./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:53:58,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:53:58,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:53:58,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:53:58,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:53:58,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:53:58,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:53:58,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:53:58,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:53:58,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:53:58,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:53:58,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:53:58,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:53:58,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:53:58,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:53:58,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:53:58,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:53:58,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:53:58,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:53:58,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:53:58,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:53:58,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:53:58,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:53:58,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:53:58,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:53:58,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:53:58,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:53:58,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:53:58,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:53:58,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:53:58,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:53:58,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:53:58,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:53:58,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:53:58,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:53:58,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:53:58,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:53:58,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:53:58,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:53:58,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:53:58,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:53:58,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:53:58,745 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:53:58,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:53:58,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:53:58,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:53:58,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:53:58,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:53:58,748 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:53:58,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:53:58,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:53:58,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:53:58,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:53:58,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:53:58,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:53:58,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:53:58,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:53:58,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:53:58,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:53:58,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:53:58,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:53:58,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:53:58,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:53:58,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:53:58,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:53:58,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:53:58,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:53:58,752 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:53:58,752 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:53:58,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:53:58,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:53:58,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2021-11-07 14:53:58,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:53:58,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:53:58,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:53:58,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:53:58,998 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:53:58,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-07 14:53:59,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91d697a3/38f18f9e63344e4aa6de87b3d624590b/FLAGc839b72be [2021-11-07 14:53:59,612 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:53:59,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-07 14:53:59,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91d697a3/38f18f9e63344e4aa6de87b3d624590b/FLAGc839b72be [2021-11-07 14:54:00,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91d697a3/38f18f9e63344e4aa6de87b3d624590b [2021-11-07 14:54:00,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:54:00,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:54:00,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:54:00,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:54:00,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:54:00,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:54:00" (1/1) ... [2021-11-07 14:54:00,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c176d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:00, skipping insertion in model container [2021-11-07 14:54:00,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:54:00" (1/1) ... [2021-11-07 14:54:00,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:54:00,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:54:01,131 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-11-07 14:54:01,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:54:01,335 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:54:01,505 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-11-07 14:54:01,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:54:01,679 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:54:01,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01 WrapperNode [2021-11-07 14:54:01,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:54:01,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:54:01,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:54:01,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:54:01,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:01,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:54:02,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:54:02,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:54:02,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:54:02,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:54:02,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:54:02,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:54:02,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:54:02,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (1/1) ... [2021-11-07 14:54:02,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:54:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:54:02,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 14:54:02,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 14:54:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:54:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:54:02,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:54:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:54:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:54:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:54:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:54:02,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:54:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 14:54:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:54:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:54:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:55:13,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:55:13,600 INFO L299 CfgBuilder]: Removed 1329 assume(true) statements. [2021-11-07 14:55:13,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:13 BoogieIcfgContainer [2021-11-07 14:55:13,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:55:13,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:55:13,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:55:13,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:55:13,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:54:00" (1/3) ... [2021-11-07 14:55:13,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a149b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:13, skipping insertion in model container [2021-11-07 14:55:13,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:01" (2/3) ... [2021-11-07 14:55:13,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a149b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:55:13, skipping insertion in model container [2021-11-07 14:55:13,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:55:13" (3/3) ... [2021-11-07 14:55:13,610 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-07 14:55:13,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:55:13,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 14:55:13,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:55:13,654 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 14:55:13,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 14:55:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 1424 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1423 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 14:55:13,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:13,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:13,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash 754127617, now seen corresponding path program 1 times [2021-11-07 14:55:13,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:13,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609389309] [2021-11-07 14:55:13,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:13,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:14,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:14,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609389309] [2021-11-07 14:55:14,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609389309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:14,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:14,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:14,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260732262] [2021-11-07 14:55:14,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:14,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:14,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:15,029 INFO L87 Difference]: Start difference. First operand has 1424 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1423 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:16,006 INFO L93 Difference]: Finished difference Result 4138 states and 5781 transitions. [2021-11-07 14:55:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:16,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 14:55:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:16,031 INFO L225 Difference]: With dead ends: 4138 [2021-11-07 14:55:16,031 INFO L226 Difference]: Without dead ends: 2702 [2021-11-07 14:55:16,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:16,045 INFO L933 BasicCegarLoop]: 1968 mSDtfsCounter, 1773 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 719.