./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 f4b24e32 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-?-f4b24e3 [2022-07-13 11:37:06,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:37:06,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:37:06,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:37:06,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:37:06,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:37:06,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:37:06,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:37:06,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:37:06,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:37:06,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:37:06,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:37:06,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:37:06,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:37:06,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:37:06,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:37:06,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:37:06,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:37:06,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:37:06,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:37:06,745 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:37:06,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:37:06,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:37:06,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:37:06,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:37:06,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:37:06,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:37:06,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:37:06,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:37:06,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:37:06,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:37:06,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:37:06,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:37:06,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:37:06,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:37:06,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:37:06,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:37:06,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:37:06,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:37:06,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:37:06,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:37:06,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:37:06,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:37:06,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:37:06,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:37:06,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:37:06,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:37:06,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:37:06,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:37:06,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:37:06,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:37:06,797 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:37:06,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:37:06,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:37:06,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:37:06,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:37:06,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:37:06,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:37:06,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:37:06,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:37:06,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:37:06,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:37:06,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:37:06,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:37:06,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:37:06,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:37:06,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:37:06,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:37:06,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:37:06,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:37:06,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:37:06,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:37:06,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:37:06,803 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:37:06,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:37:06,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:37:06,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cbab6fa89ec0662a3f26b65a5642d5ae526485e7fe3ba965ed5a2823e941a06 [2022-07-13 11:37:07,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:37:07,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:37:07,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:37:07,034 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:37:07,034 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:37:07,035 INFO L432 ainManager$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 [2022-07-13 11:37:07,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7060dc9/0b8e6f9e43ce40b6a4f47ce30d65298d/FLAG6ae57b7d6 [2022-07-13 11:37:07,642 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:37:07,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-1.c [2022-07-13 11:37:07,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7060dc9/0b8e6f9e43ce40b6a4f47ce30d65298d/FLAG6ae57b7d6 [2022-07-13 11:37:07,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7060dc9/0b8e6f9e43ce40b6a4f47ce30d65298d [2022-07-13 11:37:07,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:37:07,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:37:07,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:37:07,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:37:07,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:37:07,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:37:07" (1/1) ... [2022-07-13 11:37:07,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573bc4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:07, skipping insertion in model container [2022-07-13 11:37:07,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:37:07" (1/1) ... [2022-07-13 11:37:07,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:37:07,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:37:08,333 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] [2022-07-13 11:37:08,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:37:08,363 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:37:08,456 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] [2022-07-13 11:37:08,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:37:08,487 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:37:08,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08 WrapperNode [2022-07-13 11:37:08,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:37:08,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:37:08,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:37:08,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:37:08,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,584 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 788 [2022-07-13 11:37:08,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:37:08,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:37:08,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:37:08,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:37:08,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:37:08,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:37:08,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:37:08,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:37:08,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (1/1) ... [2022-07-13 11:37:08,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:37:08,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:37:08,704 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) [2022-07-13 11:37:08,714 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 [2022-07-13 11:37:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:37:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:37:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:37:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:37:08,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:37:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:37:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:37:08,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:37:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:37:08,921 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:37:08,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:37:08,946 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:37:11,648 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-13 11:37:11,648 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-13 11:37:11,649 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:37:11,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:37:11,658 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:37:11,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:37:11 BoogieIcfgContainer [2022-07-13 11:37:11,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:37:11,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:37:11,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:37:11,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:37:11,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:37:07" (1/3) ... [2022-07-13 11:37:11,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d88285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:37:11, skipping insertion in model container [2022-07-13 11:37:11,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:37:08" (2/3) ... [2022-07-13 11:37:11,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d88285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:37:11, skipping insertion in model container [2022-07-13 11:37:11,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:37:11" (3/3) ... [2022-07-13 11:37:11,668 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-1.c [2022-07-13 11:37:11,680 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:37:11,680 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:37:11,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:37:11,739 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@138f7db, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3685181d [2022-07-13 11:37:11,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:37:11,744 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) [2022-07-13 11:37:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 11:37:11,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:11,753 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] [2022-07-13 11:37:11,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:11,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:11,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1383952291, now seen corresponding path program 1 times [2022-07-13 11:37:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:11,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307822226] [2022-07-13 11:37:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:12,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:12,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307822226] [2022-07-13 11:37:12,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307822226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:12,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:12,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:12,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386044212] [2022-07-13 11:37:12,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:12,379 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) [2022-07-13 11:37:14,405 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 [] [2022-07-13 11:37:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:14,933 INFO L93 Difference]: Finished difference Result 412 states and 693 transitions. [2022-07-13 11:37:14,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:14,941 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 [2022-07-13 11:37:14,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:14,953 INFO L225 Difference]: With dead ends: 412 [2022-07-13 11:37:14,953 INFO L226 Difference]: Without dead ends: 250 [2022-07-13 11:37:14,959 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 [2022-07-13 11:37:14,963 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, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:14,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 417 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 274 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 11:37:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-13 11:37:15,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 177. [2022-07-13 11:37:15,022 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) [2022-07-13 11:37:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 283 transitions. [2022-07-13 11:37:15,025 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 283 transitions. Word has length 48 [2022-07-13 11:37:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:15,025 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 283 transitions. [2022-07-13 11:37:15,025 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) [2022-07-13 11:37:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 283 transitions. [2022-07-13 11:37:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-13 11:37:15,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:15,028 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] [2022-07-13 11:37:15,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:37:15,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -268027324, now seen corresponding path program 1 times [2022-07-13 11:37:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:15,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956689767] [2022-07-13 11:37:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:15,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:15,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956689767] [2022-07-13 11:37:15,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956689767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:15,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:15,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:15,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280434557] [2022-07-13 11:37:15,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:15,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:15,233 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) [2022-07-13 11:37:17,242 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 [] [2022-07-13 11:37:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:17,534 INFO L93 Difference]: Finished difference Result 372 states and 593 transitions. [2022-07-13 11:37:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:17,534 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 [2022-07-13 11:37:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:17,536 INFO L225 Difference]: With dead ends: 372 [2022-07-13 11:37:17,536 INFO L226 Difference]: Without dead ends: 205 [2022-07-13 11:37:17,537 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 [2022-07-13 11:37:17,538 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:17,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 448 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:37:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-13 11:37:17,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 188. [2022-07-13 11:37:17,555 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) [2022-07-13 11:37:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 302 transitions. [2022-07-13 11:37:17,556 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 302 transitions. Word has length 49 [2022-07-13 11:37:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:17,556 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 302 transitions. [2022-07-13 11:37:17,557 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) [2022-07-13 11:37:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 302 transitions. [2022-07-13 11:37:17,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 11:37:17,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:17,559 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] [2022-07-13 11:37:17,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:37:17,559 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash -446456106, now seen corresponding path program 1 times [2022-07-13 11:37:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219705449] [2022-07-13 11:37:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:17,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:17,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219705449] [2022-07-13 11:37:17,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219705449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:17,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:17,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:17,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286476016] [2022-07-13 11:37:17,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:17,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:17,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:17,738 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) [2022-07-13 11:37:19,751 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 [] [2022-07-13 11:37:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:20,110 INFO L93 Difference]: Finished difference Result 514 states and 830 transitions. [2022-07-13 11:37:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:20,111 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 [2022-07-13 11:37:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:20,113 INFO L225 Difference]: With dead ends: 514 [2022-07-13 11:37:20,113 INFO L226 Difference]: Without dead ends: 347 [2022-07-13 11:37:20,114 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 [2022-07-13 11:37:20,115 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 [2022-07-13 11:37:20,115 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] [2022-07-13 11:37:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-13 11:37:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 220. [2022-07-13 11:37:20,126 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) [2022-07-13 11:37:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 353 transitions. [2022-07-13 11:37:20,127 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 353 transitions. Word has length 62 [2022-07-13 11:37:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:20,127 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 353 transitions. [2022-07-13 11:37:20,127 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) [2022-07-13 11:37:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 353 transitions. [2022-07-13 11:37:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 11:37:20,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:20,136 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] [2022-07-13 11:37:20,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:37:20,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2018508714, now seen corresponding path program 1 times [2022-07-13 11:37:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:20,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356008510] [2022-07-13 11:37:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356008510] [2022-07-13 