./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-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.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 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:07:32,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:07:32,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:07:32,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:07:32,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:07:32,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:07:32,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:07:32,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:07:32,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:07:32,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:07:32,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:07:32,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:07:32,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:07:32,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:07:32,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:07:32,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:07:32,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:07:32,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:07:32,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:07:32,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:07:32,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:07:32,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:07:32,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:07:32,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:07:32,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:07:32,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:07:32,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:07:32,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:07:32,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:07:32,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:07:32,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:07:32,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:07:32,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:07:32,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:07:32,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:07:32,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:07:32,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:07:32,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:07:32,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:07:32,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:07:32,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:07:32,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:07:32,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:07:32,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:07:32,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:07:32,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:07:32,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:07:32,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:07:32,240 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:07:32,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:07:32,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:07:32,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:07:32,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:07:32,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:07:32,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:07:32,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:07:32,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:07:32,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:07:32,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:07:32,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:07:32,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:07:32,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:07:32,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:07:32,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:07:32,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:07:32,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:07:32,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:07:32,243 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:07:32,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:07:32,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:07:32,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:07:32,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 [2021-11-07 16:07:32,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:07:32,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:07:32,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:07:32,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:07:32,447 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:07:32,448 INFO L432 ainManager$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-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-11-07 16:07:32,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6028418/21192831f6f9480d84078636d2f8bc80/FLAGb766fd279 [2021-11-07 16:07:33,049 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:07:33,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-11-07 16:07:33,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6028418/21192831f6f9480d84078636d2f8bc80/FLAGb766fd279 [2021-11-07 16:07:33,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e6028418/21192831f6f9480d84078636d2f8bc80 [2021-11-07 16:07:33,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:07:33,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:07:33,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:07:33,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:07:33,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:07:33,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:33" (1/1) ... [2021-11-07 16:07:33,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc8c8a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33, skipping insertion in model container [2021-11-07 16:07:33,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:33" (1/1) ... [2021-11-07 16:07:33,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:07:33,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:07:34,367 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-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2021-11-07 16:07:34,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:07:34,409 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:07:34,583 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-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2021-11-07 16:07:34,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:07:34,625 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:07:34,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34 WrapperNode [2021-11-07 16:07:34,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:07:34,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:07:34,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:07:34,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:07:34,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:34,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:07:35,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:07:35,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:07:35,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:07:35,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:07:35,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:07:35,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:07:35,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:07:35,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (1/1) ... [2021-11-07 16:07:35,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:07:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:07:35,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 16:07:35,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 16:07:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:07:35,764 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 16:07:35,765 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 16:07:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 16:07:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:07:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:07:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:07:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:07:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 16:07:35,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 16:07:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:07:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2021-11-07 16:07:35,766 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2021-11-07 16:07:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:07:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:07:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 16:07:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 16:07:35,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 16:07:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:07:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 16:07:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:07:35,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:07:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:07:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:07:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:07:35,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:07:46,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:07:46,175 INFO L299 CfgBuilder]: Removed 3524 assume(true) statements. [2021-11-07 16:07:46,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:46 BoogieIcfgContainer [2021-11-07 16:07:46,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:07:46,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:07:46,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:07:46,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:07:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:07:33" (1/3) ... [2021-11-07 16:07:46,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29b059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:46, skipping insertion in model container [2021-11-07 16:07:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:34" (2/3) ... [2021-11-07 16:07:46,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e29b059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:46, skipping insertion in model container [2021-11-07 16:07:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:46" (3/3) ... [2021-11-07 16:07:46,186 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-11-07 16:07:46,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:07:46,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 16:07:46,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:07:46,239 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 16:07:46,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 16:07:46,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 3676 states, 3662 states have (on average 1.4412889131622064) internal successors, (5278), 3666 states have internal predecessors, (5278), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 16:07:46,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:46,292 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] [2021-11-07 16:07:46,292 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash -792164640, now seen corresponding path program 1 times [2021-11-07 16:07:46,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:46,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674718519] [2021-11-07 16:07:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:46,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:07:46,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:46,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674718519] [2021-11-07 16:07:46,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674718519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:46,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:46,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:07:46,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067804887] [2021-11-07 16:07:46,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:46,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:07:46,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:46,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:07:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:07:46,716 