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 848.24ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:16,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 3871 Invalid, 65 Unknown, 0 Unchecked, 12.96ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 848.24ms Time] [2021-11-07 14:55:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2021-11-07 14:55:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2686. [2021-11-07 14:55:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2675 states have (on average 1.3872897196261682) internal successors, (3711), 2685 states have internal predecessors, (3711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 3711 transitions. [2021-11-07 14:55:16,156 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 3711 transitions. Word has length 13 [2021-11-07 14:55:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:16,156 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 3711 transitions. [2021-11-07 14:55:16,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 3711 transitions. [2021-11-07 14:55:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 14:55:16,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:16,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:16,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:55:16,160 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:16,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1936008622, now seen corresponding path program 1 times [2021-11-07 14:55:16,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:16,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902736277] [2021-11-07 14:55:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:16,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:16,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:16,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902736277] [2021-11-07 14:55:16,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902736277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:16,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:16,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:16,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337252320] [2021-11-07 14:55:16,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:16,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:16,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:16,898 INFO L87 Difference]: Start difference. First operand 2686 states and 3711 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:19,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:55:19,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:19,639 INFO L93 Difference]: Finished difference Result 7866 states and 10890 transitions. [2021-11-07 14:55:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-07 14:55:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:19,657 INFO L225 Difference]: With dead ends: 7866 [2021-11-07 14:55:19,657 INFO L226 Difference]: Without dead ends: 5183 [2021-11-07 14:55:19,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:19,667 INFO L933 BasicCegarLoop]: 2137 mSDtfsCounter, 1929 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2460.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 3974 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.06ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2629.13ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:19,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 3974 Invalid, 15 Unknown, 0 Unchecked, 6.06ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2629.13ms Time] [2021-11-07 14:55:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2021-11-07 14:55:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5167. [2021-11-07 14:55:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5156 states have (on average 1.3902249806051203) internal successors, (7168), 5166 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 7168 transitions. [2021-11-07 14:55:19,787 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 7168 transitions. Word has length 14 [2021-11-07 14:55:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:19,788 INFO L470 AbstractCegarLoop]: Abstraction has 5167 states and 7168 transitions. [2021-11-07 14:55:19,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 7168 transitions. [2021-11-07 14:55:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 14:55:19,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:19,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:19,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:55:19,795 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1032247073, now seen corresponding path program 1 times [2021-11-07 14:55:19,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:19,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455067486] [2021-11-07 14:55:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:19,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:20,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:20,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455067486] [2021-11-07 14:55:20,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455067486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:20,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:20,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 14:55:20,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438717735] [2021-11-07 14:55:20,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:20,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 14:55:20,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:20,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 14:55:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:55:20,691 INFO L87 Difference]: Start difference. First operand 5167 states and 7168 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:22,257 INFO L93 Difference]: Finished difference Result 25673 states and 35628 transitions. [2021-11-07 14:55:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 14:55:22,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-07 14:55:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:22,349 INFO L225 Difference]: With dead ends: 25673 [2021-11-07 14:55:22,350 INFO L226 Difference]: Without dead ends: 20509 [2021-11-07 14:55:22,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 342.38ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 14:55:22,370 INFO L933 BasicCegarLoop]: 3832 mSDtfsCounter, 7691 mSDsluCounter, 15349 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 991.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7691 SdHoareTripleChecker+Valid, 19181 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.31ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1044.50ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:22,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7691 Valid, 19181 Invalid, 82 Unknown, 0 Unchecked, 19.31ms Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 1044.50ms Time] [2021-11-07 14:55:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2021-11-07 14:55:22,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 5217. [2021-11-07 14:55:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5206 states have (on average 1.3883980023050326) internal successors, (7228), 5216 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7228 transitions. [2021-11-07 14:55:22,695 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7228 transitions. Word has length 22 [2021-11-07 14:55:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:22,698 INFO L470 AbstractCegarLoop]: Abstraction has 5217 states and 7228 transitions. [2021-11-07 14:55:22,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7228 transitions. [2021-11-07 14:55:22,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 14:55:22,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:22,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:22,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:55:22,701 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:22,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1290412511, now seen corresponding path program 1 times [2021-11-07 14:55:22,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:22,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121661675] [2021-11-07 14:55:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:22,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:23,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:23,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121661675] [2021-11-07 14:55:23,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121661675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:23,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:23,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:55:23,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732602864] [2021-11-07 14:55:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:23,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:23,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:23,453 INFO L87 Difference]: Start difference. First operand 5217 states and 7228 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:23,622 INFO L93 Difference]: Finished difference Result 5217 states and 7228 transitions. [2021-11-07 14:55:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:23,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-07 14:55:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:23,632 INFO L225 Difference]: With dead ends: 5217 [2021-11-07 14:55:23,632 INFO L226 Difference]: Without dead ends: 5215 [2021-11-07 14:55:23,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:23,636 INFO L933 BasicCegarLoop]: 1954 mSDtfsCounter, 1935 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.67ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:23,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 1954 Invalid, 1 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 7.67ms Time] [2021-11-07 14:55:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2021-11-07 14:55:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 5215. [2021-11-07 14:55:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5205 states have (on average 1.3882804995196927) internal successors, (7226), 5214 states have internal predecessors, (7226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 7226 transitions. [2021-11-07 14:55:23,777 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 7226 transitions. Word has length 22 [2021-11-07 14:55:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:23,777 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 7226 transitions. [2021-11-07 14:55:23,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 7226 transitions. [2021-11-07 14:55:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 14:55:23,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:23,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:23,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 14:55:23,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1348092953, now seen corresponding path program 1 times [2021-11-07 14:55:23,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:23,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129080511] [2021-11-07 14:55:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:23,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:24,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:24,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129080511] [2021-11-07 14:55:24,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129080511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:24,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:24,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:55:24,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856920586] [2021-11-07 14:55:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:24,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:24,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:24,454 INFO L87 Difference]: Start