./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--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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--md--dm-raid.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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:22:32,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:22:32,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:22:32,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:22:32,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:22:32,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:22:32,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:22:32,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:22:32,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:22:32,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:22:32,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:22:32,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:22:32,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:22:32,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:22:32,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:22:32,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:22:32,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:22:32,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:22:32,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:22:32,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:22:32,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:22:32,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:22:32,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:22:32,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:22:32,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:22:32,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:22:32,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:22:32,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:22:32,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:22:32,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:22:32,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:22:32,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:22:32,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:22:32,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:22:32,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:22:32,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:22:32,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:22:32,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:22:32,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:22:32,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:22:32,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:22:32,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:22:32,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:22:32,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:22:32,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:22:32,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:22:32,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:22:32,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:22:32,146 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:22:32,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:22:32,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:22:32,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:22:32,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:22:32,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:22:32,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:22:32,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:22:32,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:22:32,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:22:32,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:22:32,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:22:32,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:22:32,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:22:32,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:22:32,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:22:32,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:22:32,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:22:32,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:22:32,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:22:32,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:22:32,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:22:32,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:22:32,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-11-05 18:22:32,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:22:32,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:22:32,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:22:32,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:22:32,420 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:22:32,421 INFO L432 ainManager$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--md--dm-raid.ko-entry_point.cil.out.i [2021-11-05 18:22:32,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fe5f6aa/ae5aa4c1b13f4c498007e52955fec3d3/FLAG4314c4592 [2021-11-05 18:22:33,003 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:22:33,004 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--md--dm-raid.ko-entry_point.cil.out.i [2021-11-05 18:22:33,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fe5f6aa/ae5aa4c1b13f4c498007e52955fec3d3/FLAG4314c4592 [2021-11-05 18:22:33,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fe5f6aa/ae5aa4c1b13f4c498007e52955fec3d3 [2021-11-05 18:22:33,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:22:33,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:22:33,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:22:33,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:22:33,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:22:33,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:22:33" (1/1) ... [2021-11-05 18:22:33,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f89214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:33, skipping insertion in model container [2021-11-05 18:22:33,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:22:33" (1/1) ... [2021-11-05 18:22:33,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:22:33,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:22:34,202 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--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-05 18:22:34,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:22:34,306 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:22:34,546 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--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-05 18:22:34,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:22:34,624 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:22:34,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34 WrapperNode [2021-11-05 18:22:34,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:22:34,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:22:34,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:22:34,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:22:34,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:34,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:22:35,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:22:35,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:22:35,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:22:35,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:22:35,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:22:35,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:22:35,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:22:35,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (1/1) ... [2021-11-05 18:22:35,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:22:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:22:35,398 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) [2021-11-05 18:22:35,416 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 [2021-11-05 18:22:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:22:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:22:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:22:35,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:22:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:22:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:22:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:22:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:22:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:22:35,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:22:35,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:22:55,118 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:22:55,119 INFO L299 CfgBuilder]: Removed 1242 assume(true) statements. [2021-11-05 18:22:55,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:22:55 BoogieIcfgContainer [2021-11-05 18:22:55,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:22:55,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:22:55,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:22:55,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:22:55,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:22:33" (1/3) ... [2021-11-05 18:22:55,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b5f3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:22:55, skipping insertion in model container [2021-11-05 18:22:55,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:22:34" (2/3) ... [2021-11-05 18:22:55,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b5f3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:22:55, skipping insertion in model container [2021-11-05 18:22:55,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:22:55" (3/3) ... [2021-11-05 18:22:55,126 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-05 18:22:55,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:22:55,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 18:22:55,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:22:55,172 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 [2021-11-05 18:22:55,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 18:22:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 18:22:55,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:55,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:55,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:22:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2042928576, now seen corresponding path program 1 times [2021-11-05 18:22:55,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:55,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600469392] [2021-11-05 18:22:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:55,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:22:55,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:55,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600469392] [2021-11-05 18:22:55,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600469392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:55,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:55,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:22:55,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716266059] [2021-11-05 18:22:55,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:55,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:22:55,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:22:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:22:55,721 INFO L87 Difference]: Start difference. First operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 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) [2021-11-05 18:22:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:55,818 INFO L93 Difference]: Finished difference Result 3944 states and 5765 transitions. [2021-11-05 18:22:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:22:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-05 18:22:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:55,839 