INFO L87 Difference]: Start difference. First operand has 3676 states, 3662 states have (on average 1.4412889131622064) internal successors, (5278), 3666 states have internal predecessors, (5278), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:46,848 INFO L93 Difference]: Finished difference Result 7348 states and 10581 transitions. [2021-11-07 16:07:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:07:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 16:07:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:46,867 INFO L225 Difference]: With dead ends: 7348 [2021-11-07 16:07:46,868 INFO L226 Difference]: Without dead ends: 2283 [2021-11-07 16:07:46,883 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 [2021-11-07 16:07:46,889 INFO L933 BasicCegarLoop]: 5193 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, 5193 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:46,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5193 Invalid, 0 Unknown, 0 Unchecked, 11.08ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:07:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-11-07 16:07:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2283. [2021-11-07 16:07:46,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2270 states have (on average 1.411013215859031) internal successors, (3203), 2273 states have internal predecessors, (3203), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3215 transitions. [2021-11-07 16:07:47,005 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3215 transitions. Word has length 30 [2021-11-07 16:07:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:47,005 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3215 transitions. [2021-11-07 16:07:47,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3215 transitions. [2021-11-07 16:07:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 16:07:47,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:47,008 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] [2021-11-07 16:07:47,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:07:47,009 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -557880348, now seen corresponding path program 1 times [2021-11-07 16:07:47,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:47,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314060732] [2021-11-07 16:07:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:47,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:07:47,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:47,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314060732] [2021-11-07 16:07:47,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314060732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:47,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:47,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:07:47,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190512442] [2021-11-07 16:07:47,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:47,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:07:47,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:07:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:47,189 INFO L87 Difference]: Start difference. First operand 2283 states and 3215 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:47,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:47,371 INFO L93 Difference]: Finished difference Result 4923 states and 6947 transitions. [2021-11-07 16:07:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:07:47,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 16:07:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:47,385 INFO L225 Difference]: With dead ends: 4923 [2021-11-07 16:07:47,386 INFO L226 Difference]: Without dead ends: 2659 [2021-11-07 16:07:47,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:47,398 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 549 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 6383 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.77ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:47,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 6383 Invalid, 28 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 92.77ms Time] [2021-11-07 16:07:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-11-07 16:07:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2658. [2021-11-07 16:07:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2645 states have (on average 1.4132325141776938) internal successors, (3738), 2648 states have internal predecessors, (3738), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3750 transitions. [2021-11-07 16:07:47,461 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3750 transitions. Word has length 30 [2021-11-07 16:07:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:47,462 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 3750 transitions. [2021-11-07 16:07:47,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3750 transitions. [2021-11-07 16:07:47,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 16:07:47,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:47,473 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] [2021-11-07 16:07:47,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:07:47,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:47,474 INFO L85 PathProgramCache]: Analyzing trace with hash 889001481, now seen corresponding path program 1 times [2021-11-07 16:07:47,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:47,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713238907] [2021-11-07 16:07:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:47,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:07:47,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:47,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713238907] [2021-11-07 16:07:47,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713238907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:47,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:47,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:07:47,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115036121] [2021-11-07 16:07:47,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:47,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:07:47,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:47,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:07:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:07:47,669 INFO L87 Difference]: Start difference. First operand 2658 states and 3750 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:47,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:47,868 INFO L93 Difference]: Finished difference Result 7904 states and 11171 transitions. [2021-11-07 16:07:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:07:47,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-07 16:07:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:47,888 INFO L225 Difference]: With dead ends: 7904 [2021-11-07 16:07:47,888 INFO L226 Difference]: Without dead ends: 5265 [2021-11-07 16:07:47,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.45ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:07:47,899 INFO L933 BasicCegarLoop]: 4273 mSDtfsCounter, 4741 mSDsluCounter, 12248 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4743 SdHoareTripleChecker+Valid, 16521 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.67ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.12ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:47,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4743 Valid, 16521 Invalid, 35 Unknown, 0 Unchecked, 20.67ms Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 33.12ms Time] [2021-11-07 16:07:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-11-07 16:07:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 2661. [2021-11-07 16:07:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2648 states have (on average 1.4127643504531722) internal successors, (3741), 2651 states have internal predecessors, (3741), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 3753 transitions. [2021-11-07 16:07:47,975 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 3753 transitions. Word has length 50 [2021-11-07 16:07:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:47,977 INFO L470 AbstractCegarLoop]: Abstraction has 2661 states and 3753 transitions. [2021-11-07 16:07:47,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:47,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 3753 transitions. [2021-11-07 16:07:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 16:07:47,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:47,979 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] [2021-11-07 16:07:47,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:07:47,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:47,981 INFO L85 PathProgramCache]: Analyzing trace with hash 432522714, now seen corresponding path program 1 times [2021-11-07 16:07:47,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:47,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468927469] [2021-11-07 16:07:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:47,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:48,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:48,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468927469] [2021-11-07 16:07:48,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468927469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:48,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:48,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:07:48,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196287749] [2021-11-07 16:07:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:48,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:07:48,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:07:48,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:48,119 INFO L87 Difference]: Start difference. First operand 2661 states and 3753 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:48,239 INFO L93 Difference]: Finished difference Result 2714 states and 3829 transitions. [2021-11-07 16:07:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:07:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 16:07:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:48,248 INFO L225 Difference]: With dead ends: 2714 [2021-11-07 16:07:48,249 INFO L226 Difference]: Without dead ends: 2710 [2021-11-07 16:07:48,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:48,250 INFO L933 BasicCegarLoop]: 3221 mSDtfsCounter, 2867 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.98ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.32ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:48,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2867 Valid, 3523 Invalid, 55 Unknown, 0 Unchecked, 4.98ms Time], IncrementalHoareTripleChecker [26 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 76.32ms Time] [2021-11-07 16:07:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-11-07 16:07:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2657. [2021-11-07 16:07:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2657 states, 2646 states have (on average 1.4123204837490553) internal successors, (3737), 2647 states have internal predecessors, (3737), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3749 transitions. [2021-11-07 16:07:48,300 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3749 transitions. Word has length 51 [2021-11-07 16:07:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:48,301 INFO L470 AbstractCegarLoop]: Abstraction has 2657 states and 3749 transitions. [2021-11-07 16:07:48,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3749 transitions. [2021-11-07 16:07:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 16:07:48,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:48,305 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] [2021-11-07 16:07:48,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:07:48,305 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash 850413282, now seen corresponding path program 1 times [2021-11-07 16:07:48,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:48,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512070113] [2021-11-07 