11:37:20,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356008510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:20,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:20,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103770416] [2022-07-13 11:37:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:20,250 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) [2022-07-13 11:37:22,257 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 [] [2022-07-13 11:37:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:22,468 INFO L93 Difference]: Finished difference Result 435 states and 694 transitions. [2022-07-13 11:37:22,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:22,469 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 [2022-07-13 11:37:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:22,470 INFO L225 Difference]: With dead ends: 435 [2022-07-13 11:37:22,470 INFO L226 Difference]: Without dead ends: 236 [2022-07-13 11:37:22,471 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 [2022-07-13 11:37:22,472 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 [2022-07-13 11:37:22,472 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] [2022-07-13 11:37:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-13 11:37:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2022-07-13 11:37:22,479 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) [2022-07-13 11:37:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 352 transitions. [2022-07-13 11:37:22,480 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 352 transitions. Word has length 63 [2022-07-13 11:37:22,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:22,480 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 352 transitions. [2022-07-13 11:37:22,480 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) [2022-07-13 11:37:22,480 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 352 transitions. [2022-07-13 11:37:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 11:37:22,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:22,482 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] [2022-07-13 11:37:22,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:37:22,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:22,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1301029102, now seen corresponding path program 1 times [2022-07-13 11:37:22,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:22,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866449668] [2022-07-13 11:37:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:22,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:22,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:22,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866449668] [2022-07-13 11:37:22,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866449668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:22,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:22,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:22,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793092050] [2022-07-13 11:37:22,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:22,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:22,586 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) [2022-07-13 11:37:24,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:37:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:24,868 INFO L93 Difference]: Finished difference Result 519 states and 825 transitions. [2022-07-13 11:37:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:24,869 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 [2022-07-13 11:37:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:24,871 INFO L225 Difference]: With dead ends: 519 [2022-07-13 11:37:24,871 INFO L226 Difference]: Without dead ends: 320 [2022-07-13 11:37:24,871 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 [2022-07-13 11:37:24,872 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 139 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:24,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 311 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:37:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-13 11:37:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 221. [2022-07-13 11:37:24,879 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) [2022-07-13 11:37:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 351 transitions. [2022-07-13 11:37:24,880 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 351 transitions. Word has length 63 [2022-07-13 11:37:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:24,880 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 351 transitions. [2022-07-13 11:37:24,880 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) [2022-07-13 11:37:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 351 transitions. [2022-07-13 11:37:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 11:37:24,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:24,882 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] [2022-07-13 11:37:24,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:37:24,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -971650395, now seen corresponding path program 1 times [2022-07-13 11:37:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:24,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34781975] [2022-07-13 11:37:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:24,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:24,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:24,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34781975] [2022-07-13 11:37:24,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34781975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:24,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:24,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240697928] [2022-07-13 11:37:24,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:24,985 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) [2022-07-13 11:37:26,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:37:26,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:26,628 INFO L93 Difference]: Finished difference Result 519 states and 821 transitions. [2022-07-13 11:37:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:26,629 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 [2022-07-13 11:37:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:26,630 INFO L225 Difference]: With dead ends: 519 [2022-07-13 11:37:26,630 INFO L226 Difference]: Without dead ends: 319 [2022-07-13 11:37:26,631 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 [2022-07-13 11:37:26,632 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 [2022-07-13 11:37:26,632 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] [2022-07-13 11:37:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-13 11:37:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 221. [2022-07-13 11:37:26,637 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) [2022-07-13 11:37:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 347 transitions. [2022-07-13 11:37:26,638 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 347 transitions. Word has length 64 [2022-07-13 11:37:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:26,639 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 347 transitions. [2022-07-13 11:37:26,639 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) [2022-07-13 11:37:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 347 transitions. [2022-07-13 11:37:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 11:37:26,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:26,640 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] [2022-07-13 11:37:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:37:26,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1857333905, now seen corresponding path program 1 times [2022-07-13 11:37:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:26,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500404341] [2022-07-13 11:37:26,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:26,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500404341] [2022-07-13 11:37:26,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500404341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:26,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:26,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687899619] [2022-07-13 11:37:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:26,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:26,727 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) [2022-07-13 11:37:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:27,472 INFO L93 Difference]: Finished difference Result 434 states and 682 transitions. [2022-07-13 11:37:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:27,474 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 [2022-07-13 11:37:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:27,476 INFO L225 Difference]: With dead ends: 434 [2022-07-13 11:37:27,476 INFO L226 Difference]: Without dead ends: 234 [2022-07-13 11:37:27,476 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 [2022-07-13 11:37:27,477 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 24 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:27,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 458 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:37:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-13 11:37:27,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-07-13 11:37:27,482 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) [2022-07-13 11:37:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 346 transitions. [2022-07-13 11:37:27,482 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 346 transitions. Word has length 64 [2022-07-13 11:37:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:27,483 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 346 transitions. [2022-07-13 11:37:27,483 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) [2022-07-13 11:37:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 346 transitions. [2022-07-13 11:37:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 11:37:27,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:27,486 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] [2022-07-13 11:37:27,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:37:27,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash 269012237, now seen corresponding path program 1 times [2022-07-13 11:37:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:27,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690736170] [2022-07-13 11:37:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:27,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:27,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690736170] [2022-07-13 11:37:27,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690736170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:27,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:27,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225155255] [2022-07-13 11:37:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:27,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:27,613 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) [2022-07-13 11:37:29,620 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 [] [2022-07-13 11:37:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:29,964 INFO L93 Difference]: Finished difference Result 519 states and 813 transitions. [2022-07-13 11:37:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:29,965 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 [2022-07-13 11:37:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:29,966 INFO L225 Difference]: With dead ends: 519 [2022-07-13 11:37:29,966 INFO L226 Difference]: Without dead ends: 319 [2022-07-13 11:37:29,967 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 [2022-07-13 11:37:29,968 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:29,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 313 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:37:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-13 11:37:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 221. [2022-07-13 11:37:29,976 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) [2022-07-13 11:37:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 342 transitions. [2022-07-13 11:37:29,980 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 342 transitions. Word has length 65 [2022-07-13 11:37:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:29,981 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 342 transitions. [2022-07-13 11:37:29,982 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) [2022-07-13 11:37:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 342 transitions. [2022-07-13 11:37:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 11:37:29,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:29,983 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] [2022-07-13 11:37:29,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:37:29,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1305412400, now seen corresponding path program 1 times [2022-07-13 11:37:29,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:29,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283000155] [2022-07-13 11:37:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:29,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:37:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:30,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283000155] [2022-07-13 11:37:30,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283000155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:30,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:30,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:30,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145029556] [2022-07-13 11:37:30,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:30,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:30,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:30,096 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) [2022-07-13 11:37:31,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:31,266 INFO L93 Difference]: Finished difference Result 519 states and 806 transitions. [2022-07-13 11:37:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:31,267 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 [2022-07-13 11:37:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:31,269 INFO L225 Difference]: With dead ends: 519 [2022-07-13 11:37:31,269 INFO L226 Difference]: Without dead ends: 317 [2022-07-13 11:37:31,269 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 [2022-07-13 11:37:31,270 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 111 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:31,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 327 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:37:31,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-13 11:37:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 246. [2022-07-13 11:37:31,275 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) [2022-07-13 11:37:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 391 transitions. [2022-07-13 11:37:31,276 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 391 transitions. Word has length 66 [2022-07-13 11:37:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:31,276 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 391 transitions. [2022-07-13 11:37:31,276 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) [2022-07-13 11:37:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 391 transitions. [2022-07-13 11:37:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 11:37:31,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:31,277 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] [2022-07-13 11:37:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:37:31,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:31,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1115483845, now seen corresponding path program 1 times [2022-07-13 11:37:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:31,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437206557] [2022-07-13 11:37:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 11:37:31,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:31,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437206557] [2022-07-13 11:37:31,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437206557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:31,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:31,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098313131] [2022-07-13 11:37:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:31,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:31,373 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) [2022-07-13 11:37:33,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:37:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:33,580 INFO L93 Difference]: Finished difference Result 511 states and 814 transitions. [2022-07-13 11:37:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:33,580 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 [2022-07-13 11:37:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:33,581 INFO L225 Difference]: With dead ends: 511 [2022-07-13 11:37:33,582 INFO L226 Difference]: Without dead ends: 286 [2022-07-13 11:37:33,582 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 [2022-07-13 11:37:33,583 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 30 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:33,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 506 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:37:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-13 11:37:33,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 268. [2022-07-13 11:37:33,588 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) [2022-07-13 11:37:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 425 transitions. [2022-07-13 11:37:33,589 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 425 transitions. Word has length 95 [2022-07-13 11:37:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:33,589 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 425 transitions. [2022-07-13 11:37:33,589 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) [2022-07-13 11:37:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 425 transitions. [2022-07-13 11:37:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 11:37:33,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:33,590 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] [2022-07-13 11:37:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:37:33,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash 464418207, now seen corresponding path program 1 times [2022-07-13 11:37:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:33,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266108830] [2022-07-13 11:37:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:33,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:37:33,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:33,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266108830] [2022-07-13 11:37:33,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266108830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:33,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:33,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:33,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143262062] [2022-07-13 11:37:33,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:33,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:33,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:33,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:33,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:33,709 