INFO L225 Difference]: With dead ends: 3944 [2021-11-05 18:22:55,840 INFO L226 Difference]: Without dead ends: 1965 [2021-11-05 18:22:55,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:22:55,851 INFO L933 BasicCegarLoop]: 2867 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:55,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 7.33ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:22:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-11-05 18:22:55,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2021-11-05 18:22:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1960 states have (on average 1.4556122448979592) internal successors, (2853), 1964 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2853 transitions. [2021-11-05 18:22:55,948 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2853 transitions. Word has length 66 [2021-11-05 18:22:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:55,948 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 2853 transitions. [2021-11-05 18:22:55,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 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) [2021-11-05 18:22:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2853 transitions. [2021-11-05 18:22:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 18:22:55,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:55,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:55,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:22:55,953 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:22:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1498030002, now seen corresponding path program 1 times [2021-11-05 18:22:55,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:55,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113414313] [2021-11-05 18:22:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:55,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:22:56,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:56,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113414313] [2021-11-05 18:22:56,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113414313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:56,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:56,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:22:56,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152008355] [2021-11-05 18:22:56,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:56,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:22:56,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:56,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:22:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:56,226 INFO L87 Difference]: Start difference. First operand 1965 states and 2853 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2021-11-05 18:22:58,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:22:58,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:58,502 INFO L93 Difference]: Finished difference Result 5761 states and 8411 transitions. [2021-11-05 18:22:58,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:22:58,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-05 18:22:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:58,515 INFO L225 Difference]: With dead ends: 5761 [2021-11-05 18:22:58,516 INFO L226 Difference]: Without dead ends: 3853 [2021-11-05 18:22:58,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:58,521 INFO L933 BasicCegarLoop]: 2850 mSDtfsCounter, 2763 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2067.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2763 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.33ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2191.25ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:58,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2763 Valid, 5689 Invalid, 15 Unknown, 0 Unchecked, 9.33ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2191.25ms Time] [2021-11-05 18:22:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2021-11-05 18:22:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2021-11-05 18:22:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3846 states have (on average 1.4607384295371815) internal successors, (5618), 3850 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5618 transitions. [2021-11-05 18:22:58,606 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5618 transitions. Word has length 66 [2021-11-05 18:22:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:58,606 INFO L470 AbstractCegarLoop]: Abstraction has 3851 states and 5618 transitions. [2021-11-05 18:22:58,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2021-11-05 18:22:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5618 transitions. [2021-11-05 18:22:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-05 18:22:58,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:58,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:58,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:22:58,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:22:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1146020226, now seen corresponding path program 1 times [2021-11-05 18:22:58,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:58,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164973340] [2021-11-05 18:22:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:58,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:22:58,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:58,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164973340] [2021-11-05 18:22:58,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164973340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:58,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:58,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:22:58,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855950715] [2021-11-05 18:22:58,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:58,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:22:58,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:58,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:22:58,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:58,806 INFO L87 Difference]: Start difference. First operand 3851 states and 5618 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:58,857 INFO L93 Difference]: Finished difference Result 3851 states and 5618 transitions. [2021-11-05 18:22:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:22:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-05 18:22:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:58,870 INFO L225 Difference]: With dead ends: 3851 [2021-11-05 18:22:58,870 INFO L226 Difference]: Without dead ends: 3849 [2021-11-05 18:22:58,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:58,873 INFO L933 BasicCegarLoop]: 2850 mSDtfsCounter, 2783 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.73ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:58,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2783 Valid, 2850 Invalid, 1 Unknown, 0 Unchecked, 4.91ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.73ms Time] [2021-11-05 18:22:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2021-11-05 18:22:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3849. [2021-11-05 18:22:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3845 states have (on average 1.460598179453836) internal successors, (5616), 3848 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5616 transitions. [2021-11-05 18:22:59,003 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5616 transitions. Word has length 70 [2021-11-05 18:22:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:59,003 INFO L470 AbstractCegarLoop]: Abstraction has 3849 states and 5616 transitions. [2021-11-05 18:22:59,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5616 transitions. [2021-11-05 18:22:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 18:22:59,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:59,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:59,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:22:59,005 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:22:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1166875682, now seen corresponding path program 1 times [2021-11-05 18:22:59,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:59,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641867216] [2021-11-05 18:22:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:59,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:22:59,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:59,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641867216] [2021-11-05 18:22:59,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641867216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:59,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:59,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:22:59,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444448377] [2021-11-05 18:22:59,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:59,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:22:59,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:22:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:59,185 INFO L87 Difference]: Start difference. First operand 3849 states and 5616 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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) [2021-11-05 18:22:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:59,249 INFO L93 Difference]: Finished difference Result 3849 states and 5616 transitions. [2021-11-05 18:22:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:22:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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 [2021-11-05 18:22:59,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:59,261 INFO L225 Difference]: With dead ends: 3849 [2021-11-05 18:22:59,261 INFO L226 Difference]: Without dead ends: 3847 [2021-11-05 18:22:59,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:59,264 INFO L933 BasicCegarLoop]: 2848 mSDtfsCounter, 2780 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.55ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:59,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 2848 Invalid, 1 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.55ms Time] [2021-11-05 18:22:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2021-11-05 18:22:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3847. [2021-11-05 18:22:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 3844 states have (on average 1.4604578563995838) internal successors, (5614), 3846 states have internal predecessors, (5614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 5614 transitions. [2021-11-05 18:22:59,351 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 5614 transitions. Word has length 71 [2021-11-05 18:22:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:59,352 INFO L470 AbstractCegarLoop]: Abstraction has 3847 states and 5614 transitions. [2021-11-05 18:22:59,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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) [2021-11-05 18:22:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 5614 transitions. [2021-11-05 18:22:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 18:22:59,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:59,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:59,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 18:22:59,354 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:22:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1813394808, now seen corresponding path program 1 times [2021-11-05 18:22:59,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:59,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207953812] [2021-11-05 