16:07:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:48,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:48,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:48,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512070113] [2021-11-07 16:07:48,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512070113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:48,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:48,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 16:07:48,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156392011] [2021-11-07 16:07:48,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:48,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:07:48,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:48,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:07:48,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:07:48,433 INFO L87 Difference]: Start difference. First operand 2657 states and 3749 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:48,845 INFO L93 Difference]: Finished difference Result 9910 states and 14087 transitions. [2021-11-07 16:07:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 16:07:48,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 16:07:48,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:48,880 INFO L225 Difference]: With dead ends: 9910 [2021-11-07 16:07:48,880 INFO L226 Difference]: Without dead ends: 7272 [2021-11-07 16:07:48,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 68.01ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-07 16:07:48,892 INFO L933 BasicCegarLoop]: 4651 mSDtfsCounter, 9430 mSDsluCounter, 20172 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9430 SdHoareTripleChecker+Valid, 24823 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.89ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.03ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:48,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9430 Valid, 24823 Invalid, 153 Unknown, 0 Unchecked, 27.89ms Time], IncrementalHoareTripleChecker [29 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 138.03ms Time] [2021-11-07 16:07:48,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2021-11-07 16:07:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 2663. [2021-11-07 16:07:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2652 states have (on average 1.4113876319758674) internal successors, (3743), 2653 states have internal predecessors, (3743), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3755 transitions. [2021-11-07 16:07:49,038 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3755 transitions. Word has length 87 [2021-11-07 16:07:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:49,040 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3755 transitions. [2021-11-07 16:07:49,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3755 transitions. [2021-11-07 16:07:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 16:07:49,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:49,045 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] [2021-11-07 16:07:49,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:07:49,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1646447522, now seen corresponding path program 1 times [2021-11-07 16:07:49,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:49,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451904013] [2021-11-07 16:07:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:49,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:49,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:49,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451904013] [2021-11-07 16:07:49,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451904013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:49,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:49,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 16:07:49,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540520009] [2021-11-07 16:07:49,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:49,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:07:49,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:49,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:07:49,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:07:49,192 INFO L87 Difference]: Start difference. First operand 2663 states and 3755 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:49,651 INFO L93 Difference]: Finished difference Result 9929 states and 14106 transitions. [2021-11-07 16:07:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 16:07:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 16:07:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:49,679 INFO L225 Difference]: With dead ends: 9929 [2021-11-07 16:07:49,680 INFO L226 Difference]: Without dead ends: 7285 [2021-11-07 16:07:49,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 68.17ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-07 16:07:49,691 INFO L933 BasicCegarLoop]: 4940 mSDtfsCounter, 8928 mSDsluCounter, 21017 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8928 SdHoareTripleChecker+Valid, 25957 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.98ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.04ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:49,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8928 Valid, 25957 Invalid, 167 Unknown, 0 Unchecked, 21.98ms Time], IncrementalHoareTripleChecker [27 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 141.04ms Time] [2021-11-07 16:07:49,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2021-11-07 16:07:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 2664. [2021-11-07 16:07:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2653 states have (on average 1.4112325669053902) internal successors, (3744), 2654 states have internal predecessors, (3744), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3756 transitions. [2021-11-07 16:07:49,786 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3756 transitions. Word has length 92 [2021-11-07 16:07:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:49,786 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3756 transitions. [2021-11-07 16:07:49,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3756 transitions. [2021-11-07 16:07:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 16:07:49,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:49,790 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] [2021-11-07 16:07:49,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:07:49,790 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:49,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:49,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1708487136, now seen corresponding path program 1 times [2021-11-07 16:07:49,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:49,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788317220] [2021-11-07 16:07:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:49,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:49,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:49,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788317220] [2021-11-07 16:07:49,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788317220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:49,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:49,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:07:49,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714291617] [2021-11-07 16:07:49,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:49,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:07:49,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:07:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:07:49,912 INFO L87 Difference]: Start difference. First operand 2664 states and 3756 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:50,302 INFO L93 Difference]: Finished difference Result 8239 states and 11667 transitions. [2021-11-07 16:07:50,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 16:07:50,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 16:07:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:50,323 INFO L225 Difference]: With dead ends: 8239 [2021-11-07 16:07:50,323 INFO L226 Difference]: Without dead ends: 5594 [2021-11-07 16:07:50,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.12ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:07:50,332 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 3579 mSDsluCounter, 11753 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 16471 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.65ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.53ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:50,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3581 Valid, 16471 Invalid, 110 Unknown, 0 Unchecked, 12.65ms Time], IncrementalHoareTripleChecker [25 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 110.53ms Time] [2021-11-07 16:07:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-11-07 16:07:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 2667. [2021-11-07 16:07:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2656 states have (on average 1.4107680722891567) internal successors, (3747), 2657 states have internal predecessors, (3747), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3759 transitions. [2021-11-07 16:07:50,442 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3759 transitions. Word has length 92 [2021-11-07 16:07:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:50,442 INFO L470 AbstractCegarLoop]: Abstraction has 2667 states and 3759 transitions. [2021-11-07 16:07:50,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3759 transitions. [2021-11-07 16:07:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 16:07:50,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:50,447 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] [2021-11-07 16:07:50,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:07:50,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:50,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:50,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1503123760, now seen corresponding path program 1 times [2021-11-07 16:07:50,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:50,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339895431] [2021-11-07 16:07:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:50,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:50,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:50,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339895431] [2021-11-07 16:07:50,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339895431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:50,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:50,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:07:50,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992643812] [2021-11-07 16:07:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:50,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:07:50,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:07:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:07:50,662 INFO L87 Difference]: Start difference. First operand 2667 states and 3759 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:51,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:51,418 INFO L93 Difference]: Finished difference Result 11619 states and 16612 transitions. [2021-11-07 16:07:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 16:07:51,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 16:07:51,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:51,446 INFO L225 Difference]: With dead ends: 11619 [2021-11-07 16:07:51,446 INFO L226 Difference]: Without dead ends: 8971 [2021-11-07 16:07:51,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.08ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 16:07:51,457 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 6735 mSDsluCounter, 12756 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6740 SdHoareTripleChecker+Valid, 16974 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.44ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 208.22ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:51,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6740 