difference. First operand 5215 states and 7226 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:24,539 INFO L93 Difference]: Finished difference Result 5215 states and 7226 transitions. [2021-11-07 14:55:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:24,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-07 14:55:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:24,550 INFO L225 Difference]: With dead ends: 5215 [2021-11-07 14:55:24,550 INFO L226 Difference]: Without dead ends: 5213 [2021-11-07 14:55:24,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:24,554 INFO L933 BasicCegarLoop]: 1952 mSDtfsCounter, 1932 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.97ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:24,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1932 Valid, 1952 Invalid, 1 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 8.97ms Time] [2021-11-07 14:55:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2021-11-07 14:55:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 5213. [2021-11-07 14:55:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5204 states have (on average 1.388162951575711) internal successors, (7224), 5212 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7224 transitions. [2021-11-07 14:55:24,701 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7224 transitions. Word has length 23 [2021-11-07 14:55:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:24,701 INFO L470 AbstractCegarLoop]: Abstraction has 5213 states and 7224 transitions. [2021-11-07 14:55:24,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7224 transitions. [2021-11-07 14:55:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 14:55:24,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:24,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:24,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:55:24,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1158780631, now seen corresponding path program 1 times [2021-11-07 14:55:24,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:24,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030958699] [2021-11-07 14:55:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:24,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:25,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:25,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030958699] [2021-11-07 14:55:25,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030958699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:25,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:25,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:55:25,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644831126] [2021-11-07 14:55:25,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:25,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:25,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:25,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:25,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:25,336 INFO L87 Difference]: Start difference. First operand 5213 states and 7224 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:25,693 INFO L93 Difference]: Finished difference Result 11833 states and 16404 transitions. [2021-11-07 14:55:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 14:55:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:25,704 INFO L225 Difference]: With dead ends: 11833 [2021-11-07 14:55:25,704 INFO L226 Difference]: Without dead ends: 6617 [2021-11-07 14:55:25,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:25,711 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 655 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 3801 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 165.74ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:25,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 3801 Invalid, 39 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [15 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 165.74ms Time] [2021-11-07 14:55:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2021-11-07 14:55:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6605. [2021-11-07 14:55:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6605 states, 6596 states have (on average 1.3869011522134627) internal successors, (9148), 6604 states have internal predecessors, (9148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 9148 transitions. [2021-11-07 14:55:25,895 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 9148 transitions. Word has length 24 [2021-11-07 14:55:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:25,895 INFO L470 AbstractCegarLoop]: Abstraction has 6605 states and 9148 transitions. [2021-11-07 14:55:25,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 9148 transitions. [2021-11-07 14:55:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 14:55:25,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:25,897 INFO L514 BasicCegarLoop]: 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] [2021-11-07 14:55:25,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:55:25,897 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1100373169, now seen corresponding path program 1 times [2021-11-07 14:55:25,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:25,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396976138] [2021-11-07 14:55:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:25,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:26,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:26,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396976138] [2021-11-07 14:55:26,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396976138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:26,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:26,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:26,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729150535] [2021-11-07 14:55:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:26,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:26,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:26,473 INFO L87 Difference]: Start difference. First operand 6605 states and 9148 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:28,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:55:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:29,669 INFO L93 Difference]: Finished difference Result 16483 states and 22886 transitions. [2021-11-07 14:55:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:29,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 14:55:29,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:29,693 INFO L225 Difference]: With dead ends: 16483 [2021-11-07 14:55:29,693 INFO L226 Difference]: Without dead ends: 9881 [2021-11-07 14:55:29,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:29,707 INFO L933 BasicCegarLoop]: 3692 mSDtfsCounter, 1820 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2860.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 5574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2987.56ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:29,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 5574 Invalid, 105 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [22 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 2987.56ms Time] [2021-11-07 14:55:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2021-11-07 14:55:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 9869. [2021-11-07 14:55:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9869 states, 9860 states have (on average 1.3841784989858013) internal successors, (13648), 9868 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 13648 transitions. [2021-11-07 14:55:30,001 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 13648 transitions. Word has length 35 [2021-11-07 14:55:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:30,003 INFO L470 AbstractCegarLoop]: Abstraction has 9869 states and 13648 transitions. [2021-11-07 14:55:30,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 13648 transitions. [2021-11-07 14:55:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 14:55:30,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:30,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:30,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 14:55:30,007 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:30,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 491641491, now seen corresponding path program 1 times [2021-11-07 14:55:30,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:30,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349346032] [2021-11-07 14:55:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:30,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:30,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:30,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349346032] [2021-11-07 14:55:30,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349346032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:30,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:30,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:30,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627968473] [2021-11-07 14:55:30,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:30,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:30,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:30,648 INFO L87 Difference]: Start difference. First operand 9869 states and 13648 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:31,319 INFO L93 Difference]: Finished difference Result 21004 states and 29115 transitions. [2021-11-07 14:55:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:31,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 14:55:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:31,346 INFO L225 Difference]: With dead ends: 21004 [2021-11-07 14:55:31,346 INFO L226 Difference]: Without dead ends: 11138 [2021-11-07 14:55:31,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:31,362 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 296 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 412.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 480.63ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:31,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 3888 Invalid, 17 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 480.63ms Time] [2021-11-07 14:55:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11138 states. [2021-11-07 14:55:31,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11138 to 11101. [2021-11-07 14:55:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11101 states, 11092 states have (on average 1.3909123692751533) internal successors, (15428), 11100 states have internal predecessors, (15428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 15428 transitions. [2021-11-07 14:55:31,612 INFO L78 Accepts]: Start accepts. Automaton has 11101 states and 15428 transitions. Word has length 42 [2021-11-07 14:55:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:31,613 INFO L470 AbstractCegarLoop]: Abstraction has 11101 states and 15428 transitions. [2021-11-07 14:55:31,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 11101 states and 15428 transitions. [2021-11-07 14:55:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 14:55:31,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:31,616 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:31,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 14:55:31,616 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:31,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1019502293, now seen corresponding path program 1 times [2021-11-07 14:55:31,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:31,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846518755] [2021-11-07 14:55:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:31,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 14:55:32,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:32,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846518755] [2021-11-07 14:55:32,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846518755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:32,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:32,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:32,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441381320] [2021-11-07 14:55:32,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:32,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:32,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:32,221 INFO L87 Difference]: Start difference. First operand 11101 states and 15428 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:34,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:55:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:35,486 INFO L93 Difference]: Finished difference Result 25871 states and 36082 transitions. [2021-11-07 14:55:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:35,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 14:55:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:35,570 INFO L225 Difference]: With dead ends: 25871 [2021-11-07 14:55:35,570 INFO L226 Difference]: Without dead ends: 14773 [2021-11-07 14:55:35,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:35,599 INFO L933 BasicCegarLoop]: 3753 mSDtfsCounter, 1845 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2811.