18:22:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:59,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:22:59,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:59,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207953812] [2021-11-05 18:22:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207953812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:59,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:59,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:22:59,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334270472] [2021-11-05 18:22:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:59,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:22:59,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:59,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:22:59,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:59,529 INFO L87 Difference]: Start difference. First operand 3847 states and 5614 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:59,582 INFO L93 Difference]: Finished difference Result 3847 states and 5614 transitions. [2021-11-05 18:22:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:22:59,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2021-11-05 18:22:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:22:59,594 INFO L225 Difference]: With dead ends: 3847 [2021-11-05 18:22:59,594 INFO L226 Difference]: Without dead ends: 3845 [2021-11-05 18:22:59,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:59,596 INFO L933 BasicCegarLoop]: 2846 mSDtfsCounter, 2777 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.12ms IncrementalHoareTripleChecker+Time [2021-11-05 18:22:59,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2777 Valid, 2846 Invalid, 1 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.12ms Time] [2021-11-05 18:22:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2021-11-05 18:22:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3845. [2021-11-05 18:22:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3843 states have (on average 1.4603174603174602) internal successors, (5612), 3844 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5612 transitions. [2021-11-05 18:22:59,673 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5612 transitions. Word has length 72 [2021-11-05 18:22:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:22:59,675 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 5612 transitions. [2021-11-05 18:22:59,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5612 transitions. [2021-11-05 18:22:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 18:22:59,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:22:59,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:22:59,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:22:59,680 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:22:59,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:22:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash -380651224, now seen corresponding path program 1 times [2021-11-05 18:22:59,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:22:59,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561093969] [2021-11-05 18:22:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:22:59,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:22:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:22:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:22:59,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:22:59,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561093969] [2021-11-05 18:22:59,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561093969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:22:59,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:22:59,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:22:59,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639589168] [2021-11-05 18:22:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:22:59,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:22:59,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:22:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:22:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:22:59,842 INFO L87 Difference]: Start difference. First operand 3845 states and 5612 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:22:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:22:59,997 INFO L93 Difference]: Finished difference Result 7615 states and 11138 transitions. [2021-11-05 18:22:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:22:59,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2021-11-05 18:22:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:00,024 INFO L225 Difference]: With dead ends: 7615 [2021-11-05 18:23:00,025 INFO L226 Difference]: Without dead ends: 7606 [2021-11-05 18:23:00,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:00,028 INFO L933 BasicCegarLoop]: 2846 mSDtfsCounter, 2761 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 5625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.90ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:00,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 5625 Invalid, 6 Unknown, 0 Unchecked, 6.84ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 10.90ms Time] [2021-11-05 18:23:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-11-05 18:23:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7606. [2021-11-05 18:23:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 7604 states have (on average 1.4631772751183587) internal successors, (11126), 7605 states have internal predecessors, (11126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 11126 transitions. [2021-11-05 18:23:00,191 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 11126 transitions. Word has length 73 [2021-11-05 18:23:00,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:00,191 INFO L470 AbstractCegarLoop]: Abstraction has 7606 states and 11126 transitions. [2021-11-05 18:23:00,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 11126 transitions. [2021-11-05 18:23:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 18:23:00,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:00,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:00,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 18:23:00,199 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1086031317, now seen corresponding path program 1 times [2021-11-05 18:23:00,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:00,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300542948] [2021-11-05 18:23:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:00,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:23:00,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:00,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300542948] [2021-11-05 18:23:00,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300542948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:00,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:00,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:23:00,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762301153] [2021-11-05 18:23:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:00,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:23:00,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:23:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:00,344 INFO L87 Difference]: Start difference. First operand 7606 states and 11126 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:00,840 INFO L93 Difference]: Finished difference Result 15302 states and 22402 transitions. [2021-11-05 18:23:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:23:00,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-11-05 18:23:00,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:00,854 INFO L225 Difference]: With dead ends: 15302 [2021-11-05 18:23:00,855 INFO L226 Difference]: Without dead ends: 7753 [2021-11-05 18:23:00,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:00,865 INFO L933 BasicCegarLoop]: 2856 mSDtfsCounter, 119 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 305.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.31ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.83ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:00,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 5522 Invalid, 119 Unknown, 0 Unchecked, 6.31ms Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 344.83ms Time] [2021-11-05 18:23:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7753 states. [2021-11-05 18:23:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7753 to 7746. [2021-11-05 18:23:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 7744 states have (on average 1.4630681818181819) internal successors, (11330), 7745 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 11330 transitions. [2021-11-05 18:23:01,073 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 11330 transitions. Word has length 138 [2021-11-05 18:23:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:01,073 INFO L470 AbstractCegarLoop]: Abstraction has 7746 states and 11330 transitions. [2021-11-05 18:23:01,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 11330 transitions. [2021-11-05 18:23:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 18:23:01,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:01,080 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:01,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 18:23:01,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:01,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash -66254471, now seen corresponding path program 1 times [2021-11-05 18:23:01,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:01,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328352207] [2021-11-05 18:23:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:01,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:01,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:01,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328352207] [2021-11-05 18:23:01,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328352207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:01,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:01,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:23:01,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267675805] [2021-11-05 18:23:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:01,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:23:01,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:23:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:01,240 INFO L87 Difference]: Start difference. First operand 7746 states and 11330 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:01,390 INFO L93 Difference]: Finished difference Result 15439 states and 22604 transitions. [2021-11-05 18:23:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:23:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-05 18:23:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:01,403 INFO L225 Difference]: With dead ends: 15439 [2021-11-05 18:23:01,404 INFO L226 Difference]: Without dead ends: 7750 [2021-11-05 18:23:01,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:01,413 INFO L933 BasicCegarLoop]: 2846 mSDtfsCounter, 0 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.83ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:01,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5687 Invalid, 6 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 14.83ms Time] [2021-11-05 18:23:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2021-11-05 18:23:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7750. [2021-11-05 18:23:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 7748 states have (on average 1.4628291171915333) internal successors, (11334), 7749 states have internal predecessors, (11334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 11334 transitions. [2021-11-05 18:23:01,559 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 11334 transitions. Word has length 149 [2021-11-05 