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) [2022-07-13 11:37:35,723 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 [] [2022-07-13 11:37:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:35,938 INFO L93 Difference]: Finished difference Result 528 states and 840 transitions. [2022-07-13 11:37:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:35,940 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 [2022-07-13 11:37:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:35,942 INFO L225 Difference]: With dead ends: 528 [2022-07-13 11:37:35,942 INFO L226 Difference]: Without dead ends: 281 [2022-07-13 11:37:35,942 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 [2022-07-13 11:37:35,943 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 [2022-07-13 11:37:35,943 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] [2022-07-13 11:37:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-07-13 11:37:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 268. [2022-07-13 11:37:35,948 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) [2022-07-13 11:37:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 424 transitions. [2022-07-13 11:37:35,949 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 424 transitions. Word has length 95 [2022-07-13 11:37:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:35,949 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 424 transitions. [2022-07-13 11:37:35,949 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) [2022-07-13 11:37:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 424 transitions. [2022-07-13 11:37:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 11:37:35,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:35,950 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] [2022-07-13 11:37:35,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:37:35,951 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -74791869, now seen corresponding path program 1 times [2022-07-13 11:37:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:35,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918567070] [2022-07-13 11:37:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:37:36,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:36,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918567070] [2022-07-13 11:37:36,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918567070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:36,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:36,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:36,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273787679] [2022-07-13 11:37:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:36,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:36,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:36,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:36,073 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) [2022-07-13 11:37:38,080 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 [] [2022-07-13 11:37:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:38,264 INFO L93 Difference]: Finished difference Result 518 states and 826 transitions. [2022-07-13 11:37:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:38,265 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 [2022-07-13 11:37:38,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:38,266 INFO L225 Difference]: With dead ends: 518 [2022-07-13 11:37:38,266 INFO L226 Difference]: Without dead ends: 271 [2022-07-13 11:37:38,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:37:38,267 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 [2022-07-13 11:37:38,267 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] [2022-07-13 11:37:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-13 11:37:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2022-07-13 11:37:38,272 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) [2022-07-13 11:37:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 423 transitions. [2022-07-13 11:37:38,273 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 423 transitions. Word has length 96 [2022-07-13 11:37:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:38,273 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 423 transitions. [2022-07-13 11:37:38,273 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) [2022-07-13 11:37:38,273 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 423 transitions. [2022-07-13 11:37:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 11:37:38,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:38,274 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] [2022-07-13 11:37:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:37:38,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:38,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1786617495, now seen corresponding path program 1 times [2022-07-13 11:37:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:38,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206951814] [2022-07-13 11:37:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:37:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:38,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206951814] [2022-07-13 11:37:38,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206951814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:38,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:38,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513608265] [2022-07-13 11:37:38,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:38,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:38,396 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) [2022-07-13 11:37:40,403 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 [] [2022-07-13 11:37:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:40,604 INFO L93 Difference]: Finished difference Result 532 states and 844 transitions. [2022-07-13 11:37:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:40,605 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 [2022-07-13 11:37:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:40,606 INFO L225 Difference]: With dead ends: 532 [2022-07-13 11:37:40,606 INFO L226 Difference]: Without dead ends: 285 [2022-07-13 11:37:40,607 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 [2022-07-13 11:37:40,608 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 33 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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 [2022-07-13 11:37:40,608 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] [2022-07-13 11:37:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-13 11:37:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 268. [2022-07-13 11:37:40,614 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) [2022-07-13 11:37:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 422 transitions. [2022-07-13 11:37:40,615 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 422 transitions. Word has length 109 [2022-07-13 11:37:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:40,616 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 422 transitions. [2022-07-13 11:37:40,616 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) [2022-07-13 11:37:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 422 transitions. [2022-07-13 11:37:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 11:37:40,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:40,617 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] [2022-07-13 11:37:40,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:37:40,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1803417690, now seen corresponding path program 1 times [2022-07-13 11:37:40,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:40,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528291539] [2022-07-13 11:37:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:40,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:37:40,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:40,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528291539] [2022-07-13 11:37:40,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528291539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:40,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:40,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:40,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653566315] [2022-07-13 11:37:40,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:40,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:40,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:40,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:40,724 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) [2022-07-13 11:37:42,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:37:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:42,595 INFO L93 Difference]: Finished difference Result 586 states and 915 transitions. [2022-07-13 11:37:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:42,595 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 [2022-07-13 11:37:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:42,597 INFO L225 Difference]: With dead ends: 586 [2022-07-13 11:37:42,597 INFO L226 Difference]: Without dead ends: 339 [2022-07-13 11:37:42,597 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 [2022-07-13 11:37:42,598 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 140 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:42,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 331 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 11:37:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-13 11:37:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 268. [2022-07-13 11:37:42,604 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) [2022-07-13 11:37:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 418 transitions. [2022-07-13 11:37:42,605 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 418 transitions. Word has length 110 [2022-07-13 11:37:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:42,606 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 418 transitions. [2022-07-13 11:37:42,606 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) [2022-07-13 11:37:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 418 transitions. [2022-07-13 11:37:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 11:37:42,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:42,607 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] [2022-07-13 11:37:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:37:42,608 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1948427051, now seen corresponding path program 1 times [2022-07-13 11:37:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:42,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189588901] [2022-07-13 11:37:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:37:42,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189588901] [2022-07-13 11:37:42,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189588901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:42,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:42,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370968929] [2022-07-13 11:37:42,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:42,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:42,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:42,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:42,721 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) [2022-07-13 11:37:44,735 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 [] [2022-07-13 11:37:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:45,057 INFO L93 Difference]: Finished difference Result 586 states and 907 transitions. [2022-07-13 11:37:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:45,058 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 [2022-07-13 11:37:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:45,059 INFO L225 Difference]: With dead ends: 586 [2022-07-13 11:37:45,059 INFO L226 Difference]: Without dead ends: 339 [2022-07-13 11:37:45,060 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 [2022-07-13 11:37:45,061 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:45,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 331 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 257 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:37:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-13 11:37:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 268. [2022-07-13 11:37:45,066 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) [2022-07-13 11:37:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 414 transitions. [2022-07-13 11:37:45,067 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 414 transitions. Word has length 112 [2022-07-13 11:37:45,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:45,068 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 414 transitions. [2022-07-13 11:37:45,068 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) [2022-07-13 11:37:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 414 transitions. [2022-07-13 11:37:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 11:37:45,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:45,069 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] [2022-07-13 11:37:45,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:37:45,070 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1315157961, now seen corresponding path program 1 times [2022-07-13 11:37:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:45,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863465818] [2022-07-13 11:37:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:45,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 11:37:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:45,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863465818] [2022-07-13 11:37:45,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863465818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:45,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:45,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205965175] [2022-07-13 11:37:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:45,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:45,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:45,186 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) [2022-07-13 11:37:46,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:37:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:46,498 INFO L93 Difference]: Finished difference Result 522 states and 813 transitions. [2022-07-13 11:37:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:46,499 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 [2022-07-13 11:37:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:46,500 INFO L225 Difference]: With dead ends: 522 [2022-07-13 11:37:46,500 INFO L226 Difference]: Without dead ends: 275 [2022-07-13 11:37:46,501 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 [2022-07-13 11:37:46,501 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 26 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:46,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 492 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:37:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-13 11:37:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 268. [2022-07-13 11:37:46,507 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) [2022-07-13 11:37:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 413 transitions. [2022-07-13 11:37:46,508 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 413 transitions. Word has length 113 [2022-07-13 11:37:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:46,508 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 413 transitions. [2022-07-13 11:37:46,508 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) [2022-07-13 11:37:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 413 transitions. [2022-07-13 11:37:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 11:37:46,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:46,509 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] [2022-07-13 11:37:46,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:37:46,510 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1545905064, now seen corresponding path program 1 times [2022-07-13 11:37:46,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:46,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747613616] [2022-07-13 11:37:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:37:46,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:46,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747613616] [2022-07-13 11:37:46,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747613616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:46,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:46,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730857244] [2022-07-13 11:37:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:46,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:46,611 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) [2022-07-13 11:37:48,619 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 [] [2022-07-13 11:37:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:48,947 INFO L93 Difference]: Finished difference Result 624 states and 964 transitions. [2022-07-13 11:37:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:48,948 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 [2022-07-13 11:37:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:48,950 INFO L225 Difference]: With dead ends: 624 [2022-07-13 11:37:48,950 INFO L226 Difference]: Without dead ends: 377 [2022-07-13 11:37:48,950 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 [2022-07-13 11:37:48,951 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 [2022-07-13 11:37:48,951 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] [2022-07-13 11:37:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-13 11:37:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 300. [2022-07-13 11:37:48,958 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) [2022-07-13 11:37:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 464 transitions. [2022-07-13 11:37:48,959 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 464 transitions. Word has length 117 [2022-07-13 11:37:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:48,959 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 464 transitions. [2022-07-13 11:37:48,959 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) [2022-07-13 11:37:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 464 transitions. [2022-07-13 11:37:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 11:37:48,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:48,961 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] [2022-07-13 11:37:48,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:37:48,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:48,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2064254214, now seen corresponding path program 1 times [2022-07-13 11:37:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:48,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731085913] [2022-07-13 11:37:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:37:49,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:49,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731085913] [2022-07-13 11:37:49,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731085913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:49,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:49,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:49,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070431613] [2022-07-13 