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 5614 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2928.01ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:35,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 5614 Invalid, 106 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 1 Unknown, 0 Unchecked, 2928.01ms Time] [2021-11-07 14:55:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14773 states. [2021-11-07 14:55:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14773 to 14761. [2021-11-07 14:55:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14761 states, 14752 states have (on average 1.3882863340563991) internal successors, (20480), 14760 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14761 states to 14761 states and 20480 transitions. [2021-11-07 14:55:35,929 INFO L78 Accepts]: Start accepts. Automaton has 14761 states and 20480 transitions. Word has length 56 [2021-11-07 14:55:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:35,931 INFO L470 AbstractCegarLoop]: Abstraction has 14761 states and 20480 transitions. [2021-11-07 14:55:35,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 14761 states and 20480 transitions. [2021-11-07 14:55:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 14:55:35,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:35,935 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:35,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 14:55:35,936 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash 606612250, now seen corresponding path program 1 times [2021-11-07 14:55:35,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:35,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984245933] [2021-11-07 14:55:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:35,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:55:36,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:36,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984245933] [2021-11-07 14:55:36,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984245933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:36,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:36,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:36,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629298983] [2021-11-07 14:55:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:36,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:36,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:36,552 INFO L87 Difference]: Start difference. First operand 14761 states and 20480 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:37,169 INFO L93 Difference]: Finished difference Result 22959 states and 31781 transitions. [2021-11-07 14:55:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-07 14:55:37,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:37,212 INFO L225 Difference]: With dead ends: 22959 [2021-11-07 14:55:37,212 INFO L226 Difference]: Without dead ends: 8201 [2021-11-07 14:55:37,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:37,248 INFO L933 BasicCegarLoop]: 1951 mSDtfsCounter, 1948 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 400.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 455.93ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:37,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1948 Valid, 1955 Invalid, 4 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 455.93ms Time] [2021-11-07 14:55:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2021-11-07 14:55:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 7032. [2021-11-07 14:55:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7032 states, 7023 states have (on average 1.3948455076178272) internal successors, (9796), 7031 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 9796 transitions. [2021-11-07 14:55:37,498 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 9796 transitions. Word has length 71 [2021-11-07 14:55:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:37,498 INFO L470 AbstractCegarLoop]: Abstraction has 7032 states and 9796 transitions. [2021-11-07 14:55:37,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 9796 transitions. [2021-11-07 14:55:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 14:55:37,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:37,500 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:37,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 14:55:37,501 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2036984032, now seen corresponding path program 1 times [2021-11-07 14:55:37,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:37,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827493931] [2021-11-07 14:55:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:37,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:55:38,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:38,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827493931] [2021-11-07 14:55:38,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827493931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:38,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:38,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:55:38,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084927568] [2021-11-07 14:55:38,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:38,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:55:38,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:55:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:55:38,224 INFO L87 Difference]: Start difference. First operand 7032 states and 9796 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2021-11-07 14:55:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:39,985 INFO L93 Difference]: Finished difference Result 25642 states and 35557 transitions. [2021-11-07 14:55:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 14:55:39,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 72 [2021-11-07 14:55:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:40,025 INFO L225 Difference]: With dead ends: 25642 [2021-11-07 14:55:40,026 INFO L226 Difference]: Without dead ends: 18628 [2021-11-07 14:55:40,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 214.41ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:55:40,045 INFO L933 BasicCegarLoop]: 5413 mSDtfsCounter, 9217 mSDsluCounter, 7115 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1103.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9217 SdHoareTripleChecker+Valid, 12528 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.55ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1218.38ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:40,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9217 Valid, 12528 Invalid, 179 Unknown, 0 Unchecked, 15.55ms Time], IncrementalHoareTripleChecker [53 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1218.38ms Time] [2021-11-07 14:55:40,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18628 states. [2021-11-07 14:55:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18628 to 8668. [2021-11-07 14:55:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8668 states, 8659 states have (on average 1.4039727451206836) internal successors, (12157), 8667 states have internal predecessors, (12157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 12157 transitions. [2021-11-07 14:55:40,454 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 12157 transitions. Word has length 72 [2021-11-07 14:55:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:40,456 INFO L470 AbstractCegarLoop]: Abstraction has 8668 states and 12157 transitions. [2021-11-07 14:55:40,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2021-11-07 14:55:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 12157 transitions. [2021-11-07 14:55:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 14:55:40,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:40,458 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:40,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 14:55:40,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash -272132865, now seen corresponding path program 1 times [2021-11-07 14:55:40,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:40,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906529098] [2021-11-07 14:55:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:40,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:55:41,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:41,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906529098] [2021-11-07 14:55:41,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906529098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:41,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:41,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:41,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121849592] [2021-11-07 14:55:41,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:41,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:41,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:41,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:41,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:41,090 INFO L87 Difference]: Start difference. First operand 8668 states and 12157 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-11-07 14:55:43,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:55:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:44,244 INFO L93 Difference]: Finished difference Result 19354 states and 27157 transitions. [2021-11-07 14:55:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:44,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 73 [2021-11-07 14:55:44,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:44,263 INFO L225 Difference]: With dead ends: 19354 [2021-11-07 14:55:44,263 INFO L226 Difference]: Without dead ends: 10704 [2021-11-07 14:55:44,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:44,276 INFO L933 BasicCegarLoop]: 3742 mSDtfsCounter, 1820 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2796.