18:23:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:01,559 INFO L470 AbstractCegarLoop]: Abstraction has 7750 states and 11334 transitions. [2021-11-05 18:23:01,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 11334 transitions. [2021-11-05 18:23:01,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 18:23:01,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:01,568 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:01,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 18:23:01,568 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:01,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash 135569463, now seen corresponding path program 1 times [2021-11-05 18:23:01,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:01,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525881128] [2021-11-05 18:23:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:01,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:01,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:01,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525881128] [2021-11-05 18:23:01,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525881128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:01,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:01,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:23:01,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298561554] [2021-11-05 18:23:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:01,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:23:01,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:23:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:23:01,758 INFO L87 Difference]: Start difference. First operand 7750 states and 11334 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:02,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:02,315 INFO L93 Difference]: Finished difference Result 30121 states and 43942 transitions. [2021-11-05 18:23:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:23:02,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-05 18:23:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:02,355 INFO L225 Difference]: With dead ends: 30121 [2021-11-05 18:23:02,355 INFO L226 Difference]: Without dead ends: 22428 [2021-11-05 18:23:02,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:23:02,375 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 8334 mSDsluCounter, 9840 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8334 SdHoareTripleChecker+Valid, 14808 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.26ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.43ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:02,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8334 Valid, 14808 Invalid, 47 Unknown, 0 Unchecked, 19.26ms Time], IncrementalHoareTripleChecker [24 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 96.43ms Time] [2021-11-05 18:23:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22428 states. [2021-11-05 18:23:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22428 to 7758. [2021-11-05 18:23:02,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 7756 states have (on average 1.462351727694688) internal successors, (11342), 7757 states have internal predecessors, (11342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 11342 transitions. [2021-11-05 18:23:02,739 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 11342 transitions. Word has length 149 [2021-11-05 18:23:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:02,739 INFO L470 AbstractCegarLoop]: Abstraction has 7758 states and 11342 transitions. [2021-11-05 18:23:02,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 11342 transitions. [2021-11-05 18:23:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 18:23:02,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:02,747 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:02,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 18:23:02,747 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1329186096, now seen corresponding path program 1 times [2021-11-05 18:23:02,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:02,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125245345] [2021-11-05 18:23:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:02,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:02,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:02,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125245345] [2021-11-05 18:23:02,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125245345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:02,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:02,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:23:02,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065069904] [2021-11-05 18:23:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:02,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:23:02,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:23:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:23:02,966 INFO L87 Difference]: Start difference. First operand 7758 states and 11342 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:03,634 INFO L93 Difference]: Finished difference Result 33734 states and 49163 transitions. [2021-11-05 18:23:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:23:03,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 168 [2021-11-05 18:23:03,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:03,683 INFO L225 Difference]: With dead ends: 33734 [2021-11-05 18:23:03,683 INFO L226 Difference]: Without dead ends: 26033 [2021-11-05 18:23:03,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:23:03,701 INFO L933 BasicCegarLoop]: 5088 mSDtfsCounter, 8642 mSDsluCounter, 10058 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8642 SdHoareTripleChecker+Valid, 15146 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.58ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.50ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:03,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8642 Valid, 15146 Invalid, 14 Unknown, 0 Unchecked, 19.58ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 34.50ms Time] [2021-11-05 18:23:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2021-11-05 18:23:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 7766. [2021-11-05 18:23:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7764 states have (on average 1.4618753219989695) internal successors, (11350), 7765 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 11350 transitions. [2021-11-05 18:23:04,017 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 11350 transitions. Word has length 168 [2021-11-05 18:23:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:04,018 INFO L470 AbstractCegarLoop]: Abstraction has 7766 states and 11350 transitions. [2021-11-05 18:23:04,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 11350 transitions. [2021-11-05 18:23:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-05 18:23:04,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:04,025 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:04,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 18:23:04,026 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -506384738, now seen corresponding path program 1 times [2021-11-05 18:23:04,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:04,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609522688] [2021-11-05 18:23:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:04,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:04,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:04,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609522688] [2021-11-05 18:23:04,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609522688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:04,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:04,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:23:04,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069360691] [2021-11-05 18:23:04,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:04,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:23:04,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:04,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:23:04,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:04,245 INFO L87 Difference]: Start difference. First operand 7766 states and 11350 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:04,641 INFO L93 Difference]: Finished difference Result 23176 states and 33906 transitions. [2021-11-05 18:23:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:23:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-05 18:23:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:04,673 INFO L225 Difference]: With dead ends: 23176 [2021-11-05 18:23:04,673 INFO L226 Difference]: Without dead ends: 15467 [2021-11-05 18:23:04,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:04,689 INFO L933 BasicCegarLoop]: 5141 mSDtfsCounter, 2778 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 7980 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.43ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:04,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 7980 Invalid, 4 Unknown, 0 Unchecked, 8.51ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 11.43ms Time] [2021-11-05 18:23:04,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2021-11-05 18:23:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 7906. [2021-11-05 18:23:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7906 states, 7904 states have (on average 1.4597672064777327) internal successors, (11538), 7905 states have internal predecessors, (11538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11538 transitions. [2021-11-05 18:23:04,992 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11538 transitions. Word has length 169 [2021-11-05 18:23:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:04,992 INFO L470 AbstractCegarLoop]: Abstraction has 7906 states and 11538 transitions. [2021-11-05 18:23:04,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11538 transitions. [2021-11-05 18:23:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-05 18:23:05,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:05,000 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:05,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 18:23:05,001 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2039693538, now seen corresponding path program 1 times [2021-11-05 18:23:05,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:05,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936896218] [2021-11-05 18:23:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:05,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:05,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:05,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936896218] [2021-11-05 18:23:05,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936896218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:05,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:05,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:23:05,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215104088] [2021-11-05 18:23:05,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:05,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:23:05,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:23:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:23:05,251 INFO L87 Difference]: Start difference. First operand 7906 states and 11538 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:06,228 INFO L93 Difference]: Finished difference Result 33722 states and 49195 transitions. [2021-11-05 18:23:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:23:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2021-11-05 18:23:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:06,291 INFO L225 Difference]: With dead ends: 33722 [2021-11-05 