11:37:49,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:49,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:49,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:49,086 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) [2022-07-13 11:37:51,094 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 [] [2022-07-13 11:37:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:51,433 INFO L93 Difference]: Finished difference Result 694 states and 1072 transitions. [2022-07-13 11:37:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:51,433 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 [2022-07-13 11:37:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:51,434 INFO L225 Difference]: With dead ends: 694 [2022-07-13 11:37:51,435 INFO L226 Difference]: Without dead ends: 415 [2022-07-13 11:37:51,435 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 [2022-07-13 11:37:51,436 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 [2022-07-13 11:37:51,436 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] [2022-07-13 11:37:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-13 11:37:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 343. [2022-07-13 11:37:51,443 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) [2022-07-13 11:37:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 534 transitions. [2022-07-13 11:37:51,444 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 534 transitions. Word has length 128 [2022-07-13 11:37:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:51,445 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 534 transitions. [2022-07-13 11:37:51,445 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) [2022-07-13 11:37:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 534 transitions. [2022-07-13 11:37:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 11:37:51,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:51,447 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] [2022-07-13 11:37:51,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:37:51,447 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash 187771396, now seen corresponding path program 1 times [2022-07-13 11:37:51,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:51,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502448481] [2022-07-13 11:37:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:51,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:37:51,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:51,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502448481] [2022-07-13 11:37:51,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502448481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:51,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:51,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:37:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383350622] [2022-07-13 11:37:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:51,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:37:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:37:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:37:51,550 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) [2022-07-13 11:37:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:51,578 INFO L93 Difference]: Finished difference Result 981 states and 1546 transitions. [2022-07-13 11:37:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:37:51,578 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 [2022-07-13 11:37:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:51,581 INFO L225 Difference]: With dead ends: 981 [2022-07-13 11:37:51,581 INFO L226 Difference]: Without dead ends: 659 [2022-07-13 11:37:51,582 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 [2022-07-13 11:37:51,586 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 [2022-07-13 11:37:51,587 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] [2022-07-13 11:37:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-13 11:37:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-13 11:37:51,611 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) [2022-07-13 11:37:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1031 transitions. [2022-07-13 11:37:51,612 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1031 transitions. Word has length 128 [2022-07-13 11:37:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:51,613 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1031 transitions. [2022-07-13 11:37:51,613 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) [2022-07-13 11:37:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1031 transitions. [2022-07-13 11:37:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 11:37:51,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:51,615 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] [2022-07-13 11:37:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:37:51,615 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1081257734, now seen corresponding path program 1 times [2022-07-13 11:37:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523209688] [2022-07-13 11:37:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:37:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:51,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523209688] [2022-07-13 11:37:51,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523209688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:51,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:51,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:37:51,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687769147] [2022-07-13 11:37:51,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:51,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:37:51,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:37:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:37:51,731 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) [2022-07-13 11:37:51,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:51,759 INFO L93 Difference]: Finished difference Result 1572 states and 2471 transitions. [2022-07-13 11:37:51,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:37:51,760 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 [2022-07-13 11:37:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:51,763 INFO L225 Difference]: With dead ends: 1572 [2022-07-13 11:37:51,763 INFO L226 Difference]: Without dead ends: 934 [2022-07-13 11:37:51,764 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 [2022-07-13 11:37:51,766 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 [2022-07-13 11:37:51,766 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] [2022-07-13 11:37:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-07-13 11:37:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 934. [2022-07-13 11:37:51,786 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) [2022-07-13 11:37:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1459 transitions. [2022-07-13 11:37:51,789 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1459 transitions. Word has length 128 [2022-07-13 11:37:51,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:51,789 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1459 transitions. [2022-07-13 11:37:51,789 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) [2022-07-13 11:37:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1459 transitions. [2022-07-13 11:37:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 11:37:51,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:51,791 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] [2022-07-13 11:37:51,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:37:51,792 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 494981512, now seen corresponding path program 1 times [2022-07-13 11:37:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:51,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257332443] [2022-07-13 11:37:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 11:37:51,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257332443] [2022-07-13 11:37:51,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257332443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:51,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:51,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:37:51,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431654666] [2022-07-13 11:37:51,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:51,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:37:51,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:51,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:37:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:37:51,920 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) [2022-07-13 11:37:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:51,945 INFO L93 Difference]: Finished difference Result 1874 states and 2930 transitions. [2022-07-13 11:37:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:37:51,945 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 [2022-07-13 11:37:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:51,949 INFO L225 Difference]: With dead ends: 1874 [2022-07-13 11:37:51,949 INFO L226 Difference]: Without dead ends: 961 [2022-07-13 11:37:51,950 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 [2022-07-13 11:37:51,951 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 [2022-07-13 11:37:51,951 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] [2022-07-13 11:37:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-07-13 11:37:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2022-07-13 11:37:51,968 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) [2022-07-13 11:37:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1494 transitions. [2022-07-13 11:37:51,971 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1494 transitions. Word has length 128 [2022-07-13 11:37:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:51,971 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1494 transitions. [2022-07-13 11:37:51,971 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) [2022-07-13 11:37:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1494 transitions. [2022-07-13 11:37:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 11:37:51,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:51,973 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] [2022-07-13 11:37:51,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:37:51,974 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:51,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1646878966, now seen corresponding path program 1 times [2022-07-13 11:37:51,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:51,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728967031] [2022-07-13 11:37:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-13 11:37:52,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:52,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728967031] [2022-07-13 11:37:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728967031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:52,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:52,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:37:52,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948486544] [2022-07-13 11:37:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:37:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:37:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:37:52,055 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) [2022-07-13 11:37:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:52,075 INFO L93 Difference]: Finished difference Result 1903 states and 2966 transitions. [2022-07-13 11:37:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:37:52,077 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 [2022-07-13 11:37:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:52,080 INFO L225 Difference]: With dead ends: 1903 [2022-07-13 11:37:52,080 INFO L226 Difference]: Without dead ends: 963 [2022-07-13 11:37:52,082 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 [2022-07-13 11:37:52,082 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 [2022-07-13 11:37:52,083 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] [2022-07-13 11:37:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-13 11:37:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-07-13 11:37:52,100 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) [2022-07-13 11:37:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1496 transitions. [2022-07-13 11:37:52,102 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1496 transitions. Word has length 128 [2022-07-13 11:37:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:52,102 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1496 transitions. [2022-07-13 11:37:52,103 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) [2022-07-13 11:37:52,103 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1496 transitions. [2022-07-13 11:37:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-13 11:37:52,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:52,106 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] [2022-07-13 11:37:52,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:37:52,106 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:52,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash 331983923, now seen corresponding path program 1 times [2022-07-13 11:37:52,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:52,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386498821] [2022-07-13 11:37:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-13 11:37:52,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:52,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386498821] [2022-07-13 11:37:52,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386498821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:52,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:52,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:52,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800418225] [2022-07-13 11:37:52,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:52,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:52,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:52,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:52,239 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) [2022-07-13 11:37:53,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:37:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:53,921 INFO L93 Difference]: Finished difference Result 2008 states and 3100 transitions. [2022-07-13 11:37:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:53,922 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 [2022-07-13 11:37:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:53,925 INFO L225 Difference]: With dead ends: 2008 [2022-07-13 11:37:53,925 INFO L226 Difference]: Without dead ends: 1068 [2022-07-13 11:37:53,927 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 [2022-07-13 11:37:53,927 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 80 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:53,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 617 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 11:37:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-07-13 11:37:53,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 963. [2022-07-13 11:37:53,951 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) [2022-07-13 11:37:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1494 transitions. [2022-07-13 11:37:53,953 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1494 transitions. Word has length 208 [2022-07-13 11:37:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:53,953 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1494 transitions. [2022-07-13 11:37:53,956 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) [2022-07-13 11:37:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1494 transitions. [2022-07-13 11:37:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-13 11:37:53,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:53,958 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] [2022-07-13 11:37:53,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 11:37:53,958 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:53,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:53,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1176878834, now seen corresponding path program 1 times [2022-07-13 11:37:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:53,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956150371] [2022-07-13 11:37:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-13 11:37:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956150371] [2022-07-13 11:37:54,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956150371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:54,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:54,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:54,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137745201] [2022-07-13 11:37:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:54,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:54,103 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) [2022-07-13 11:37:55,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:55,115 INFO L93 Difference]: Finished difference Result 2107 states and 3231 transitions. [2022-07-13 11:37:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:55,116 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 [2022-07-13 11:37:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:55,119 INFO L225 Difference]: With dead ends: 2107 [2022-07-13 11:37:55,120 INFO L226 Difference]: Without dead ends: 1167 [2022-07-13 11:37:55,121 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 [2022-07-13 11:37:55,121 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 109 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:55,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 313 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:37:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2022-07-13 11:37:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 963. [2022-07-13 11:37:55,140 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) [2022-07-13 11:37:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1486 transitions. [2022-07-13 11:37:55,143 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1486 transitions. Word has length 209 [2022-07-13 11:37:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:55,143 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1486 transitions. [2022-07-13 11:37:55,143 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) [2022-07-13 11:37:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1486 transitions. [2022-07-13 11:37:55,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-13 11:37:55,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:55,146 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] [2022-07-13 11:37:55,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:37:55,147 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1702915551, now seen corresponding path program 1 times [2022-07-13 11:37:55,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:55,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355545208] [2022-07-13 11:37:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 11:37:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:55,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355545208] [2022-07-13 11:37:55,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355545208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:55,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:55,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:55,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137714404] [2022-07-13 