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 5625 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.53ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2921.08ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:44,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 5625 Invalid, 105 Unknown, 0 Unchecked, 4.53ms Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 2921.08ms Time] [2021-11-07 14:55:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10704 states. [2021-11-07 14:55:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10704 to 10304. [2021-11-07 14:55:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10304 states, 10295 states have (on average 1.4024283632831471) internal successors, (14438), 10303 states have internal predecessors, (14438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 14438 transitions. [2021-11-07 14:55:44,523 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 14438 transitions. Word has length 73 [2021-11-07 14:55:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:44,523 INFO L470 AbstractCegarLoop]: Abstraction has 10304 states and 14438 transitions. [2021-11-07 14:55:44,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-11-07 14:55:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 14438 transitions. [2021-11-07 14:55:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 14:55:44,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:44,525 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:44,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 14:55:44,525 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash -698320662, now seen corresponding path program 1 times [2021-11-07 14:55:44,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:44,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84733305] [2021-11-07 14:55:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:44,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 14:55:45,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:45,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84733305] [2021-11-07 14:55:45,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84733305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:45,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:45,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:45,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728645612] [2021-11-07 14:55:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:45,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:45,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:45,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:45,110 INFO L87 Difference]: Start difference. First operand 10304 states and 14438 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-11-07 14:55:47,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:55:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:48,365 INFO L93 Difference]: Finished difference Result 22626 states and 31719 transitions. [2021-11-07 14:55:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 74 [2021-11-07 14:55:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:48,387 INFO L225 Difference]: With dead ends: 22626 [2021-11-07 14:55:48,387 INFO L226 Difference]: Without dead ends: 12340 [2021-11-07 14:55:48,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:48,402 INFO L933 BasicCegarLoop]: 3753 mSDtfsCounter, 1820 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2869.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 5636 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2992.45ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:48,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 5636 Invalid, 105 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 2992.45ms Time] [2021-11-07 14:55:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12340 states. [2021-11-07 14:55:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12340 to 11940. [2021-11-07 14:55:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11931 states have (on average 1.4013075182298216) internal successors, (16719), 11939 states have internal predecessors, (16719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16719 transitions. [2021-11-07 14:55:48,721 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16719 transitions. Word has length 74 [2021-11-07 14:55:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:48,722 INFO L470 AbstractCegarLoop]: Abstraction has 11940 states and 16719 transitions. [2021-11-07 14:55:48,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-11-07 14:55:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16719 transitions. [2021-11-07 14:55:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 14:55:48,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:48,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:48,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 14:55:48,725 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash 572881383, now seen corresponding path program 1 times [2021-11-07 14:55:48,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:48,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124751832] [2021-11-07 14:55:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:48,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:55:49,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:49,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124751832] [2021-11-07 14:55:49,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124751832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:49,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:49,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:55:49,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405138629] [2021-11-07 14:55:49,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:49,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:55:49,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:55:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:55:49,399 INFO L87 Difference]: Start difference. First operand 11940 states and 16719 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) [2021-11-07 14:55:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:50,377 INFO L93 Difference]: Finished difference Result 26638 states and 37251 transitions. [2021-11-07 14:55:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:55:50,377 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 74 [2021-11-07 14:55:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:50,401 INFO L225 Difference]: With dead ends: 26638 [2021-11-07 14:55:50,402 INFO L226 Difference]: Without dead ends: 14716 [2021-11-07 14:55:50,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:55:50,417 INFO L933 BasicCegarLoop]: 3772 mSDtfsCounter, 3872 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 5615 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.90ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 474.88ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:50,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3872 Valid, 5615 Invalid, 14 Unknown, 0 Unchecked, 6.90ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 474.88ms Time] [2021-11-07 14:55:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2021-11-07 14:55:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 11940. [2021-11-07 14:55:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11931 states have (on average 1.4011398876875367) internal successors, (16717), 11939 states have internal predecessors, (16717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16717 transitions. [2021-11-07 14:55:50,719 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16717 transitions. Word has length 74 [2021-11-07 14:55:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:50,719 INFO L470 AbstractCegarLoop]: Abstraction has 11940 states and 16717 transitions. [2021-11-07 14:55:50,720 INFO L471 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) [2021-11-07 14:55:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16717 transitions. [2021-11-07 14:55:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 14:55:50,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:50,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:50,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 14:55:50,722 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 245961564, now seen corresponding path program 1 times [2021-11-07 14:55:50,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:50,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828908729] [2021-11-07 14:55:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:50,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 14:55:51,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:51,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828908729] [2021-11-07 14:55:51,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828908729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:51,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:51,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:55:51,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684702525] [2021-11-07 14:55:51,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:51,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:55:51,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:51,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:55:51,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:55:51,365 INFO L87 Difference]: Start difference. First operand 11940 states and 16717 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) [2021-11-07 14:55:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:52,293 INFO L93 Difference]: Finished difference Result 26638 states and 37247 transitions. [2021-11-07 14:55:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:55:52,293 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 75 [2021-11-07 14:55:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:52,319 INFO L225 Difference]: With dead ends: 26638 [2021-11-07 14:55:52,319 INFO L226 Difference]: Without dead ends: 14716 [2021-11-07 14:55:52,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:55:52,332 INFO L933 BasicCegarLoop]: 3771 mSDtfsCounter, 3870 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 381.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3870 SdHoareTripleChecker+Valid, 5614 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.24ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 432.80ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:52,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3870 Valid, 5614 Invalid, 14 Unknown, 0 Unchecked, 5.24ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 432.80ms Time] [2021-11-07 14:55:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2021-11-07 14:55:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 11940. [2021-11-07 14:55:52,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11931 states have (on average 1.4009722571452519) internal successors, (16715), 11939 states have internal predecessors, (16715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16715 transitions. [2021-11-07 14:55:52,650 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16715 transitions. Word has length 75 [2021-11-07 14:55:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:52,650 INFO L470 AbstractCegarLoop]: Abstraction has 11940 states and 16715 transitions. [2021-11-07 14:55:52,650 INFO L471 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) [2021-11-07 14:55:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16715 transitions. [2021-11-07 14:55:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 14:55:52,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:52,652 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:52,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 14:55:52,653 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:52,653 INFO L85 PathProgramCache]: Analyzing trace with hash -544147174, now seen corresponding path program 1 times [2021-11-07 14:55:52,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:52,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455156310] [2021-11-07 14:55:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:52,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 14:55:53,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:53,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455156310] [2021-11-07 14:55:53,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455156310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:55:53,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:55:53,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:55:53,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300452980] [2021-11-07 14:55:53,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:55:53,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:55:53,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:55:53,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:55:53,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:53,220 INFO L87 Difference]: Start difference. First operand 11940 states and 16715 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-11-07 14:55:55,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:55:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:55:56,511 INFO L93 Difference]: Finished difference Result 25898 states and 36273 transitions. [2021-11-07 14:55:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:55:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 75 [2021-11-07 14:55:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:55:56,538 INFO L225 Difference]: With dead ends: 25898 [2021-11-07 14:55:56,538 INFO L226 Difference]: Without dead ends: 13976 [2021-11-07 14:55:56,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:55:56,556 INFO L933 BasicCegarLoop]: 3751 mSDtfsCounter, 1820 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2784.