18:23:06,291 INFO L226 Difference]: Without dead ends: 25873 [2021-11-05 18:23:06,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:23:06,313 INFO L933 BasicCegarLoop]: 7200 mSDtfsCounter, 6434 mSDsluCounter, 9992 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6434 SdHoareTripleChecker+Valid, 17192 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.35ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.68ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:06,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6434 Valid, 17192 Invalid, 32 Unknown, 0 Unchecked, 21.35ms Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 77.68ms Time] [2021-11-05 18:23:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25873 states. [2021-11-05 18:23:06,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25873 to 7914. [2021-11-05 18:23:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7914 states, 7912 states have (on average 1.4593023255813953) internal successors, (11546), 7913 states have internal predecessors, (11546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 11546 transitions. [2021-11-05 18:23:06,721 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 11546 transitions. Word has length 170 [2021-11-05 18:23:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:06,722 INFO L470 AbstractCegarLoop]: Abstraction has 7914 states and 11546 transitions. [2021-11-05 18:23:06,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 11546 transitions. [2021-11-05 18:23:06,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-05 18:23:06,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:06,730 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:06,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 18:23:06,731 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash 820029928, now seen corresponding path program 1 times [2021-11-05 18:23:06,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:06,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059006040] [2021-11-05 18:23:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:06,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:07,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:07,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059006040] [2021-11-05 18:23:07,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059006040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:23:07,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550400150] [2021-11-05 18:23:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:07,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:23:07,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:23:07,012 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) [2021-11-05 18:23:07,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 18:23:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:07,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 3527 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 18:23:08,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:23:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:08,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:23:08,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550400150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:08,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:23:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-05 18:23:08,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199217215] [2021-11-05 18:23:08,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:08,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:23:08,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:23:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 18:23:08,447 INFO L87 Difference]: Start difference. First operand 7914 states and 11546 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:08,989 INFO L93 Difference]: Finished difference Result 23632 states and 34518 transitions. [2021-11-05 18:23:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:23:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-05 18:23:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:09,022 INFO L225 Difference]: With dead ends: 23632 [2021-11-05 18:23:09,022 INFO L226 Difference]: Without dead ends: 15775 [2021-11-05 18:23:09,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.78ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:23:09,041 INFO L933 BasicCegarLoop]: 5133 mSDtfsCounter, 2777 mSDsluCounter, 7973 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 13106 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.30ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.12ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:09,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2777 Valid, 13106 Invalid, 18 Unknown, 0 Unchecked, 13.30ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 41.12ms Time] [2021-11-05 18:23:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2021-11-05 18:23:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 8202. [2021-11-05 18:23:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8202 states, 8200 states have (on average 1.4553658536585365) internal successors, (11934), 8201 states have internal predecessors, (11934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 11934 transitions. [2021-11-05 18:23:09,421 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 11934 transitions. Word has length 171 [2021-11-05 18:23:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:09,421 INFO L470 AbstractCegarLoop]: Abstraction has 8202 states and 11934 transitions. [2021-11-05 18:23:09,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 11934 transitions. [2021-11-05 18:23:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-05 18:23:09,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:09,429 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:09,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 18:23:09,647 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,SelfDestructingSolverStorable12 [2021-11-05 18:23:09,648 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1229357914, now seen corresponding path program 1 times [2021-11-05 18:23:09,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:09,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204994817] [2021-11-05 18:23:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:09,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:09,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:09,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204994817] [2021-11-05 18:23:09,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204994817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:23:09,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113423750] [2021-11-05 18:23:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:09,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:23:09,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:23:09,885 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) [2021-11-05 18:23:09,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 18:23:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:10,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:23:10,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:23:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:11,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:23:11,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113423750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:11,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:23:11,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-05 18:23:11,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542692770] [2021-11-05 18:23:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:11,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:23:11,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:23:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:23:11,340 INFO L87 Difference]: Start difference. First operand 8202 states and 11934 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:13,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:23:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:14,180 INFO L93 Difference]: Finished difference Result 24497 states and 35678 transitions. [2021-11-05 18:23:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 18:23:14,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-05 18:23:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:14,227 INFO L225 Difference]: With dead ends: 24497 [2021-11-05 18:23:14,228 INFO L226 Difference]: Without dead ends: 24490 [2021-11-05 18:23:14,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:23:14,238 INFO L933 BasicCegarLoop]: 5612 mSDtfsCounter, 5515 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2102.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5515 SdHoareTripleChecker+Valid, 11225 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.95ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2204.84ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:14,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5515 Valid, 11225 Invalid, 34 Unknown, 0 Unchecked, 10.95ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2204.84ms Time] [2021-11-05 18:23:14,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24490 states. [2021-11-05 18:23:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24490 to 24250. [2021-11-05 18:23:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24250 states, 24248 states have (on average 1.4593368525239194) internal successors, (35386), 24249 states have internal predecessors, (35386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24250 states to 24250 states and 35386 transitions. [2021-11-05 18:23:15,108 INFO L78 Accepts]: Start accepts. Automaton has 24250 states and 35386 transitions. Word has length 171 [2021-11-05 18:23:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:15,108 INFO L470 AbstractCegarLoop]: Abstraction has 24250 states and 35386 transitions. [2021-11-05 18:23:15,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 24250 states and 35386 transitions. [2021-11-05 18:23:15,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-05 18:23:15,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:15,129 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:15,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 18:23:15,355 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,SelfDestructingSolverStorable13 [2021-11-05 18:23:15,355 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1816163928, now seen corresponding path program 1 times [2021-11-05 18:23:15,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:15,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237783785] [2021-11-05 18:23:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:15,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:15,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:15,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237783785] [2021-11-05 18:23:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237783785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:15,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:23:15,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896303123] [2021-11-05 18:23:15,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:23:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:23:15,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:23:15,564 INFO L87 Difference]: Start difference. First operand 24250 states and 35386 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:17,277 INFO L93 Difference]: Finished difference Result 69103 states and 100865 transitions. [2021-11-05 18:23:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 18:23:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-05 18:23:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:17,389 INFO L225 Difference]: With dead ends: 69103 [2021-11-05 18:23:17,390 INFO L226 Difference]: Without dead ends: 56975 [2021-11-05 18:23:17,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:23:17,424 INFO L933 BasicCegarLoop]: 4903 mSDtfsCounter, 4909 mSDsluCounter, 5623 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4909 SdHoareTripleChecker+Valid, 10526 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.37ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.81ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:17,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4909 Valid, 10526 Invalid, 18 Unknown, 0 Unchecked, 11.37ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 102.81ms Time] [2021-11-05 18:23:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56975 states. [2021-11-05 18:23:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56975 to 24254. [2021-11-05 18:23:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24254 states, 24252 states have (on average 1.459261091868712) internal successors, (35390), 24253 states have internal predecessors, (35390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24254 states to 24254 states and 35390 transitions. [2021-11-05 18:23:18,561 INFO L78 Accepts]: Start accepts. Automaton has 24254 states and 35390 transitions. Word has length 171 [2021-11-05 18:23:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:18,562 INFO L470 AbstractCegarLoop]: Abstraction has 24254 states and 35390 transitions. [2021-11-05 18:23:18,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 24254 states and 35390 transitions. [2021-11-05 18:23:18,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-05 18:23:18,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:18,582 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:18,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 18:23:18,582 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash 268260612, now seen corresponding path program 1 times [2021-11-05 18:23:18,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:18,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899182895] [2021-11-05 18:23:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:18,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:23:18,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:18,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899182895] [2021-11-05 18:23:18,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899182895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:18,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:18,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:23:18,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077025941] [2021-11-05 18:23:18,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:18,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:23:18,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:23:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:18,974 INFO L87 Difference]: Start difference. First operand 24254 states and 35390 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:23:20,666 INFO L93 Difference]: Finished difference Result 72648 states and 106042 transitions. [2021-11-05 18:23:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:23:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-05 18:23:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:23:20,747 INFO L225 Difference]: With dead ends: 72648 [2021-11-05 18:23:20,748 INFO L226 Difference]: Without dead ends: 48451 [2021-11-05 18:23:20,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:23:20,780 INFO L933 BasicCegarLoop]: 4898 mSDtfsCounter, 2780 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.73ms IncrementalHoareTripleChecker+Time [2021-11-05 18:23:20,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 7740 Invalid, 7 Unknown, 0 Unchecked, 7.50ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 19.73ms Time] [2021-11-05 18:23:20,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48451 states. [2021-11-05 18:23:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48451 to 24266. [2021-11-05 18:23:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24266 states, 24264 states have (on average 1.4590339597757995) internal successors, (35402), 24265 states have internal predecessors, (35402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24266 states to 24266 states and 35402 transitions. [2021-11-05 18:23:21,963 INFO L78 Accepts]: Start accepts. Automaton has 24266 states and 35402 transitions. Word has length 172 [2021-11-05 18:23:21,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:23:21,963 INFO L470 AbstractCegarLoop]: Abstraction has 24266 states and 35402 transitions. [2021-11-05 18:23:21,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 24266 states and 35402 transitions. [2021-11-05 18:23:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-05 18:23:21,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:23:21,982 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:23:21,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 18:23:21,982 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:23:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:23:21,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1290477699, now seen corresponding path program 1 times [2021-11-05 18:23:21,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:23:21,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410102999] [2021-11-05 18:23:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:23:21,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:23:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:23:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:23:22,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:23:22,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410102999] [2021-11-05 18:23:22,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410102999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:23:22,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:23:22,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 18:23:22,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467476248] [2021-11-05 18:23:22,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:23:22,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 18:23:22,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:23:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 18:23:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-05 18:23:22,822 INFO L87 Difference]: Start difference. First operand 24266 states and 35402 transitions. Second operand has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:23:24,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:23:27,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:23:30,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:23:36,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:23:44,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:23:52,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:04,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:05,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:24:06,196 INFO L93 Difference]: Finished difference Result 115419 states and 168539 transitions. [2021-11-05 18:24:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-05 18:24:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2021-11-05 18:24:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:24:06,407 INFO L225 Difference]: With dead ends: 115419 [2021-11-05 18:24:06,407 INFO L226 Difference]: Without dead ends: 103263 [2021-11-05 18:24:06,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1364.46ms TimeCoverageRelationStatistics Valid=635, Invalid=1527, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 18:24:06,452 INFO L933 BasicCegarLoop]: 9487 mSDtfsCounter, 38326 mSDsluCounter, 58775 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 107 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35893.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38326 SdHoareTripleChecker+Valid, 68262 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.13ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37653.95ms IncrementalHoareTripleChecker+Time [2021-11-05 18:24:06,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38326 Valid, 68262 Invalid, 3846 Unknown, 0 Unchecked, 105.13ms Time], IncrementalHoareTripleChecker [107 Valid, 3737 Invalid, 2 Unknown, 0 Unchecked, 37653.95ms Time] [2021-11-05 18:24:06,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103263 states. [2021-11-05 18:24:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103263 to 30614. [2021-11-05 18:24:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30614 states, 30612 states have (on average 1.4638050437736836) internal successors, (44810), 30613 states have internal predecessors, (44810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30614 states to 30614 states and 44810 transitions. [2021-11-05 18:24:08,463 INFO L78 Accepts]: Start accepts. Automaton has 30614 states and 44810 transitions. Word has length 174 [2021-11-05 18:24:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:24:08,463 INFO L470 AbstractCegarLoop]: Abstraction has 30614 states and 44810 transitions. [2021-11-05 18:24:08,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 30614 states and 44810 transitions. [2021-11-05 18:24:08,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-05 18:24:08,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:24:08,481 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:24:08,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 18:24:08,481 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:24:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:24:08,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1081261563, now seen corresponding path program 1 times [2021-11-05 18:24:08,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:24:08,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957681467] [2021-11-05 18:24:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:24:08,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:24:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:24:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:24:09,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:24:09,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957681467] [2021-11-05 18:24:09,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957681467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:24:09,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:24:09,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 18:24:09,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742683026] [2021-11-05 18:24:09,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:24:09,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 18:24:09,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:24:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 18:24:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:24:09,166 INFO L87 Difference]: Start difference. First operand 30614 states and 44810 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:24:15,130 INFO L93 Difference]: Finished difference Result 119986 states and 175364 transitions. [2021-11-05 18:24:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 18:24:15,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 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 174 [2021-11-05 18:24:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:24:15,283 INFO L225 Difference]: With dead ends: 119986 [2021-11-05 18:24:15,283 INFO L226 Difference]: Without dead ends: 89429 [2021-11-05 18:24:15,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 552.12ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-05 18:24:15,322 INFO L933 BasicCegarLoop]: 5624 mSDtfsCounter, 28405 mSDsluCounter, 28144 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28405 SdHoareTripleChecker+Valid, 33768 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 209.97ms IncrementalHoareTripleChecker+Time [2021-11-05 