11:37:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:55,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:55,281 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) [2022-07-13 11:37:57,287 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 [] [2022-07-13 11:37:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:37:57,627 INFO L93 Difference]: Finished difference Result 2104 states and 3212 transitions. [2022-07-13 11:37:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:37:57,628 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 [2022-07-13 11:37:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:37:57,632 INFO L225 Difference]: With dead ends: 2104 [2022-07-13 11:37:57,632 INFO L226 Difference]: Without dead ends: 1164 [2022-07-13 11:37:57,633 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 [2022-07-13 11:37:57,633 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 130 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 61 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:37:57,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 315 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 255 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:37:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-07-13 11:37:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 963. [2022-07-13 11:37:57,652 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) [2022-07-13 11:37:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1475 transitions. [2022-07-13 11:37:57,655 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1475 transitions. Word has length 222 [2022-07-13 11:37:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:37:57,655 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1475 transitions. [2022-07-13 11:37:57,655 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) [2022-07-13 11:37:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1475 transitions. [2022-07-13 11:37:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-13 11:37:57,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:37:57,658 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] [2022-07-13 11:37:57,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:37:57,659 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:37:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:37:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash 553077487, now seen corresponding path program 1 times [2022-07-13 11:37:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:37:57,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617064430] [2022-07-13 11:37:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:37:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:37:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:37:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-13 11:37:57,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:37:57,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617064430] [2022-07-13 11:37:57,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617064430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:37:57,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:37:57,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:37:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238572301] [2022-07-13 11:37:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:37:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:37:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:37:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:37:57,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:37:57,813 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) [2022-07-13 11:37:59,828 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 [] [2022-07-13 11:38:00,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:00,021 INFO L93 Difference]: Finished difference Result 1939 states and 2968 transitions. [2022-07-13 11:38:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:00,023 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 [2022-07-13 11:38:00,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:00,027 INFO L225 Difference]: With dead ends: 1939 [2022-07-13 11:38:00,027 INFO L226 Difference]: Without dead ends: 999 [2022-07-13 11:38:00,028 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 [2022-07-13 11:38:00,029 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 18 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:00,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 533 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 142 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:38:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-07-13 11:38:00,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 963. [2022-07-13 11:38:00,064 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) [2022-07-13 11:38:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1472 transitions. [2022-07-13 11:38:00,066 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1472 transitions. Word has length 226 [2022-07-13 11:38:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:00,067 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1472 transitions. [2022-07-13 11:38:00,067 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) [2022-07-13 11:38:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1472 transitions. [2022-07-13 11:38:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-13 11:38:00,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:00,071 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] [2022-07-13 11:38:00,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 11:38:00,071 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash -899643668, now seen corresponding path program 1 times [2022-07-13 11:38:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:00,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616877208] [2022-07-13 11:38:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 11:38:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:00,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616877208] [2022-07-13 11:38:00,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616877208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:00,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:00,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249213541] [2022-07-13 11:38:00,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:00,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:00,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:00,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:00,213 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) [2022-07-13 11:38:01,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:02,074 INFO L93 Difference]: Finished difference Result 2074 states and 3145 transitions. [2022-07-13 11:38:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:02,075 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 [2022-07-13 11:38:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:02,080 INFO L225 Difference]: With dead ends: 2074 [2022-07-13 11:38:02,080 INFO L226 Difference]: Without dead ends: 1134 [2022-07-13 11:38:02,081 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 [2022-07-13 11:38:02,082 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 125 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:02,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 335 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 11:38:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-07-13 11:38:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 963. [2022-07-13 11:38:02,101 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) [2022-07-13 11:38:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1458 transitions. [2022-07-13 11:38:02,103 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1458 transitions. Word has length 227 [2022-07-13 11:38:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:02,104 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1458 transitions. [2022-07-13 11:38:02,104 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) [2022-07-13 11:38:02,104 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1458 transitions. [2022-07-13 11:38:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-13 11:38:02,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:02,107 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] [2022-07-13 11:38:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 11:38:02,108 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2004826738, now seen corresponding path program 1 times [2022-07-13 11:38:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:02,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939681606] [2022-07-13 11:38:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 290 proven. 34 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-13 11:38:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:02,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939681606] [2022-07-13 11:38:02,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939681606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:02,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284179329] [2022-07-13 11:38:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:02,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:38:02,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:02,272 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) [2022-07-13 11:38:02,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:38:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:02,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:38:02,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:38:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-13 11:38:03,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:38:03,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284179329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:03,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:38:03,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 11:38:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567857442] [2022-07-13 11:38:03,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:38:03,095 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) [2022-07-13 11:38:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:03,126 INFO L93 Difference]: Finished difference Result 1285 states and 1953 transitions. [2022-07-13 11:38:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:03,127 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 [2022-07-13 11:38:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:03,131 INFO L225 Difference]: With dead ends: 1285 [2022-07-13 11:38:03,131 INFO L226 Difference]: Without dead ends: 1283 [2022-07-13 11:38:03,132 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 [2022-07-13 11:38:03,132 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 [2022-07-13 11:38:03,132 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] [2022-07-13 11:38:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-07-13 11:38:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2022-07-13 11:38:03,156 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) [2022-07-13 11:38:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1951 transitions. [2022-07-13 11:38:03,158 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1951 transitions. Word has length 230 [2022-07-13 11:38:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:03,159 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1951 transitions. [2022-07-13 11:38:03,159 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) [2022-07-13 11:38:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1951 transitions. [2022-07-13 11:38:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-13 11:38:03,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:03,162 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] [2022-07-13 11:38:03,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 11:38:03,375 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 [2022-07-13 11:38:03,375 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash -270358069, now seen corresponding path program 1 times [2022-07-13 11:38:03,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:03,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980206128] [2022-07-13 11:38:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:03,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 443 proven. 34 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-13 11:38:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:03,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980206128] [2022-07-13 11:38:03,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980206128] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:03,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573150327] [2022-07-13 11:38:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:03,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:38:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:03,569 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) [2022-07-13 11:38:03,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:38:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:04,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 11:38:04,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:38:04,451 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:38:04,452 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 [2022-07-13 11:38:04,499 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:38:04,499 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 [2022-07-13 11:38:04,508 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 [2022-07-13 11:38:04,531 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:38:04,531 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 [2022-07-13 11:38:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 471 proven. 48 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-13 11:38:04,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:38:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-07-13 11:38:04,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573150327] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:04,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:38:04,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2022-07-13 11:38:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711829875] [2022-07-13 11:38:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:04,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:38:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:38:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:38:04,687 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) [2022-07-13 11:38:07,455 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 [] [2022-07-13 11:38:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:07,818 INFO L93 Difference]: Finished difference Result 3058 states and 4640 transitions. [2022-07-13 11:38:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:07,819 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 [2022-07-13 11:38:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:07,825 INFO L225 Difference]: With dead ends: 3058 [2022-07-13 11:38:07,825 INFO L226 Difference]: Without dead ends: 1798 [2022-07-13 11:38:07,827 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 [2022-07-13 11:38:07,827 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 129 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:07,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 441 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 312 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 11:38:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2022-07-13 11:38:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1571. [2022-07-13 11:38:07,861 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) [2022-07-13 11:38:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2407 transitions. [2022-07-13 11:38:07,864 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2407 transitions. Word has length 303 [2022-07-13 11:38:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:07,864 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2407 transitions. [2022-07-13 11:38:07,864 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) [2022-07-13 11:38:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2407 transitions. [2022-07-13 11:38:07,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-07-13 11:38:07,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:07,868 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] [2022-07-13 11:38:07,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:38:08,083 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 [2022-07-13 11:38:08,083 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash -273851134, now seen corresponding path program 1 times [2022-07-13 11:38:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:08,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713720809] [2022-07-13 11:38:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-07-13 11:38:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:08,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713720809] [2022-07-13 11:38:08,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713720809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:08,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:08,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:08,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783809955] [2022-07-13 11:38:08,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:08,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:08,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:08,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:08,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:08,264 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) [2022-07-13 11:38:10,279 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 [] [2022-07-13 11:38:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:10,590 INFO L93 Difference]: Finished difference Result 3516 states and 5359 transitions. [2022-07-13 11:38:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:10,591 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 [2022-07-13 11:38:10,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:10,597 INFO L225 Difference]: With dead ends: 3516 [2022-07-13 11:38:10,597 INFO L226 Difference]: Without dead ends: 1968 [2022-07-13 11:38:10,599 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 [2022-07-13 11:38:10,599 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 102 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:10,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 339 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 11:38:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2022-07-13 11:38:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1719. [2022-07-13 11:38:10,645 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) [2022-07-13 11:38:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2632 transitions. [2022-07-13 11:38:10,648 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2632 transitions. Word has length 315 [2022-07-13 11:38:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:10,648 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2632 transitions. [2022-07-13 11:38:10,648 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) [2022-07-13 11:38:10,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2632 transitions. [2022-07-13 11:38:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-13 11:38:10,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:10,652 