Valid, 16974 Invalid, 178 Unknown, 0 Unchecked, 18.44ms Time], IncrementalHoareTripleChecker [24 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 208.22ms Time] [2021-11-07 16:07:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2021-11-07 16:07:51,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 2670. [2021-11-07 16:07:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2659 states have (on average 1.4103046257991727) internal successors, (3750), 2660 states have internal predecessors, (3750), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:51,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3762 transitions. [2021-11-07 16:07:51,597 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3762 transitions. Word has length 97 [2021-11-07 16:07:51,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:51,597 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 3762 transitions. [2021-11-07 16:07:51,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:51,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3762 transitions. [2021-11-07 16:07:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 16:07:51,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:51,603 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] [2021-11-07 16:07:51,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:07:51,603 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash 76208488, now seen corresponding path program 1 times [2021-11-07 16:07:51,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:51,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451586812] [2021-11-07 16:07:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:51,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:51,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:51,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451586812] [2021-11-07 16:07:51,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451586812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:51,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:51,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:07:51,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108459629] [2021-11-07 16:07:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:51,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:07:51,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:07:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:07:51,785 INFO L87 Difference]: Start difference. First operand 2670 states and 3762 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:52,502 INFO L93 Difference]: Finished difference Result 7694 states and 10954 transitions. [2021-11-07 16:07:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:07:52,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 103 [2021-11-07 16:07:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:52,515 INFO L225 Difference]: With dead ends: 7694 [2021-11-07 16:07:52,515 INFO L226 Difference]: Without dead ends: 5043 [2021-11-07 16:07:52,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:07:52,524 INFO L933 BasicCegarLoop]: 4020 mSDtfsCounter, 2229 mSDsluCounter, 7271 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 413.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 11291 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.38ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 465.46ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:52,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2231 Valid, 11291 Invalid, 128 Unknown, 0 Unchecked, 8.38ms Time], IncrementalHoareTripleChecker [29 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 465.46ms Time] [2021-11-07 16:07:52,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2021-11-07 16:07:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 2680. [2021-11-07 16:07:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2669 states have (on average 1.408767328587486) internal successors, (3760), 2670 states have internal predecessors, (3760), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3772 transitions. [2021-11-07 16:07:52,628 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3772 transitions. Word has length 103 [2021-11-07 16:07:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:52,628 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 3772 transitions. [2021-11-07 16:07:52,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3772 transitions. [2021-11-07 16:07:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 16:07:52,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:52,634 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] [2021-11-07 16:07:52,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:07:52,635 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1194987352, now seen corresponding path program 1 times [2021-11-07 16:07:52,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:52,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226349477] [2021-11-07 16:07:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:52,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:52,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:52,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226349477] [2021-11-07 16:07:52,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226349477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:52,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:52,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:07:52,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461211603] [2021-11-07 16:07:52,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:52,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:07:52,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:07:52,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:52,796 INFO L87 Difference]: Start difference. First operand 2680 states and 3772 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:52,962 INFO L93 Difference]: Finished difference Result 5653 states and 7964 transitions. [2021-11-07 16:07:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:07:52,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 16:07:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:52,970 INFO L225 Difference]: With dead ends: 5653 [2021-11-07 16:07:52,970 INFO L226 Difference]: Without dead ends: 2992 [2021-11-07 16:07:52,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:52,976 INFO L933 BasicCegarLoop]: 3494 mSDtfsCounter, 375 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.25ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.99ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:52,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 6582 Invalid, 30 Unknown, 0 Unchecked, 5.25ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 50.99ms Time] [2021-11-07 16:07:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2021-11-07 16:07:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2680. [2021-11-07 16:07:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2669 states have (on average 1.4080179842637692) internal successors, (3758), 2670 states have internal predecessors, (3758), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3770 transitions. [2021-11-07 16:07:53,075 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3770 transitions. Word has length 107 [2021-11-07 16:07:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:53,076 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 3770 transitions. [2021-11-07 16:07:53,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3770 transitions. [2021-11-07 16:07:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 16:07:53,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:53,084 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] [2021-11-07 16:07:53,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 16:07:53,084 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1165161620, now seen corresponding path program 1 times [2021-11-07 16:07:53,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:53,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913496150] [2021-11-07 16:07:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:53,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:53,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:53,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913496150] [2021-11-07 16:07:53,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913496150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:53,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:53,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 16:07:53,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911799660] [2021-11-07 16:07:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:53,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:07:53,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:07:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:07:53,278 INFO L87 Difference]: Start difference. First operand 2680 states and 3770 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:54,911 INFO L93 Difference]: Finished difference Result 11289 states and 16092 transitions. [2021-11-07 16:07:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 16:07:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 16:07:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:54,950 INFO L225 Difference]: With dead ends: 11289 [2021-11-07 16:07:54,950 INFO L226 Difference]: Without dead ends: 8628 [2021-11-07 16:07:54,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 148.76ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-07 16:07:54,961 INFO L933 BasicCegarLoop]: 4059 mSDtfsCounter, 8067 mSDsluCounter, 20941 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 781.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8070 SdHoareTripleChecker+Valid, 25000 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.72ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 899.99ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:54,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8070 Valid, 25000 Invalid, 692 Unknown, 0 Unchecked, 22.72ms Time], IncrementalHoareTripleChecker [117 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 899.99ms Time] [2021-11-07 16:07:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8628 states. [2021-11-07 16:07:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8628 to 2725. [2021-11-07 16:07:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2714 states have (on average 1.4060427413411938) internal successors, (3816), 2715 states have internal predecessors, (3816), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3828 transitions. [2021-11-07 16:07:55,119 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3828 transitions. Word has length 109 [2021-11-07 16:07:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:55,120 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3828 transitions. [2021-11-07 16:07:55,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3828 transitions. [2021-11-07 16:07:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 16:07:55,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:55,127 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] [2021-11-07 16:07:55,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 16:07:55,128 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:55,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash -103991380, now seen corresponding path program 1 times [2021-11-07 16:07:55,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:55,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611853038] [2021-11-07 16:07:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:55,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:55,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:55,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611853038] [2021-11-07 16:07:55,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611853038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:55,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:55,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:07:55,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166675389] [2021-11-07 16:07:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:55,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:07:55,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:07:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:55,286 