18:24:15,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28405 Valid, 33768 Invalid, 82 Unknown, 0 Unchecked, 33.65ms Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 209.97ms Time] [2021-11-05 18:24:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89429 states. [2021-11-05 18:24:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89429 to 30662. [2021-11-05 18:24:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30662 states, 30660 states have (on average 1.4630789302022178) internal successors, (44858), 30661 states have internal predecessors, (44858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30662 states to 30662 states and 44858 transitions. [2021-11-05 18:24:17,511 INFO L78 Accepts]: Start accepts. Automaton has 30662 states and 44858 transitions. Word has length 174 [2021-11-05 18:24:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:24:17,511 INFO L470 AbstractCegarLoop]: Abstraction has 30662 states and 44858 transitions. [2021-11-05 18:24:17,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 30662 states and 44858 transitions. [2021-11-05 18:24:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-05 18:24:17,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:24:17,529 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:24:17,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 18:24:17,529 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:24:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:24:17,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1489016868, now seen corresponding path program 1 times [2021-11-05 18:24:17,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:24:17,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594292277] [2021-11-05 18:24:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:24:17,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:24:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:24:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:24:18,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:24:18,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594292277] [2021-11-05 18:24:18,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594292277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:24:18,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:24:18,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 18:24:18,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752346297] [2021-11-05 18:24:18,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:24:18,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 18:24:18,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:24:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 18:24:18,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 18:24:18,037 INFO L87 Difference]: Start difference. First operand 30662 states and 44858 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:24:24,485 INFO L93 Difference]: Finished difference Result 113734 states and 166052 transitions. [2021-11-05 18:24:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 18:24:24,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 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 180 [2021-11-05 18:24:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:24:24,630 INFO L225 Difference]: With dead ends: 113734 [2021-11-05 18:24:24,630 INFO L226 Difference]: Without dead ends: 83129 [2021-11-05 18:24:24,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 425.22ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-05 18:24:24,673 INFO L933 BasicCegarLoop]: 5631 mSDtfsCounter, 28405 mSDsluCounter, 28147 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28405 SdHoareTripleChecker+Valid, 33778 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 154.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176.51ms IncrementalHoareTripleChecker+Time [2021-11-05 18:24:24,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28405 Valid, 33778 Invalid, 84 Unknown, 0 Unchecked, 154.80ms Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 176.51ms Time] [2021-11-05 18:24:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83129 states. [2021-11-05 18:24:26,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83129 to 24314. [2021-11-05 18:24:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24314 states, 24312 states have (on average 1.4581276735768345) internal successors, (35450), 24313 states have internal predecessors, (35450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24314 states to 24314 states and 35450 transitions. [2021-11-05 18:24:27,000 INFO L78 Accepts]: Start accepts. Automaton has 24314 states and 35450 transitions. Word has length 180 [2021-11-05 18:24:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:24:27,001 INFO L470 AbstractCegarLoop]: Abstraction has 24314 states and 35450 transitions. [2021-11-05 18:24:27,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 24314 states and 35450 transitions. [2021-11-05 18:24:27,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-05 18:24:27,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:24:27,017 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:24:27,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 18:24:27,018 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:24:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:24:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1562730988, now seen corresponding path program 1 times [2021-11-05 18:24:27,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:24:27,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640545867] [2021-11-05 18:24:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:24:27,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:24:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:24:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:24:27,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:24:27,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640545867] [2021-11-05 18:24:27,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640545867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:24:27,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:24:27,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 18:24:27,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638184780] [2021-11-05 18:24:27,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:24:27,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 18:24:27,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:24:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 18:24:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:24:27,435 INFO L87 Difference]: Start difference. First operand 24314 states and 35450 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:34,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:24:34,773 INFO L93 Difference]: Finished difference Result 105742 states and 154232 transitions. [2021-11-05 18:24:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:24:34,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 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 180 [2021-11-05 18:24:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:24:34,903 INFO L225 Difference]: With dead ends: 105742 [2021-11-05 18:24:34,903 INFO L226 Difference]: Without dead ends: 81485 [2021-11-05 18:24:34,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 234.13ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-05 18:24:34,941 INFO L933 BasicCegarLoop]: 5431 mSDtfsCounter, 21415 mSDsluCounter, 24533 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21415 SdHoareTripleChecker+Valid, 29964 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 293.27ms IncrementalHoareTripleChecker+Time [2021-11-05 18:24:34,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21415 Valid, 29964 Invalid, 45 Unknown, 0 Unchecked, 26.80ms Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 293.27ms Time] [2021-11-05 18:24:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81485 states. [2021-11-05 18:24:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81485 to 24374. [2021-11-05 18:24:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24374 states, 24372 states have (on average 1.4569998358772362) internal successors, (35510), 24373 states have internal predecessors, (35510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24374 states to 24374 states and 35510 transitions. [2021-11-05 18:24:37,447 INFO L78 Accepts]: Start accepts. Automaton has 24374 states and 35510 transitions. Word has length 180 [2021-11-05 18:24:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:24:37,448 INFO L470 AbstractCegarLoop]: Abstraction has 24374 states and 35510 transitions. [2021-11-05 18:24:37,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24374 states and 35510 transitions. [2021-11-05 18:24:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-05 18:24:37,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:24:37,461 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:24:37,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 18:24:37,461 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:24:37,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:24:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1597851652, now seen corresponding path program 1 times [2021-11-05 18:24:37,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:24:37,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827324344] [2021-11-05 18:24:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:24:37,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:24:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:24:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:24:37,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:24:37,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827324344] [2021-11-05 18:24:37,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827324344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:24:37,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:24:37,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 18:24:37,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136787037] [2021-11-05 18:24:37,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:24:37,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 18:24:37,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:24:37,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 18:24:37,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-05 18:24:37,992 INFO L87 Difference]: Start difference. First operand 24374 states and 35510 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:24:40,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:42,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:44,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:46,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:50,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:52,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:55,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:24:59,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:06,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:08,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:12,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:25:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:25:18,482 INFO L93 Difference]: Finished difference Result 36912 states and 53757 transitions. [2021-11-05 18:25:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 18:25:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 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 186 [2021-11-05 18:25:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:25:18,521 INFO L225 Difference]: With dead ends: 36912 [2021-11-05 18:25:18,521 INFO L226 Difference]: Without dead ends: 24702 [2021-11-05 18:25:18,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 334.09ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-05 18:25:18,541 INFO L933 BasicCegarLoop]: 2834 mSDtfsCounter, 68 mSDsluCounter, 12091 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36256.