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] [2022-07-13 11:38:10,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 11:38:10,653 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash 157640067, now seen corresponding path program 1 times [2022-07-13 11:38:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:10,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188293189] [2022-07-13 11:38:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 895 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-07-13 11:38:10,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:10,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188293189] [2022-07-13 11:38:10,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188293189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:10,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:10,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346226806] [2022-07-13 11:38:10,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:10,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:10,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:10,812 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) [2022-07-13 11:38:12,827 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 [] [2022-07-13 11:38:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:13,145 INFO L93 Difference]: Finished difference Result 3644 states and 5545 transitions. [2022-07-13 11:38:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:13,146 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 [2022-07-13 11:38:13,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:13,151 INFO L225 Difference]: With dead ends: 3644 [2022-07-13 11:38:13,151 INFO L226 Difference]: Without dead ends: 1948 [2022-07-13 11:38:13,156 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 [2022-07-13 11:38:13,156 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 [2022-07-13 11:38:13,157 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] [2022-07-13 11:38:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-07-13 11:38:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1719. [2022-07-13 11:38:13,194 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) [2022-07-13 11:38:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2617 transitions. [2022-07-13 11:38:13,197 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2617 transitions. Word has length 316 [2022-07-13 11:38:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:13,198 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2617 transitions. [2022-07-13 11:38:13,198 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) [2022-07-13 11:38:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2617 transitions. [2022-07-13 11:38:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-07-13 11:38:13,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:13,202 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] [2022-07-13 11:38:13,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 11:38:13,203 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1517469961, now seen corresponding path program 1 times [2022-07-13 11:38:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:13,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240417505] [2022-07-13 11:38:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:13,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-07-13 11:38:13,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:13,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240417505] [2022-07-13 11:38:13,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240417505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:13,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:13,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 11:38:13,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525323281] [2022-07-13 11:38:13,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:13,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:38:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:38:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:38:13,621 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) [2022-07-13 11:38:15,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:17,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:18,575 INFO L93 Difference]: Finished difference Result 5138 states and 7849 transitions. [2022-07-13 11:38:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 11:38:18,576 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 [2022-07-13 11:38:18,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:18,586 INFO L225 Difference]: With dead ends: 5138 [2022-07-13 11:38:18,587 INFO L226 Difference]: Without dead ends: 3442 [2022-07-13 11:38:18,589 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 [2022-07-13 11:38:18,589 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, 4.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:18,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1103 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 797 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-07-13 11:38:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-07-13 11:38:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3239. [2022-07-13 11:38:18,662 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) [2022-07-13 11:38:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4998 transitions. [2022-07-13 11:38:18,667 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4998 transitions. Word has length 325 [2022-07-13 11:38:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:18,667 INFO L495 AbstractCegarLoop]: Abstraction has 3239 states and 4998 transitions. [2022-07-13 11:38:18,668 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) [2022-07-13 11:38:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4998 transitions. [2022-07-13 11:38:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-13 11:38:18,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:18,674 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] [2022-07-13 11:38:18,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 11:38:18,675 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1066276522, now seen corresponding path program 1 times [2022-07-13 11:38:18,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:18,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401429870] [2022-07-13 11:38:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:18,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-13 11:38:18,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:18,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401429870] [2022-07-13 11:38:18,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401429870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:18,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:18,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920739953] [2022-07-13 11:38:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:18,856 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) [2022-07-13 11:38:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:20,112 INFO L93 Difference]: Finished difference Result 7001 states and 10771 transitions. [2022-07-13 11:38:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:20,113 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 [2022-07-13 11:38:20,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:20,121 INFO L225 Difference]: With dead ends: 7001 [2022-07-13 11:38:20,121 INFO L226 Difference]: Without dead ends: 3761 [2022-07-13 11:38:20,125 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 [2022-07-13 11:38:20,125 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 52 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:20,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 590 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 11:38:20,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2022-07-13 11:38:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3527. [2022-07-13 11:38:20,224 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) [2022-07-13 11:38:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5454 transitions. [2022-07-13 11:38:20,230 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5454 transitions. Word has length 326 [2022-07-13 11:38:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:20,230 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5454 transitions. [2022-07-13 11:38:20,230 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) [2022-07-13 11:38:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5454 transitions. [2022-07-13 11:38:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-07-13 11:38:20,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:20,237 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] [2022-07-13 11:38:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 11:38:20,237 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:20,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash -723493453, now seen corresponding path program 1 times [2022-07-13 11:38:20,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:20,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830096070] [2022-07-13 11:38:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-13 11:38:20,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:20,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830096070] [2022-07-13 11:38:20,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830096070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:20,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:20,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88656961] [2022-07-13 11:38:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:20,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:20,419 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) [2022-07-13 11:38:22,431 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 [] [2022-07-13 11:38:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:22,768 INFO L93 Difference]: Finished difference Result 7138 states and 11022 transitions. [2022-07-13 11:38:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:22,769 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 [2022-07-13 11:38:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:22,780 INFO L225 Difference]: With dead ends: 7138 [2022-07-13 11:38:22,780 INFO L226 Difference]: Without dead ends: 3634 [2022-07-13 11:38:22,786 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 [2022-07-13 11:38:22,787 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 [2022-07-13 11:38:22,787 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] [2022-07-13 11:38:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-07-13 11:38:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3527. [2022-07-13 11:38:22,864 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) [2022-07-13 11:38:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5451 transitions. [2022-07-13 11:38:22,869 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5451 transitions. Word has length 338 [2022-07-13 11:38:22,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:22,869 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5451 transitions. [2022-07-13 11:38:22,869 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) [2022-07-13 11:38:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5451 transitions. [2022-07-13 11:38:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-07-13 11:38:22,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:22,876 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] [2022-07-13 11:38:22,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 11:38:22,876 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1362236269, now seen corresponding path program 1 times [2022-07-13 11:38:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:22,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954454355] [2022-07-13 11:38:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-13 11:38:23,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:23,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954454355] [2022-07-13 11:38:23,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954454355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:23,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:23,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827793155] [2022-07-13 11:38:23,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:23,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:23,052 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) [2022-07-13 11:38:25,067 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 [] [2022-07-13 11:38:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:25,429 INFO L93 Difference]: Finished difference Result 7463 states and 11460 transitions. [2022-07-13 11:38:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:25,430 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 [2022-07-13 11:38:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:25,437 INFO L225 Difference]: With dead ends: 7463 [2022-07-13 11:38:25,437 INFO L226 Difference]: Without dead ends: 3959 [2022-07-13 11:38:25,440 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 [2022-07-13 11:38:25,440 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 [2022-07-13 11:38:25,440 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] [2022-07-13 11:38:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2022-07-13 11:38:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3527. [2022-07-13 11:38:25,515 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) [2022-07-13 11:38:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 5388 transitions. [2022-07-13 11:38:25,535 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 5388 transitions. Word has length 339 [2022-07-13 11:38:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:25,535 INFO L495 AbstractCegarLoop]: Abstraction has 3527 states and 5388 transitions. [2022-07-13 11:38:25,535 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) [2022-07-13 11:38:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 5388 transitions. [2022-07-13 11:38:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-07-13 11:38:25,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:25,542 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] [2022-07-13 11:38:25,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 11:38:25,542 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:25,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1244495786, now seen corresponding path program 1 times [2022-07-13 11:38:25,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:25,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646662712] [2022-07-13 11:38:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:25,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-13 11:38:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:25,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646662712] [2022-07-13 11:38:25,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646662712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:25,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:25,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16357429] [2022-07-13 11:38:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:25,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:25,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:25,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:25,694 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) [2022-07-13 11:38:27,702 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 [] [2022-07-13 11:38:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:28,045 INFO L93 Difference]: Finished difference Result 7775 states and 11814 transitions. [2022-07-13 11:38:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:28,045 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 [2022-07-13 11:38:28,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:28,052 INFO L225 Difference]: With dead ends: 7775 [2022-07-13 11:38:28,053 INFO L226 Difference]: Without dead ends: 4271 [2022-07-13 11:38:28,056 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 [2022-07-13 11:38:28,057 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 [2022-07-13 11:38:28,058 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] [2022-07-13 11:38:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2022-07-13 11:38:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 3751. [2022-07-13 11:38:28,159 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) [2022-07-13 11:38:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5669 transitions. [2022-07-13 11:38:28,165 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5669 transitions. Word has length 341 [2022-07-13 11:38:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:28,165 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5669 transitions. [2022-07-13 11:38:28,165 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) [2022-07-13 11:38:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5669 transitions. [2022-07-13 11:38:28,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-07-13 11:38:28,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:28,175 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] [2022-07-13 11:38:28,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 11:38:28,175 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:28,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1779158444, now seen corresponding path program 1 times [2022-07-13 11:38:28,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:28,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708589947] [2022-07-13 11:38:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:28,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-13 11:38:28,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:28,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708589947] [2022-07-13 11:38:28,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708589947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:28,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:28,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:28,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989845540] [2022-07-13 11:38:28,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:28,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:28,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:28,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:28,363 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) [2022-07-13 11:38:30,372 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 [] [2022-07-13 11:38:30,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:30,643 INFO L93 Difference]: Finished difference Result 7697 states and 11609 transitions. [2022-07-13 11:38:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:30,644 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 [2022-07-13 11:38:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:30,668 INFO L225 Difference]: With dead ends: 7697 [2022-07-13 11:38:30,668 INFO L226 Difference]: Without dead ends: 3969 [2022-07-13 11:38:30,671 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 [2022-07-13 11:38:30,672 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, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:30,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 582 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:38:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2022-07-13 11:38:30,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3751. [2022-07-13 11:38:30,746 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) [2022-07-13 11:38:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5661 transitions. [2022-07-13 11:38:30,751 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5661 transitions. Word has length 341 [2022-07-13 