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.96ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2907.81ms IncrementalHoareTripleChecker+Time [2021-11-07 14:55:56,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1820 Valid, 5632 Invalid, 105 Unknown, 0 Unchecked, 4.96ms Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 2907.81ms Time] [2021-11-07 14:55:56,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13976 states. [2021-11-07 14:55:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13976 to 13576. [2021-11-07 14:55:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13576 states, 13567 states have (on average 1.4001621581779318) internal successors, (18996), 13575 states have internal predecessors, (18996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:55:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13576 states to 13576 states and 18996 transitions. [2021-11-07 14:55:57,042 INFO L78 Accepts]: Start accepts. Automaton has 13576 states and 18996 transitions. Word has length 75 [2021-11-07 14:55:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:55:57,042 INFO L470 AbstractCegarLoop]: Abstraction has 13576 states and 18996 transitions. [2021-11-07 14:55:57,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2021-11-07 14:55:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 13576 states and 18996 transitions. [2021-11-07 14:55:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 14:55:57,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:55:57,044 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:55:57,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 14:55:57,045 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:55:57,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:55:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash 173357725, now seen corresponding path program 1 times [2021-11-07 14:55:57,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:55:57,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427740284] [2021-11-07 14:55:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:57,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:55:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:55:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 14:55:57,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:55:57,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427740284] [2021-11-07 14:55:57,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427740284] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:55:57,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721296467] [2021-11-07 14:55:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:55:57,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:55:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:55:57,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:55:57,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:56:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:01,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 13227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 14:56:01,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:56:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:56:02,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:56:02,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721296467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:02,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:56:02,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-07 14:56:02,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135502373] [2021-11-07 14:56:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:02,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 14:56:02,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 14:56:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 14:56:02,187 INFO L87 Difference]: Start difference. First operand 13576 states and 18996 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:04,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:56:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:07,504 INFO L93 Difference]: Finished difference Result 40533 states and 56744 transitions. [2021-11-07 14:56:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 14:56:07,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 75 [2021-11-07 14:56:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:07,556 INFO L225 Difference]: With dead ends: 40533 [2021-11-07 14:56:07,556 INFO L226 Difference]: Without dead ends: 26967 [2021-11-07 14:56:07,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 832.90ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-07 14:56:07,582 INFO L933 BasicCegarLoop]: 3888 mSDtfsCounter, 1970 mSDsluCounter, 21316 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3857.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 25204 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4056.11ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:07,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1970 Valid, 25204 Invalid, 117 Unknown, 0 Unchecked, 14.47ms Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 1 Unknown, 0 Unchecked, 4056.11ms Time] [2021-11-07 14:56:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26967 states. [2021-11-07 14:56:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26967 to 13580. [2021-11-07 14:56:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13580 states, 13571 states have (on average 1.3996020926976642) internal successors, (18994), 13579 states have internal predecessors, (18994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13580 states to 13580 states and 18994 transitions. [2021-11-07 14:56:08,152 INFO L78 Accepts]: Start accepts. Automaton has 13580 states and 18994 transitions. Word has length 75 [2021-11-07 14:56:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:08,152 INFO L470 AbstractCegarLoop]: Abstraction has 13580 states and 18994 transitions. [2021-11-07 14:56:08,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 13580 states and 18994 transitions. [2021-11-07 14:56:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 14:56:08,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:08,154 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:08,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 14:56:08,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 14:56:08,367 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1583219236, now seen corresponding path program 1 times [2021-11-07 14:56:08,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:08,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46723531] [2021-11-07 14:56:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:08,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:56:08,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:08,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46723531] [2021-11-07 14:56:08,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46723531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:08,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:56:08,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:56:08,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210861276] [2021-11-07 14:56:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:08,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:56:08,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:56:08,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:56:08,976 INFO L87 Difference]: Start difference. First operand 13580 states and 18994 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:09,381 INFO L93 Difference]: Finished difference Result 27150 states and 37981 transitions. [2021-11-07 14:56:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:56:09,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 86 [2021-11-07 14:56:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:09,406 INFO L225 Difference]: With dead ends: 27150 [2021-11-07 14:56:09,406 INFO L226 Difference]: Without dead ends: 13588 [2021-11-07 14:56:09,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:56:09,422 INFO L933 BasicCegarLoop]: 1949 mSDtfsCounter, 0 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.89ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:09,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3893 Invalid, 6 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 37.89ms Time] [2021-11-07 14:56:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2021-11-07 14:56:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 13588. [2021-11-07 14:56:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13588 states, 13579 states have (on average 1.3993666691214375) internal successors, (19002), 13587 states have internal predecessors, (19002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 19002 transitions. [2021-11-07 14:56:09,960 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 19002 transitions. Word has length 86 [2021-11-07 14:56:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:09,960 INFO L470 AbstractCegarLoop]: Abstraction has 13588 states and 19002 transitions. [2021-11-07 14:56:09,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 19002 transitions. [2021-11-07 14:56:09,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 14:56:09,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:09,962 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:09,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 14:56:09,962 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:09,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1581372194, now seen corresponding path program 1 times [2021-11-07 14:56:09,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:09,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731112724] [2021-11-07 14:56:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:09,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:56:10,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:10,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731112724] [2021-11-07 14:56:10,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731112724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:10,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:56:10,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:56:10,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354771002] [2021-11-07 14:56:10,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:10,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:56:10,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:56:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:56:10,582 INFO L87 Difference]: Start difference. First operand 13588 states and 19002 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:12,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:56:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:13,507 INFO L93 Difference]: Finished difference Result 27156 states and 37980 transitions. [2021-11-07 14:56:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:56:13,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 86 [2021-11-07 14:56:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:13,531 INFO L225 Difference]: With dead ends: 27156 [2021-11-07 14:56:13,532 INFO L226 Difference]: Without dead ends: 13586 [2021-11-07 14:56:13,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:56:13,548 INFO L933 BasicCegarLoop]: 2469 mSDtfsCounter, 1852 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2414.