INFO L87 Difference]: Start difference. First operand 2725 states and 3828 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:55,483 INFO L93 Difference]: Finished difference Result 5737 states and 8069 transitions. [2021-11-07 16:07:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:07:55,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-07 16:07:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:55,492 INFO L225 Difference]: With dead ends: 5737 [2021-11-07 16:07:55,492 INFO L226 Difference]: Without dead ends: 3031 [2021-11-07 16:07:55,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:55,500 INFO L933 BasicCegarLoop]: 3491 mSDtfsCounter, 382 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 6559 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.01ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:55,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 6559 Invalid, 29 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 55.01ms Time] [2021-11-07 16:07:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-11-07 16:07:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2725. [2021-11-07 16:07:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2714 states have (on average 1.4053058216654384) internal successors, (3814), 2715 states have internal predecessors, (3814), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3826 transitions. [2021-11-07 16:07:55,619 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3826 transitions. Word has length 121 [2021-11-07 16:07:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:55,620 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3826 transitions. [2021-11-07 16:07:55,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3826 transitions. [2021-11-07 16:07:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 16:07:55,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:55,627 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] [2021-11-07 16:07:55,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 16:07:55,627 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1010335272, now seen corresponding path program 1 times [2021-11-07 16:07:55,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:55,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467706847] [2021-11-07 16:07:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:55,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:56,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:56,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467706847] [2021-11-07 16:07:56,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467706847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:56,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:56,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:07:56,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339678583] [2021-11-07 16:07:56,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:56,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:07:56,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:07:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:56,291 INFO L87 Difference]: Start difference. First operand 2725 states and 3826 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:56,735 INFO L93 Difference]: Finished difference Result 5435 states and 7637 transitions. [2021-11-07 16:07:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:07:56,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 123 [2021-11-07 16:07:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:56,743 INFO L225 Difference]: With dead ends: 5435 [2021-11-07 16:07:56,743 INFO L226 Difference]: Without dead ends: 2726 [2021-11-07 16:07:56,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:56,750 INFO L933 BasicCegarLoop]: 3207 mSDtfsCounter, 0 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 306.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.18ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:56,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6358 Invalid, 57 Unknown, 0 Unchecked, 4.02ms Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 333.18ms Time] [2021-11-07 16:07:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2021-11-07 16:07:56,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2726. [2021-11-07 16:07:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2715 states have (on average 1.405156537753223) internal successors, (3815), 2716 states have internal predecessors, (3815), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3827 transitions. [2021-11-07 16:07:56,861 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3827 transitions. Word has length 123 [2021-11-07 16:07:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:56,861 INFO L470 AbstractCegarLoop]: Abstraction has 2726 states and 3827 transitions. [2021-11-07 16:07:56,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:56,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3827 transitions. [2021-11-07 16:07:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 16:07:56,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:56,867 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] [2021-11-07 16:07:56,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 16:07:56,868 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2143153690, now seen corresponding path program 1 times [2021-11-07 16:07:56,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:56,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885928434] [2021-11-07 16:07:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:56,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:07:57,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:57,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885928434] [2021-11-07 16:07:57,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885928434] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:07:57,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275609461] [2021-11-07 16:07:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:57,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:07:57,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:07:57,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:07:57,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 16:07:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:57,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 16:07:57,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:07:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:07:58,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:07:58,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275609461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:58,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:07:58,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 16:07:58,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262391780] [2021-11-07 16:07:58,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:58,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:07:58,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:07:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:07:58,148 INFO L87 Difference]: Start difference. First operand 2726 states and 3827 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:58,737 INFO L93 Difference]: Finished difference Result 10074 states and 14271 transitions. [2021-11-07 16:07:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 16:07:58,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-07 16:07:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:58,756 INFO L225 Difference]: With dead ends: 10074 [2021-11-07 16:07:58,756 INFO L226 Difference]: Without dead ends: 7368 [2021-11-07 16:07:58,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.08ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 16:07:58,765 INFO L933 BasicCegarLoop]: 3990 mSDtfsCounter, 6946 mSDsluCounter, 11917 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6949 SdHoareTripleChecker+Valid, 15907 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.51ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.05ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:58,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6949 Valid, 15907 Invalid, 38 Unknown, 0 Unchecked, 11.51ms Time], IncrementalHoareTripleChecker [13 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 46.05ms Time] [2021-11-07 16:07:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2021-11-07 16:07:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 2726. [2021-11-07 16:07:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2715 states have (on average 1.405156537753223) internal successors, (3815), 2716 states have internal predecessors, (3815), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3827 transitions. [2021-11-07 16:07:58,910 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3827 transitions. Word has length 124 [2021-11-07 16:07:58,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:58,911 INFO L470 AbstractCegarLoop]: Abstraction has 2726 states and 3827 transitions. [2021-11-07 16:07:58,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:58,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3827 transitions. [2021-11-07 16:07:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 16:07:58,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:58,917 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] [2021-11-07 16:07:58,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 16:07:59,134 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,SelfDestructingSolverStorable13 [2021-11-07 16:07:59,135 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1345235590, now seen corresponding path program 1 times [2021-11-07 16:07:59,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:59,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853708520] [2021-11-07 16:07:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:59,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:07:59,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:59,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853708520] [2021-11-07 16:07:59,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853708520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:59,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:59,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:07:59,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600336458] [2021-11-07 16:07:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:59,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:07:59,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:07:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:59,239 INFO L87 Difference]: Start difference. First operand 2726 states and 3827 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:59,365 INFO L93 Difference]: Finished difference Result 5433 states and 7635 transitions. [2021-11-07 16:07:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:07:59,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-07 16:07:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:59,372 INFO L225 Difference]: With dead ends: 5433 [2021-11-07 16:07:59,372 INFO L226 Difference]: Without dead ends: 2727 [2021-11-07 16:07:59,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:59,381 INFO L933 BasicCegarLoop]: 3207 mSDtfsCounter, 0 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6409 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.73ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:59,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6409 Invalid, 6 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 8.73ms Time] [2021-11-07 16:07:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2021-11-07 16:07:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2727. [2021-11-07 16:07:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2716 states have (on average 1.4050073637702503) internal successors, (3816), 2717 states have internal predecessors, (3816), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3828 transitions. [2021-11-07 16:07:59,535 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3828 transitions. Word has length 137 [2021-11-07 16:07:59,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:59,535 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3828 transitions. [2021-11-07 