11:38:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:30,752 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5661 transitions. [2022-07-13 11:38:30,752 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) [2022-07-13 11:38:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5661 transitions. [2022-07-13 11:38:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-13 11:38:30,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:30,761 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] [2022-07-13 11:38:30,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 11:38:30,762 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -604197104, now seen corresponding path program 1 times [2022-07-13 11:38:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:30,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083748891] [2022-07-13 11:38:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:30,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-07-13 11:38:30,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083748891] [2022-07-13 11:38:30,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083748891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:30,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:30,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:30,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304662514] [2022-07-13 11:38:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:30,945 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) [2022-07-13 11:38:32,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:32,616 INFO L93 Difference]: Finished difference Result 7556 states and 11391 transitions. [2022-07-13 11:38:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:32,616 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 [2022-07-13 11:38:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:32,623 INFO L225 Difference]: With dead ends: 7556 [2022-07-13 11:38:32,623 INFO L226 Difference]: Without dead ends: 3828 [2022-07-13 11:38:32,626 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 [2022-07-13 11:38:32,626 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 59 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:32,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 577 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 11:38:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2022-07-13 11:38:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3751. [2022-07-13 11:38:32,720 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) [2022-07-13 11:38:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5658 transitions. [2022-07-13 11:38:32,726 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5658 transitions. Word has length 342 [2022-07-13 11:38:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:32,726 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5658 transitions. [2022-07-13 11:38:32,726 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) [2022-07-13 11:38:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5658 transitions. [2022-07-13 11:38:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-07-13 11:38:32,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:32,734 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] [2022-07-13 11:38:32,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 11:38:32,734 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash -871793655, now seen corresponding path program 1 times [2022-07-13 11:38:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:32,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477562378] [2022-07-13 11:38:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:32,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-13 11:38:32,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:32,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477562378] [2022-07-13 11:38:32,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477562378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:32,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:32,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165698973] [2022-07-13 11:38:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:32,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:32,938 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) [2022-07-13 11:38:34,951 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 [] [2022-07-13 11:38:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:35,191 INFO L93 Difference]: Finished difference Result 7633 states and 11483 transitions. [2022-07-13 11:38:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:35,192 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 [2022-07-13 11:38:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:35,198 INFO L225 Difference]: With dead ends: 7633 [2022-07-13 11:38:35,198 INFO L226 Difference]: Without dead ends: 3905 [2022-07-13 11:38:35,201 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 [2022-07-13 11:38:35,202 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 44 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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 [2022-07-13 11:38:35,202 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] [2022-07-13 11:38:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2022-07-13 11:38:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3751. [2022-07-13 11:38:35,314 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) [2022-07-13 11:38:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5650 transitions. [2022-07-13 11:38:35,319 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5650 transitions. Word has length 345 [2022-07-13 11:38:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:35,319 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5650 transitions. [2022-07-13 11:38:35,320 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) [2022-07-13 11:38:35,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5650 transitions. [2022-07-13 11:38:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-13 11:38:35,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:35,326 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] [2022-07-13 11:38:35,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-13 11:38:35,326 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:35,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:35,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1584809309, now seen corresponding path program 1 times [2022-07-13 11:38:35,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:35,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422956716] [2022-07-13 11:38:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:35,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 609 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-07-13 11:38:35,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:35,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422956716] [2022-07-13 11:38:35,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422956716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:35,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:35,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:35,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835824590] [2022-07-13 11:38:35,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:35,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:35,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:35,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:35,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:35,475 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) [2022-07-13 11:38:37,480 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 [] [2022-07-13 11:38:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:37,736 INFO L93 Difference]: Finished difference Result 7556 states and 11369 transitions. [2022-07-13 11:38:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:37,737 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 [2022-07-13 11:38:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:37,741 INFO L225 Difference]: With dead ends: 7556 [2022-07-13 11:38:37,741 INFO L226 Difference]: Without dead ends: 3828 [2022-07-13 11:38:37,745 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 [2022-07-13 11:38:37,745 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 [2022-07-13 11:38:37,747 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] [2022-07-13 11:38:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2022-07-13 11:38:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3751. [2022-07-13 11:38:37,824 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) [2022-07-13 11:38:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5647 transitions. [2022-07-13 11:38:37,829 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5647 transitions. Word has length 347 [2022-07-13 11:38:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:37,829 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5647 transitions. [2022-07-13 11:38:37,829 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) [2022-07-13 11:38:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5647 transitions. [2022-07-13 11:38:37,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-13 11:38:37,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:37,835 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] [2022-07-13 11:38:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 11:38:37,836 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1676437080, now seen corresponding path program 1 times [2022-07-13 11:38:37,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:37,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929675362] [2022-07-13 11:38:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-13 11:38:38,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:38,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929675362] [2022-07-13 11:38:38,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929675362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:38,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:38,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203258238] [2022-07-13 11:38:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:38,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:38,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:38,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:38,033 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) [2022-07-13 11:38:39,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:39,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:39,448 INFO L93 Difference]: Finished difference Result 7633 states and 11461 transitions. [2022-07-13 11:38:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:39,448 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 [2022-07-13 11:38:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:39,453 INFO L225 Difference]: With dead ends: 7633 [2022-07-13 11:38:39,453 INFO L226 Difference]: Without dead ends: 3905 [2022-07-13 11:38:39,457 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 [2022-07-13 11:38:39,457 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 50 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:39,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 570 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:38:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2022-07-13 11:38:39,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3751. [2022-07-13 11:38:39,562 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) [2022-07-13 11:38:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5639 transitions. [2022-07-13 11:38:39,568 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5639 transitions. Word has length 347 [2022-07-13 11:38:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:39,568 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5639 transitions. [2022-07-13 11:38:39,568 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) [2022-07-13 11:38:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5639 transitions. [2022-07-13 11:38:39,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-13 11:38:39,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:39,575 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] [2022-07-13 11:38:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-13 11:38:39,576 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:39,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1905695684, now seen corresponding path program 1 times [2022-07-13 11:38:39,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:39,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870851948] [2022-07-13 11:38:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-07-13 11:38:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:39,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870851948] [2022-07-13 11:38:39,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870851948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:39,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:39,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:39,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752538638] [2022-07-13 11:38:39,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:39,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:39,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:39,752 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) [2022-07-13 11:38:41,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:41,991 INFO L93 Difference]: Finished difference Result 7550 states and 11341 transitions. [2022-07-13 11:38:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:41,991 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 [2022-07-13 11:38:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:41,994 INFO L225 Difference]: With dead ends: 7550 [2022-07-13 11:38:41,994 INFO L226 Difference]: Without dead ends: 3822 [2022-07-13 11:38:41,997 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 [2022-07-13 11:38:41,997 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 49 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:41,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 569 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:38:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2022-07-13 11:38:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3751. [2022-07-13 11:38:42,091 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) [2022-07-13 11:38:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5636 transitions. [2022-07-13 11:38:42,096 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5636 transitions. Word has length 348 [2022-07-13 11:38:42,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:42,096 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5636 transitions. [2022-07-13 11:38:42,097 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) [2022-07-13 11:38:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5636 transitions. [2022-07-13 11:38:42,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-13 11:38:42,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:42,104 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] [2022-07-13 11:38:42,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 11:38:42,104 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:42,104 INFO L85 PathProgramCache]: Analyzing trace with hash 712361294, now seen corresponding path program 1 times [2022-07-13 11:38:42,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:42,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288354496] [2022-07-13 11:38:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:42,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 687 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-13 11:38:42,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:42,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288354496] [2022-07-13 11:38:42,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288354496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:42,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:42,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682783060] [2022-07-13 11:38:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:42,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:42,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:42,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:42,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:42,256 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) [2022-07-13 11:38:44,263 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 [] [2022-07-13 11:38:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:44,519 INFO L93 Difference]: Finished difference Result 7601 states and 11395 transitions. [2022-07-13 11:38:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:44,520 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 [2022-07-13 11:38:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:44,524 INFO L225 Difference]: With dead ends: 7601 [2022-07-13 11:38:44,524 INFO L226 Difference]: Without dead ends: 3873 [2022-07-13 11:38:44,527 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 [2022-07-13 11:38:44,527 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 [2022-07-13 11:38:44,528 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] [2022-07-13 11:38:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-07-13 11:38:44,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3751. [2022-07-13 11:38:44,603 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) [2022-07-13 11:38:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5628 transitions. [2022-07-13 11:38:44,608 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5628 transitions. Word has length 348 [2022-07-13 11:38:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:44,608 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 5628 transitions. [2022-07-13 11:38:44,608 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) [2022-07-13 11:38:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5628 transitions. [2022-07-13 11:38:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-13 11:38:44,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:44,615 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] [2022-07-13 11:38:44,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-13 11:38:44,615 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1303941643, now seen corresponding path program 1 times [2022-07-13 11:38:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:44,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068781178] [2022-07-13 11:38:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:44,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 668 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-07-13 11:38:44,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068781178] [2022-07-13 11:38:44,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068781178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:44,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:44,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893839808] [2022-07-13 11:38:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:44,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:44,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:44,777 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) [2022-07-13 11:38:46,784 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 [] [2022-07-13 11:38:47,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:47,023 INFO L93 Difference]: Finished difference Result 7793 states and 11679 transitions. [2022-07-13 11:38:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:47,023 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 [2022-07-13 11:38:47,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:47,027 INFO L225 Difference]: With dead ends: 7793 [2022-07-13 11:38:47,027 INFO L226 Difference]: Without dead ends: 4065 [2022-07-13 11:38:47,029 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 [2022-07-13 11:38:47,030 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 [2022-07-13 11:38:47,030 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] [2022-07-13 11:38:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2022-07-13 11:38:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 3959. [2022-07-13 11:38:47,083 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) [2022-07-13 11:38:47,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5932 transitions. [2022-07-13 11:38:47,086 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5932 transitions. Word has length 348 [2022-07-13 11:38:47,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:47,086 INFO L495 AbstractCegarLoop]: Abstraction has 3959 states and 5932 transitions. [2022-07-13 11:38:47,087 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) [2022-07-13 11:38:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5932 transitions. [2022-07-13 11:38:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-07-13 11:38:47,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:47,091 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] [2022-07-13 11:38:47,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 11:38:47,092 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:47,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1881309984, now seen corresponding path program 1 times [2022-07-13 11:38:47,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:47,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409231484] [2022-07-13 11:38:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:47,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 682 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-07-13 11:38:47,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:47,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409231484] [2022-07-13 11:38:47,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409231484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:47,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:47,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038986270] [2022-07-13 11:38:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:47,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:47,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:47,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:47,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:47,261 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) [2022-07-13 11:38:49,277 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 [] [2022-07-13 11:38:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:49,523 INFO L93 Difference]: Finished difference Result 8065 states and 12079 transitions. [2022-07-13 11:38:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:49,524 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 [2022-07-13 11:38:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:49,527 INFO L225 Difference]: With dead ends: 8065 [2022-07-13 11:38:49,527 INFO L226 Difference]: Without dead ends: 4129 [2022-07-13 11:38:49,531 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 [2022-07-13 11:38:49,531 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 39 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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 [2022-07-13 11:38:49,532 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] [2022-07-13 11:38:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2022-07-13 11:38:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3959. [2022-07-13 11:38:49,583 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) [2022-07-13 11:38:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3959 states to 3959 states and 5924 transitions. [2022-07-13 11:38:49,587 INFO L78 Accepts]: Start accepts. Automaton has 3959 states and 5924 transitions. Word has length 354 [2022-07-13 11:38:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:49,588 INFO L495 AbstractCegarLoop]: Abstraction has 3959 states and 5924 transitions. [2022-07-13 11:38:49,588 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) [2022-07-13 11:38:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3959 states and 5924 transitions. [2022-07-13 11:38:49,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-13 11:38:49,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:49,593 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] [2022-07-13 11:38:49,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 11:38:49,593 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1131006309, now seen corresponding path program 2 times [2022-07-13 11:38:49,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:49,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554787323] [2022-07-13 11:38:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 817 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-13 11:38:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:49,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554787323] [2022-07-13 11:38:49,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554787323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:49,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:49,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:38:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895312187] [2022-07-13 11:38:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:38:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:38:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:49,857 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) [2022-07-13 11:38:51,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:53,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:54,776 INFO L93 Difference]: Finished difference Result 14483 states and 21737 transitions. [2022-07-13 11:38:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:38:54,777 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 [2022-07-13 11:38:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:54,785 INFO L225 Difference]: With dead ends: 14483 [2022-07-13 11:38:54,785 INFO L226 Difference]: Without dead ends: 10547 [2022-07-13 11:38:54,788 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 [2022-07-13 11:38:54,788 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 [2022-07-13 11:38:54,789 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] [2022-07-13 11:38:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2022-07-13 11:38:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 3827. [2022-07-13 11:38:54,920 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) [2022-07-13 11:38:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5724 transitions. [2022-07-13 11:38:54,923 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5724 transitions. Word has length 355 [2022-07-13 11:38:54,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:54,923 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5724 transitions. [2022-07-13 11:38:54,923 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) [2022-07-13 11:38:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5724 transitions. [2022-07-13 11:38:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-13 11:38:54,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:54,927 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] [2022-07-13 11:38:54,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 11:38:54,928 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1310451481, now seen corresponding path program 1 times [2022-07-13 11:38:54,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810643072] [2022-07-13 11:38:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:54,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2022-07-13 11:38:55,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:55,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810643072] [2022-07-13 11:38:55,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810643072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:55,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:55,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:38:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527499871] [2022-07-13 11:38:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:55,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:38:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:55,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:38:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:55,335 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) [2022-07-13 11:38:57,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:59,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:59,646 INFO L93 Difference]: Finished difference Result 7651 states and 11444 transitions. [2022-07-13 11:38:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:38:59,647 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 [2022-07-13 11:38:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:59,650 INFO L225 Difference]: With dead ends: 7651 [2022-07-13 11:38:59,650 INFO L226 Difference]: Without dead ends: 3827 [2022-07-13 11:38:59,653 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 [2022-07-13 11:38:59,653 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 7 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:59,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 643 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-07-13 11:38:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2022-07-13 11:38:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 3827. [2022-07-13 11:38:59,722 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) [2022-07-13 11:38:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5723 transitions. [2022-07-13 11:38:59,727 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5723 transitions. Word has length 355 [2022-07-13 11:38:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:59,727 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5723 transitions. [2022-07-13 11:38:59,727 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) [2022-07-13 11:38:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5723 transitions. [2022-07-13 11:38:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-13 11:38:59,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:59,732 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] [2022-07-13 11:38:59,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 11:38:59,733 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:59,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1162756329, now seen corresponding path program 1 times [2022-07-13 11:38:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:59,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145154562] [2022-07-13 11:38:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:59,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 395 proven. 706 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:39:01,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:01,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145154562] [2022-07-13 11:39:01,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145154562] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:39:01,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529178917] [2022-07-13 11:39:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:01,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:39:01,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:01,046 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) [2022-07-13 11:39:01,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:39:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:02,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 132 conjunts are in the unsatisfiable core [2022-07-13 11:39:02,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:39:02,043 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:39:02,044 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 [2022-07-13 11:39:02,146 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-13 11:39:02,146 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 [2022-07-13 11:39:02,197 INFO L356 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2022-07-13 11:39:02,199 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 [2022-07-13 11:39:02,263 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 [2022-07-13 11:39:02,283 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-13 11:39:02,283 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 [2022-07-13 11:39:02,310 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-13 11:39:02,311 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 [2022-07-13 11:39:02,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,408 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 [2022-07-13 11:39:02,431 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-13 11:39:02,432 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 [2022-07-13 11:39:02,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,591 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 [2022-07-13 11:39:02,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,641 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 [2022-07-13 11:39:02,652 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 [2022-07-13 11:39:02,713 INFO L356 Elim1Store]: treesize reduction 31, result has 44.6 percent of original size [2022-07-13 11:39:02,713 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 [2022-07-13 11:39:02,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,749 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-13 11:39:02,749 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 [2022-07-13 11:39:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,784 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-13 11:39:02,785 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 [2022-07-13 11:39:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,968 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 [2022-07-13 11:39:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:02,976 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 [2022-07-13 11:39:03,027 INFO L356 Elim1Store]: treesize reduction 246, result has 22.4 percent of original size [2022-07-13 11:39:03,028 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 [2022-07-13 11:39:04,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,496 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 [2022-07-13 11:39:04,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,539 INFO L356 Elim1Store]: treesize reduction 156, result has 23.5 percent of original size [2022-07-13 11:39:04,540 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 [2022-07-13 11:39:04,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:04,547 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 [2022-07-13 11:39:06,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,493 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 [2022-07-13 11:39:06,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,500 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 [2022-07-13 11:39:06,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,526 INFO L356 Elim1Store]: treesize reduction 183, result has 10.3 percent of original size [2022-07-13 11:39:06,527 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 [2022-07-13 11:39:06,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,628 INFO L356 Elim1Store]: treesize reduction 131, result has 25.6 percent of original size [2022-07-13 11:39:06,628 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 [2022-07-13 11:39:06,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,642 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 [2022-07-13 11:39:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:06,650 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 [2022-07-13 11:39:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,366 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 [2022-07-13 11:39:07,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:39:07,426 INFO L356 Elim1Store]: treesize reduction 113, result has 46.4 percent of original size [2022-07-13 11:39:07,427 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 [2022-07-13 11:39:07,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,451 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-13 11:39:07,451 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 [2022-07-13 11:39:07,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,612 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 [2022-07-13 11:39:07,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,627 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 [2022-07-13 11:39:07,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:07,654 INFO L356 Elim1Store]: treesize reduction 219, result has 8.8 percent of original size [2022-07-13 11:39:07,655 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 [2022-07-13 11:39:09,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,008 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 [2022-07-13 11:39:09,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,033 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-13 11:39:09,034 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 [2022-07-13 11:39:09,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,044 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 [2022-07-13 11:39:09,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,189 INFO L356 Elim1Store]: treesize reduction 76, result has 31.5 percent of original size [2022-07-13 11:39:09,190 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 [2022-07-13 11:39:09,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,230 INFO L356 Elim1Store]: treesize reduction 149, result has 22.0 percent of original size [2022-07-13 11:39:09,230 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 [2022-07-13 11:39:09,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,254 INFO L356 Elim1Store]: treesize reduction 68, result has 34.0 percent of original size [2022-07-13 11:39:09,255 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 [2022-07-13 11:39:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,369 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 [2022-07-13 11:39:09,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,392 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-13 11:39:09,392 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 [2022-07-13 11:39:09,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:09,398 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 [2022-07-13 11:39:10,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:10,693 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 [2022-07-13 11:39:10,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:10,698 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 [2022-07-13 11:39:10,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:10,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:10,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:10,717 INFO L356 Elim1Store]: treesize reduction 67, result has 11.8 percent of original size [2022-07-13 11:39:10,717 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 [2022-07-13 11:39:23,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:23,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:23,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:23,463 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-07-13 11:39:23,463 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 [2022-07-13 11:39:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 346 proven. 794 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:23,496 INFO L328 TraceCheckSpWp]: Computing backward predicates...