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2521.23ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:13,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 3130 Invalid, 31 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 2521.23ms Time] [2021-11-07 14:56:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13586 states. [2021-11-07 14:56:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13586 to 13563. [2021-11-07 14:56:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13563 states, 13555 states have (on average 1.3980081150866839) internal successors, (18950), 13562 states have internal predecessors, (18950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13563 states to 13563 states and 18950 transitions. [2021-11-07 14:56:14,111 INFO L78 Accepts]: Start accepts. Automaton has 13563 states and 18950 transitions. Word has length 86 [2021-11-07 14:56:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:14,111 INFO L470 AbstractCegarLoop]: Abstraction has 13563 states and 18950 transitions. [2021-11-07 14:56:14,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13563 states and 18950 transitions. [2021-11-07 14:56:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 14:56:14,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:14,114 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:14,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 14:56:14,115 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash -678988661, now seen corresponding path program 1 times [2021-11-07 14:56:14,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:14,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115754439] [2021-11-07 14:56:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:14,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:56:14,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:14,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115754439] [2021-11-07 14:56:14,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115754439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:14,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:56:14,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:56:14,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206829562] [2021-11-07 14:56:14,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:14,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:56:14,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:56:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:56:14,706 INFO L87 Difference]: Start difference. First operand 13563 states and 18950 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:16,788 INFO L93 Difference]: Finished difference Result 66935 states and 93632 transitions. [2021-11-07 14:56:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:56:16,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 14:56:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:16,908 INFO L225 Difference]: With dead ends: 66935 [2021-11-07 14:56:16,909 INFO L226 Difference]: Without dead ends: 53390 [2021-11-07 14:56:16,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:56:16,951 INFO L933 BasicCegarLoop]: 4058 mSDtfsCounter, 5647 mSDsluCounter, 5973 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 409.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5647 SdHoareTripleChecker+Valid, 10031 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.31ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 440.99ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:16,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5647 Valid, 10031 Invalid, 37 Unknown, 0 Unchecked, 11.31ms Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 440.99ms Time] [2021-11-07 14:56:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53390 states. [2021-11-07 14:56:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53390 to 13567. [2021-11-07 14:56:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13567 states, 13559 states have (on average 1.3978906999041227) internal successors, (18954), 13566 states have internal predecessors, (18954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 18954 transitions. [2021-11-07 14:56:17,833 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 18954 transitions. Word has length 87 [2021-11-07 14:56:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:17,833 INFO L470 AbstractCegarLoop]: Abstraction has 13567 states and 18954 transitions. [2021-11-07 14:56:17,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 18954 transitions. [2021-11-07 14:56:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 14:56:17,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:17,836 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:17,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 14:56:17,836 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1723322813, now seen corresponding path program 1 times [2021-11-07 14:56:17,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:17,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063162620] [2021-11-07 14:56:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:17,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:56:18,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:18,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063162620] [2021-11-07 14:56:18,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063162620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:18,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:56:18,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:56:18,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178360724] [2021-11-07 14:56:18,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:18,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:56:18,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:56:18,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:56:18,410 INFO L87 Difference]: Start difference. First operand 13567 states and 18954 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:20,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:56:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:22,049 INFO L93 Difference]: Finished difference Result 40477 states and 56590 transitions. [2021-11-07 14:56:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:56:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 14:56:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:22,103 INFO L225 Difference]: With dead ends: 40477 [2021-11-07 14:56:22,104 INFO L226 Difference]: Without dead ends: 26928 [2021-11-07 14:56:22,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:56:22,122 INFO L933 BasicCegarLoop]: 1968 mSDtfsCounter, 1923 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2353.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2464.74ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:22,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1923 Valid, 3911 Invalid, 7 Unknown, 0 Unchecked, 4.28ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2464.74ms Time] [2021-11-07 14:56:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2021-11-07 14:56:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 26855. [2021-11-07 14:56:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26855 states, 26847 states have (on average 1.3997094647446642) internal successors, (37578), 26854 states have internal predecessors, (37578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26855 states to 26855 states and 37578 transitions. [2021-11-07 14:56:23,227 INFO L78 Accepts]: Start accepts. Automaton has 26855 states and 37578 transitions. Word has length 89 [2021-11-07 14:56:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:23,227 INFO L470 AbstractCegarLoop]: Abstraction has 26855 states and 37578 transitions. [2021-11-07 14:56:23,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26855 states and 37578 transitions. [2021-11-07 14:56:23,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 14:56:23,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:23,231 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:23,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 14:56:23,231 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2048144034, now seen corresponding path program 1 times [2021-11-07 14:56:23,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:23,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702657226] [2021-11-07 14:56:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:23,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:56:23,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:23,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702657226] [2021-11-07 14:56:23,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702657226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:23,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:56:23,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:56:23,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924580937] [2021-11-07 14:56:23,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:23,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:56:23,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:56:23,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:56:23,847 INFO L87 Difference]: Start difference. First operand 26855 states and 37578 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) [2021-11-07 14:56:28,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:28,663 INFO L93 Difference]: Finished difference Result 132621 states and 185794 transitions. [2021-11-07 14:56:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:56:28,663 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 92 [2021-11-07 14:56:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:28,902 INFO L225 Difference]: With dead ends: 132621 [2021-11-07 14:56:28,902 INFO L226 Difference]: Without dead ends: 105784 [2021-11-07 14:56:28,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:56:28,955 INFO L933 BasicCegarLoop]: 7496 mSDtfsCounter, 3731 mSDsluCounter, 7529 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 886.