16:07:59,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3828 transitions. [2021-11-07 16:07:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 16:07:59,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:59,541 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] [2021-11-07 16:07:59,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 16:07:59,542 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:59,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash 900343864, now seen corresponding path program 1 times [2021-11-07 16:07:59,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:59,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419657754] [2021-11-07 16:07:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:59,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:07:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:07:59,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:07:59,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419657754] [2021-11-07 16:07:59,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419657754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:07:59,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:07:59,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:07:59,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678883614] [2021-11-07 16:07:59,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:07:59,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:07:59,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:07:59,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:07:59,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:59,645 INFO L87 Difference]: Start difference. First operand 2727 states and 3828 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:07:59,774 INFO L93 Difference]: Finished difference Result 5436 states and 7638 transitions. [2021-11-07 16:07:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:07:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-07 16:07:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:07:59,783 INFO L225 Difference]: With dead ends: 5436 [2021-11-07 16:07:59,783 INFO L226 Difference]: Without dead ends: 2729 [2021-11-07 16:07:59,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:07:59,789 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 1 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6409 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.02ms IncrementalHoareTripleChecker+Time [2021-11-07 16:07:59,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6409 Invalid, 6 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 10.02ms Time] [2021-11-07 16:07:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-11-07 16:07:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2728. [2021-11-07 16:07:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 2717 states have (on average 1.4048582995951417) internal successors, (3817), 2718 states have internal predecessors, (3817), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:07:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 3829 transitions. [2021-11-07 16:07:59,913 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 3829 transitions. Word has length 137 [2021-11-07 16:07:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:07:59,913 INFO L470 AbstractCegarLoop]: Abstraction has 2728 states and 3829 transitions. [2021-11-07 16:07:59,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:07:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 3829 transitions. [2021-11-07 16:07:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 16:07:59,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:07:59,921 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, 1] [2021-11-07 16:07:59,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 16:07:59,922 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:07:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:07:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash 86919636, now seen corresponding path program 1 times [2021-11-07 16:07:59,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:07:59,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173835228] [2021-11-07 16:07:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:07:59,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:07:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:08:00,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:00,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173835228] [2021-11-07 16:08:00,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173835228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:00,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566969259] [2021-11-07 16:08:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:00,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:00,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:00,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:00,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 16:08:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:00,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:08:00,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:08:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 16:08:01,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:08:01,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566969259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:08:01,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:08:01,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-07 16:08:01,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880598941] [2021-11-07 16:08:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:08:01,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:08:01,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:08:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:08:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 16:08:01,005 INFO L87 Difference]: Start difference. First operand 2728 states and 3829 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:08:01,153 INFO L93 Difference]: Finished difference Result 5446 states and 7652 transitions. [2021-11-07 16:08:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:08:01,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 139 [2021-11-07 16:08:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:08:01,159 INFO L225 Difference]: With dead ends: 5446 [2021-11-07 16:08:01,159 INFO L226 Difference]: Without dead ends: 2738 [2021-11-07 16:08:01,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.78ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:08:01,163 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 12 mSDsluCounter, 6404 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9609 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.68ms IncrementalHoareTripleChecker+Time [2021-11-07 16:08:01,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 9609 Invalid, 17 Unknown, 0 Unchecked, 4.70ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 14.68ms Time] [2021-11-07 16:08:01,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-07 16:08:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2730. [2021-11-07 16:08:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2719 states have (on average 1.4045605001838912) internal successors, (3819), 2720 states have internal predecessors, (3819), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:08:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3831 transitions. [2021-11-07 16:08:01,325 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3831 transitions. Word has length 139 [2021-11-07 16:08:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:08:01,326 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3831 transitions. [2021-11-07 16:08:01,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3831 transitions. [2021-11-07 16:08:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 16:08:01,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:08:01,331 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, 1] [2021-11-07 16:08:01,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 16:08:01,547 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,SelfDestructingSolverStorable16 [2021-11-07 16:08:01,548 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:08:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:08:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1852242410, now seen corresponding path program 1 times [2021-11-07 16:08:01,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:08:01,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645597847] [2021-11-07 16:08:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:01,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:08:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:08:01,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:01,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645597847] [2021-11-07 16:08:01,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645597847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:01,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829327692] [2021-11-07 16:08:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:01,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:01,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:01,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:01,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 16:08:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:02,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:08:02,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:08:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 16:08:02,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:08:02,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829327692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:08:02,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:08:02,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-07 16:08:02,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732752313] [2021-11-07 16:08:02,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:08:02,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:08:02,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:08:02,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:08:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 16:08:02,530 INFO L87 Difference]: Start difference. First operand 2730 states and 3831 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:08:02,664 INFO L93 Difference]: Finished difference Result 5443 states and 7645 transitions. [2021-11-07 16:08:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:08:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 139 [2021-11-07 16:08:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:08:02,674 INFO L225 Difference]: With dead ends: 5443 [2021-11-07 16:08:02,675 INFO L226 Difference]: Without dead ends: 2733 [2021-11-07 16:08:02,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.50ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:08:02,680 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 3 mSDsluCounter, 6403 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9608 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.85ms IncrementalHoareTripleChecker+Time [2021-11-07 16:08:02,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 9608 Invalid, 15 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 13.85ms Time] [2021-11-07 16:08:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2021-11-07 16:08:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2732. [2021-11-07 16:08:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2721 states have (on average 1.404263138552003) internal successors, (3821), 2722 states have internal predecessors, (3821), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:08:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3833 transitions. [2021-11-07 16:08:02,802 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3833 transitions. Word has length 139 [2021-11-07 16:08:02,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:08:02,802 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 3833 transitions. [2021-11-07 16:08:02,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3833 transitions. [2021-11-07 16:08:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 16:08:02,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:08:02,811 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, 1] [2021-11-07 16:08:02,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 16:08:03,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 16:08:03,034 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:08:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:08:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash -394160622, now seen corresponding path program 1 times [2021-11-07 16:08:03,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:08:03,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021637133] [2021-11-07 16:08:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:03,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:08:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:08:03,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:03,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021637133] [2021-11-07 16:08:03,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021637133] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:03,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584465049] [2021-11-07 16:08:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:03,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:03,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:03,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:03,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 16:08:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:03,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:08:03,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:08:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:08:03,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:08:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:08:04,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584465049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:08:04,129 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:08:04,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 16:08:04,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301637191] [2021-11-07 16:08:04,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:08:04,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:08:04,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:08:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:08:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:08:04,130 INFO L87 Difference]: Start difference. First operand 2732 states and 3833 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:08:04,272 INFO L93 Difference]: Finished difference Result 5450 states and 7654 transitions. [2021-11-07 16:08:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:08:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 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 139 [2021-11-07 16:08:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:08:04,279 INFO L225 Difference]: With dead ends: 5450 [2021-11-07 16:08:04,279 INFO L226 Difference]: Without dead ends: 2738 [2021-11-07 16:08:04,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.19ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:08:04,284 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 6 mSDsluCounter, 6406 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9612 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.09ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.69ms IncrementalHoareTripleChecker+Time [2021-11-07 16:08:04,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 9612 Invalid, 20 Unknown, 0 Unchecked, 4.09ms Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 20.69ms Time] [2021-11-07 16:08:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-07 16:08:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2738. [2021-11-07 16:08:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2738 states, 2727 states have (on average 1.4033736707004034) internal successors, (3827), 2728 states have internal predecessors, (3827), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:08:04,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2738 states to 2738 states and 3839 transitions. [2021-11-07 16:08:04,411 INFO L78 Accepts]: Start accepts. Automaton has 2738 states and 3839 transitions. Word has length 139 [2021-11-07 16:08:04,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:08:04,411 INFO L470 AbstractCegarLoop]: Abstraction has 2738 states and 3839 transitions. [2021-11-07 16:08:04,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:04,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2738 states and 3839 transitions. [2021-11-07 16:08:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 16:08:04,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:08:04,417 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-07 16:08:04,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 16:08:04,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:04,635 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:08:04,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:08:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1412598374, now seen corresponding path program 2 times [2021-11-07 16:08:04,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:08:04,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977404276] [2021-11-07 16:08:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:04,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:08:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 16:08:04,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:04,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977404276] [2021-11-07 16:08:04,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977404276] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:04,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286732495] [2021-11-07 16:08:04,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:08:04,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:04,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:04,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:04,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 16:08:12,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 16:08:12,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:08:12,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 16:08:12,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:08:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 16:08:12,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:08:12,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286732495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:08:12,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:08:12,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-07 16:08:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599445608] [2021-11-07 16:08:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:08:12,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:08:12,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:08:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:08:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:08:12,914 INFO L87 Difference]: Start difference. First operand 2738 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:08:13,182 INFO L93 Difference]: Finished difference Result 5469 states and 7683 transitions. [2021-11-07 16:08:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:08:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 145 [2021-11-07 16:08:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:08:13,189 INFO L225 Difference]: With dead ends: 5469 [2021-11-07 16:08:13,190 INFO L226 Difference]: Without dead ends: 2751 [2021-11-07 16:08:13,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 16.87ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:08:13,195 INFO L933 BasicCegarLoop]: 3199 mSDtfsCounter, 0 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.46ms IncrementalHoareTripleChecker+Time [2021-11-07 16:08:13,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6350 Invalid, 73 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [16 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 101.46ms Time] [2021-11-07 16:08:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-11-07 16:08:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2751. [2021-11-07 16:08:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2740 states have (on average 1.4014598540145986) internal successors, (3840), 2741 states have internal predecessors, (3840), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:08:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3852 transitions. [2021-11-07 16:08:13,364 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3852 transitions. Word has length 145 [2021-11-07 16:08:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:08:13,364 INFO L470 AbstractCegarLoop]: Abstraction has 2751 states and 3852 transitions. [2021-11-07 16:08:13,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3852 transitions. [2021-11-07 16:08:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-07 16:08:13,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:08:13,375 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-07 16:08:13,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 16:08:13,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:13,592 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:08:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:08:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 698373428, now seen corresponding path program 1 times [2021-11-07 16:08:13,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:08:13,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915660343] [2021-11-07 16:08:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:13,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:08:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 16:08:13,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:13,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915660343] [2021-11-07 16:08:13,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915660343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:13,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913429326] [2021-11-07 16:08:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:13,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:13,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:13,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:13,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 16:08:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:14,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 16:08:14,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:08:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 16:08:14,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:08:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 16:08:14,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913429326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:08:14,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:08:14,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-07 16:08:14,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948442423] [2021-11-07 16:08:14,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:08:14,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 16:08:14,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:08:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 16:08:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 16:08:14,774 INFO L87 Difference]: Start difference. First operand 2751 states and 3852 transitions. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:08:14,945 INFO L93 Difference]: Finished difference Result 5494 states and 7701 transitions. [2021-11-07 16:08:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 16:08:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-07 16:08:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:08:14,951 INFO L225 Difference]: With dead ends: 5494 [2021-11-07 16:08:14,951 INFO L226 Difference]: Without dead ends: 2763 [2021-11-07 16:08:14,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 50.30ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 16:08:14,956 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 15 mSDsluCounter, 6406 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9612 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.14ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.30ms IncrementalHoareTripleChecker+Time [2021-11-07 16:08:14,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 9612 Invalid, 35 Unknown, 0 Unchecked, 4.14ms Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 38.30ms Time] [2021-11-07 16:08:14,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2021-11-07 16:08:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2021-11-07 16:08:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2752 states have (on average 1.3997093023255813) internal successors, (3852), 2753 states have internal predecessors, (3852), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:08:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3864 transitions. [2021-11-07 16:08:15,081 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3864 transitions. Word has length 147 [2021-11-07 16:08:15,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:08:15,081 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 3864 transitions. [2021-11-07 16:08:15,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3864 transitions. [2021-11-07 16:08:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 16:08:15,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:08:15,086 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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] [2021-11-07 16:08:15,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 16:08:15,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:15,309 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:08:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:08:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1131756428, now seen corresponding path program 2 times [2021-11-07 16:08:15,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:08:15,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461113885] [2021-11-07 16:08:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:15,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:08:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 16:08:15,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:15,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461113885] [2021-11-07 16:08:15,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461113885] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:15,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885714702] [2021-11-07 16:08:15,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:08:15,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:15,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:15,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:15,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 16:08:29,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 16:08:29,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:08:29,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 16:08:29,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:08:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-07 16:08:30,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:08:30,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885714702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:08:30,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:08:30,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-11-07 16:08:30,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133780637] [2021-11-07 16:08:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:08:30,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:08:30,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:08:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:08:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-07 16:08:30,026 INFO L87 Difference]: Start difference. First operand 2763 states and 3864 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:08:30,564 INFO L93 Difference]: Finished difference Result 5507 states and 7709 transitions. [2021-11-07 16:08:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:08:30,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 159 [2021-11-07 16:08:30,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:08:30,571 INFO L225 Difference]: With dead ends: 5507 [2021-11-07 16:08:30,571 INFO L226 Difference]: Without dead ends: 2764 [2021-11-07 16:08:30,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 63.93ms TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-07 16:08:30,576 INFO L933 BasicCegarLoop]: 3207 mSDtfsCounter, 0 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 364.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 387.36ms IncrementalHoareTripleChecker+Time [2021-11-07 16:08:30,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6358 Invalid, 57 Unknown, 0 Unchecked, 3.54ms Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 387.36ms Time] [2021-11-07 16:08:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-11-07 16:08:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2021-11-07 16:08:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2753 states have (on average 1.3995641118779514) internal successors, (3853), 2754 states have internal predecessors, (3853), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:08:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3865 transitions. [2021-11-07 16:08:30,696 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3865 transitions. Word has length 159 [2021-11-07 16:08:30,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:08:30,696 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3865 transitions. [2021-11-07 16:08:30,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:08:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3865 transitions. [2021-11-07 16:08:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 16:08:30,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:08:30,701 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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] [2021-11-07 16:08:30,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-07 16:08:30,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:30,926 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:08:30,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:08:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1098054863, now seen corresponding path program 1 times [2021-11-07 16:08:30,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:08:30,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397620928] [2021-11-07 16:08:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:30,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:08:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:08:31,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:31,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397620928] [2021-11-07 16:08:31,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397620928] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:31,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823923419] [2021-11-07 16:08:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:31,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:31,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:31,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:31,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 16:08:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:31,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2781 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 16:08:31,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:08:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:08:32,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:08:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:08:32,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823923419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:08:32,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:08:32,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-07 16:08:32,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491289441] [2021-11-07 16:08:32,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:08:32,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 16:08:32,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:08:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 16:08:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 16:08:32,371 INFO L87 Difference]: Start difference. First operand 2764 states and 3865 transitions. Second operand has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 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) [2021-11-07 16:08:32,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:08:32,605 INFO L93 Difference]: Finished difference Result 5532 states and 7745 transitions. [2021-11-07 16:08:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 16:08:32,606 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 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 160 [2021-11-07 16:08:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:08:32,611 INFO L225 Difference]: With dead ends: 5532 [2021-11-07 16:08:32,611 INFO L226 Difference]: Without dead ends: 2788 [2021-11-07 16:08:32,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 183.94ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 16:08:32,615 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 33 mSDsluCounter, 12812 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16018 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.16ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.89ms IncrementalHoareTripleChecker+Time [2021-11-07 16:08:32,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 16018 Invalid, 69 Unknown, 0 Unchecked, 6.16ms Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 73.89ms Time] [2021-11-07 16:08:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2021-11-07 16:08:32,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2788. [2021-11-07 16:08:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2777 states have (on average 1.3961109110550953) internal successors, (3877), 2778 states have internal predecessors, (3877), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 16:08:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3889 transitions. [2021-11-07 16:08:32,743 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3889 transitions. Word has length 160 [2021-11-07 16:08:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:08:32,743 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 3889 transitions. [2021-11-07 16:08:32,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 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) [2021-11-07 16:08:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3889 transitions. [2021-11-07 16:08:32,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-07 16:08:32,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:08:32,748 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 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] [2021-11-07 16:08:32,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 16:08:32,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 16:08:32,964 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 16:08:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:08:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -458647423, now seen corresponding path program 2 times [2021-11-07 16:08:32,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:08:32,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311853148] [2021-11-07 16:08:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:08:32,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:08:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:08:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:08:33,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:08:33,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311853148] [2021-11-07 16:08:33,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311853148] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:08:33,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098619202] [2021-11-07 16:08:33,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:08:33,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:08:33,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:08:33,367 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:08:33,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15