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 14925 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.92ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38243.90ms IncrementalHoareTripleChecker+Time [2021-11-05 18:25:18,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 14925 Invalid, 2157 Unknown, 0 Unchecked, 23.92ms Time], IncrementalHoareTripleChecker [7 Valid, 2144 Invalid, 6 Unknown, 0 Unchecked, 38243.90ms Time] [2021-11-05 18:25:18,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24702 states. [2021-11-05 18:25:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24702 to 24566. [2021-11-05 18:25:20,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24566 states, 24564 states have (on average 1.457335938772187) internal successors, (35798), 24565 states have internal predecessors, (35798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24566 states to 24566 states and 35798 transitions. [2021-11-05 18:25:20,760 INFO L78 Accepts]: Start accepts. Automaton has 24566 states and 35798 transitions. Word has length 186 [2021-11-05 18:25:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:25:20,761 INFO L470 AbstractCegarLoop]: Abstraction has 24566 states and 35798 transitions. [2021-11-05 18:25:20,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 24566 states and 35798 transitions. [2021-11-05 18:25:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-05 18:25:20,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:25:20,774 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:25:20,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 18:25:20,774 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:25:20,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:25:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 325376382, now seen corresponding path program 1 times [2021-11-05 18:25:20,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:25:20,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079056029] [2021-11-05 18:25:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:25:20,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:25:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:25:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:25:22,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:25:22,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079056029] [2021-11-05 18:25:22,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079056029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:25:22,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:25:22,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 18:25:22,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976583488] [2021-11-05 18:25:22,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:25:22,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 18:25:22,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:25:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 18:25:22,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:25:22,386 INFO L87 Difference]: Start difference. First operand 24566 states and 35798 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:25:26,356 INFO L93 Difference]: Finished difference Result 66456 states and 96881 transitions. [2021-11-05 18:25:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 18:25:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 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 186 [2021-11-05 18:25:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:25:26,425 INFO L225 Difference]: With dead ends: 66456 [2021-11-05 18:25:26,426 INFO L226 Difference]: Without dead ends: 41947 [2021-11-05 18:25:26,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.98ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 18:25:26,451 INFO L933 BasicCegarLoop]: 4924 mSDtfsCounter, 2770 mSDsluCounter, 4928 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2770 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.68ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 212.37ms IncrementalHoareTripleChecker+Time [2021-11-05 18:25:26,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2770 Valid, 9852 Invalid, 14 Unknown, 0 Unchecked, 6.68ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 212.37ms Time] [2021-11-05 18:25:26,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41947 states. [2021-11-05 18:25:28,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41947 to 24578. [2021-11-05 18:25:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24578 states, 24576 states have (on average 1.4571126302083333) internal successors, (35810), 24577 states have internal predecessors, (35810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24578 states to 24578 states and 35810 transitions. [2021-11-05 18:25:28,863 INFO L78 Accepts]: Start accepts. Automaton has 24578 states and 35810 transitions. Word has length 186 [2021-11-05 18:25:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:25:28,863 INFO L470 AbstractCegarLoop]: Abstraction has 24578 states and 35810 transitions. [2021-11-05 18:25:28,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 24578 states and 35810 transitions. [2021-11-05 18:25:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-05 18:25:28,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:25:28,877 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:25:28,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 18:25:28,878 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:25:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:25:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash 95619828, now seen corresponding path program 1 times [2021-11-05 18:25:28,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:25:28,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713124496] [2021-11-05 18:25:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:25:28,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:25:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:25:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 18:25:30,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:25:30,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713124496] [2021-11-05 18:25:30,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713124496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:25:30,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:25:30,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:25:30,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400361054] [2021-11-05 18:25:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:25:30,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:25:30,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:25:30,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:25:30,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:25:30,107 INFO L87 Difference]: Start difference. First operand 24578 states and 35810 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:25:32,361 INFO L93 Difference]: Finished difference Result 49126 states and 71595 transitions. [2021-11-05 18:25:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:25:32,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-11-05 18:25:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:25:32,401 INFO L225 Difference]: With dead ends: 49126 [2021-11-05 18:25:32,401 INFO L226 Difference]: Without dead ends: 24584 [2021-11-05 18:25:32,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:25:32,428 INFO L933 BasicCegarLoop]: 2841 mSDtfsCounter, 0 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5643 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174.97ms IncrementalHoareTripleChecker+Time [2021-11-05 18:25:32,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5643 Invalid, 55 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 174.97ms Time] [2021-11-05 18:25:32,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24584 states. [2021-11-05 18:25:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24584 to 24584. [2021-11-05 18:25:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24584 states, 24582 states have (on average 1.4570010576844845) internal successors, (35816), 24583 states have internal predecessors, (35816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 35816 transitions. [2021-11-05 18:25:34,644 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 35816 transitions. Word has length 189 [2021-11-05 18:25:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:25:34,644 INFO L470 AbstractCegarLoop]: Abstraction has 24584 states and 35816 transitions. [2021-11-05 18:25:34,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:25:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 35816 transitions. [2021-11-05 18:25:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-05 18:25:34,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:25:34,657 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:25:34,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 18:25:34,658 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 18:25:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:25:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1000950408, now seen corresponding path program 1 times [2021-11-05 18:25:34,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:25:34,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143716562] [2021-11-05 18:25:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:25:34,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:25:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:25:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 18:25:36,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:25:36,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143716562] [2021-11-05 18:25:36,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143716562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:25:36,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113611267] [2021-11-05 18:25:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:25:36,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:25:36,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:25:36,432 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) [2021-11-05 18:25:36,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 18:25:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:25:37,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3674 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-05 18:25:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:25:37,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 18:25:38,370 INFO L354 Elim1Store]: treesize reduction 164, result has 11.4 percent of original size [2021-11-05 18:25:38,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 38 [2021-11-05 18:25:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 18:25:39,011 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-05 18:25:39,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 14 [2021-11-05 18:26:24,343 WARN L230 SmtUtils]: Spent 44.53s on a formula simplification. DAG size of input: 30 DAG size of output: 13 [2021-11-05 18:26:24,344 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-05 18:26:24,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 5581 treesize of output 5570 [2021-11-05 18:30:34,469 WARN L230 SmtUtils]: Spent 4.17m on a formula simplification. DAG size of input: 198 DAG size of output: 43 [2021-11-05 18:30:34,469 INFO L354 Elim1Store]: treesize reduction 1440, result has 4.7 percent of original size [2021-11-05 18:30:34,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 5528 treesize of output 5541 [2021-11-05 18:33:33,476 WARN L230 SmtUtils]: Spent 2.98m on a formula simplification. DAG size of input: 160 DAG size of output: 38 [2021-11-05 18:33:33,477 INFO L354 Elim1Store]: treesize reduction 1018, result has 5.7 percent of original size [2021-11-05 18:33:33,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 5485 treesize of output 5492