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3731 SdHoareTripleChecker+Valid, 15025 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.67ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 948.16ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:28,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3731 Valid, 15025 Invalid, 43 Unknown, 0 Unchecked, 12.67ms Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 948.16ms Time] [2021-11-07 14:56:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105784 states. [2021-11-07 14:56:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105784 to 26771. [2021-11-07 14:56:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26771 states, 26763 states have (on average 1.3996188768075328) internal successors, (37458), 26770 states have internal predecessors, (37458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26771 states to 26771 states and 37458 transitions. [2021-11-07 14:56:30,871 INFO L78 Accepts]: Start accepts. Automaton has 26771 states and 37458 transitions. Word has length 92 [2021-11-07 14:56:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:30,872 INFO L470 AbstractCegarLoop]: Abstraction has 26771 states and 37458 transitions. [2021-11-07 14:56:30,872 INFO L471 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) [2021-11-07 14:56:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 26771 states and 37458 transitions. [2021-11-07 14:56:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 14:56:30,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:30,878 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:30,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 14:56:30,879 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:30,879 INFO L85 PathProgramCache]: Analyzing trace with hash -188643836, now seen corresponding path program 1 times [2021-11-07 14:56:30,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:30,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955152911] [2021-11-07 14:56:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:30,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 14:56:31,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:31,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955152911] [2021-11-07 14:56:31,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955152911] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:56:31,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687926217] [2021-11-07 14:56:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:31,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:56:31,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:56:31,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:56:31,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 14:56:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:34,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 13401 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 14:56:34,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:56:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 14:56:35,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:56:35,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687926217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:35,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:56:35,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 14:56:35,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971820682] [2021-11-07 14:56:35,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:35,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:56:35,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:56:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:56:35,785 INFO L87 Difference]: Start difference. First operand 26771 states and 37458 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2021-11-07 14:56:38,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:56:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:41,858 INFO L93 Difference]: Finished difference Result 80279 states and 112329 transitions. [2021-11-07 14:56:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:56:41,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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 97 [2021-11-07 14:56:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:42,027 INFO L225 Difference]: With dead ends: 80279 [2021-11-07 14:56:42,027 INFO L226 Difference]: Without dead ends: 80271 [2021-11-07 14:56:42,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.94ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:56:42,063 INFO L933 BasicCegarLoop]: 3755 mSDtfsCounter, 3803 mSDsluCounter, 3992 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2511.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3803 SdHoareTripleChecker+Valid, 7747 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.32ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2633.35ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:42,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3803 Valid, 7747 Invalid, 38 Unknown, 0 Unchecked, 7.32ms Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2633.35ms Time] [2021-11-07 14:56:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80271 states. [2021-11-07 14:56:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80271 to 80183. [2021-11-07 14:56:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80183 states, 80175 states have (on average 1.3996632366697848) internal successors, (112218), 80182 states have internal predecessors, (112218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80183 states to 80183 states and 112218 transitions. [2021-11-07 14:56:46,144 INFO L78 Accepts]: Start accepts. Automaton has 80183 states and 112218 transitions. Word has length 97 [2021-11-07 14:56:46,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:46,145 INFO L470 AbstractCegarLoop]: Abstraction has 80183 states and 112218 transitions. [2021-11-07 14:56:46,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2021-11-07 14:56:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 80183 states and 112218 transitions. [2021-11-07 14:56:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 14:56:46,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:46,151 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:46,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 14:56:46,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 14:56:46,366 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:46,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1901741403, now seen corresponding path program 1 times [2021-11-07 14:56:46,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:46,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651506729] [2021-11-07 14:56:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:46,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 14:56:47,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:47,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651506729] [2021-11-07 14:56:47,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651506729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:56:47,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:56:47,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:56:47,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485203540] [2021-11-07 14:56:47,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:56:47,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:56:47,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:56:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:56:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:56:47,092 INFO L87 Difference]: Start difference. First operand 80183 states and 112218 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) [2021-11-07 14:56:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:56:52,119 INFO L93 Difference]: Finished difference Result 101388 states and 141492 transitions. [2021-11-07 14:56:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:56:52,120 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 98 [2021-11-07 14:56:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:56:52,323 INFO L225 Difference]: With dead ends: 101388 [2021-11-07 14:56:52,323 INFO L226 Difference]: Without dead ends: 96398 [2021-11-07 14:56:52,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:56:52,363 INFO L933 BasicCegarLoop]: 3765 mSDtfsCounter, 3864 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 615.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 5605 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.60ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 670.74ms IncrementalHoareTripleChecker+Time [2021-11-07 14:56:52,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3864 Valid, 5605 Invalid, 14 Unknown, 0 Unchecked, 7.60ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 670.74ms Time] [2021-11-07 14:56:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96398 states. [2021-11-07 14:56:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96398 to 80183. [2021-11-07 14:56:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80183 states, 80175 states have (on average 1.399513564078578) internal successors, (112206), 80182 states have internal predecessors, (112206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:56:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80183 states to 80183 states and 112206 transitions. [2021-11-07 14:56:56,848 INFO L78 Accepts]: Start accepts. Automaton has 80183 states and 112206 transitions. Word has length 98 [2021-11-07 14:56:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:56:56,849 INFO L470 AbstractCegarLoop]: Abstraction has 80183 states and 112206 transitions. [2021-11-07 14:56:56,849 INFO L471 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) [2021-11-07 14:56:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 80183 states and 112206 transitions. [2021-11-07 14:56:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 14:56:56,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:56:56,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:56:56,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 14:56:56,859 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 14:56:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:56:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1178813530, now seen corresponding path program 1 times [2021-11-07 14:56:56,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:56:56,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907569299] [2021-11-07 14:56:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:56,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:56:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:56:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 14:56:57,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:56:57,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907569299] [2021-11-07 14:56:57,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907569299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:56:57,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864509083] [2021-11-07 14:56:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:56:57,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:56:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:56:57,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:56:57,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 14:57:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:01,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 13386 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 14:57:01,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:57:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:57:02,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:57:02,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864509083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:02,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:57:02,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-07 14:57:02,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265747877] [2021-11-07 14:57:02,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:02,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:02,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:02,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:57:02,316 INFO L87 Difference]: Start difference. First operand 80183 states and 112206 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:04,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []