./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.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 a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:21:25,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:21:26,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:21:26,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:21:26,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:21:26,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:21:26,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:21:26,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:21:26,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:21:26,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:21:26,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:21:26,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:21:26,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:21:26,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:21:26,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:21:26,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:21:26,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:21:26,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:21:26,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:21:26,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:21:26,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:21:26,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:21:26,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:21:26,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:21:26,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:21:26,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:21:26,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:21:26,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:21:26,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:21:26,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:21:26,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:21:26,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:21:26,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:21:26,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:21:26,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:21:26,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:21:26,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:21:26,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:21:26,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:21:26,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:21:26,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:21:26,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:21:26,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:21:26,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:21:26,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:21:26,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:21:26,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:21:26,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:21:26,097 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:21:26,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:21:26,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:21:26,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:21:26,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:21:26,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:21:26,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:21:26,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:21:26,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:21:26,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:21:26,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:21:26,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:21:26,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:21:26,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:21:26,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:21:26,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:21:26,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:21:26,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:21:26,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:21:26,100 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:21:26,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:21:26,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:21:26,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:21:26,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2021-11-06 14:21:26,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:21:26,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:21:26,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:21:26,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:21:26,328 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:21:26,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2021-11-06 14:21:26,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2494b0e/1796e6171cc94c42839f81722b1ae714/FLAGecb925a47 [2021-11-06 14:21:27,123 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:21:27,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2021-11-06 14:21:27,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2494b0e/1796e6171cc94c42839f81722b1ae714/FLAGecb925a47 [2021-11-06 14:21:27,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2494b0e/1796e6171cc94c42839f81722b1ae714 [2021-11-06 14:21:27,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:21:27,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:21:27,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:21:27,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:21:27,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:21:27,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:21:27" (1/1) ... [2021-11-06 14:21:27,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1921cede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:27, skipping insertion in model container [2021-11-06 14:21:27,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:21:27" (1/1) ... [2021-11-06 14:21:27,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:21:27,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:21:28,556 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2021-11-06 14:21:29,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:21:29,241 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:21:29,366 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2021-11-06 14:21:29,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:21:29,558 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:21:29,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29 WrapperNode [2021-11-06 14:21:29,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:21:29,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:21:29,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:21:29,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:21:29,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:29,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:29,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:21:29,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:21:29,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:21:29,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:21:29,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:29,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:29,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:29,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:30,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:30,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:30,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:30,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:21:30,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:21:30,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:21:30,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:21:30,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (1/1) ... [2021-11-06 14:21:30,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:21:30,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:21:30,229 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) [2021-11-06 14:21:30,239 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 [2021-11-06 14:21:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:21:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-06 14:21:30,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-06 14:21:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:21:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:21:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:21:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 14:21:30,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 14:21:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:21:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_rx_cb [2021-11-06 14:21:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_rx_cb [2021-11-06 14:21:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:21:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:21:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:21:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 14:21:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:21:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:21:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2021-11-06 14:21:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2021-11-06 14:21:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:21:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:21:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:21:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:21:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:21:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2021-11-06 14:21:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2021-11-06 14:21:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:21:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:21:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:21:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:21:50,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:21:50,692 INFO L299 CfgBuilder]: Removed 933 assume(true) statements. [2021-11-06 14:21:50,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:21:50 BoogieIcfgContainer [2021-11-06 14:21:50,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:21:50,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:21:50,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:21:50,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:21:50,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:21:27" (1/3) ... [2021-11-06 14:21:50,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f84e672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:21:50, skipping insertion in model container [2021-11-06 14:21:50,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:29" (2/3) ... [2021-11-06 14:21:50,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f84e672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:21:50, skipping insertion in model container [2021-11-06 14:21:50,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:21:50" (3/3) ... [2021-11-06 14:21:50,707 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2021-11-06 14:21:50,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:21:50,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 14:21:50,781 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:21:50,789 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 [2021-11-06 14:21:50,790 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 14:21:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 928 states, 903 states have (on average 1.3654485049833887) internal successors, (1233), 909 states have internal predecessors, (1233), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 14:21:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-06 14:21:50,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:50,845 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:50,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -254564778, now seen corresponding path program 1 times [2021-11-06 14:21:50,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:50,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823002054] [2021-11-06 14:21:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:50,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:51,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:51,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823002054] [2021-11-06 14:21:51,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823002054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:51,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:51,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:21:51,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966439198] [2021-11-06 14:21:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:51,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:51,482 INFO L87 Difference]: Start difference. First operand has 928 states, 903 states have (on average 1.3654485049833887) internal successors, (1233), 909 states have internal predecessors, (1233), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:53,760 INFO L93 Difference]: Finished difference Result 2738 states and 3737 transitions. [2021-11-06 14:21:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:53,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-06 14:21:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:53,781 INFO L225 Difference]: With dead ends: 2738 [2021-11-06 14:21:53,782 INFO L226 Difference]: Without dead ends: 1793 [2021-11-06 14:21:53,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-06 14:21:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1793. [2021-11-06 14:21:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1750 states have (on average 1.3285714285714285) internal successors, (2325), 1756 states have internal predecessors, (2325), 24 states have call successors, (24), 14 states have call predecessors, (24), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 14:21:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2373 transitions. [2021-11-06 14:21:53,986 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2373 transitions. Word has length 17 [2021-11-06 14:21:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:53,987 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 2373 transitions. [2021-11-06 14:21:53,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2373 transitions. [2021-11-06 14:21:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 14:21:53,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:53,990 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:53,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:21:53,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1673258948, now seen corresponding path program 1 times [2021-11-06 14:21:53,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:53,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608881446] [2021-11-06 14:21:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:53,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:54,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:54,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608881446] [2021-11-06 14:21:54,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608881446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:54,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:54,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:21:54,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642306372] [2021-11-06 14:21:54,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:54,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:54,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:54,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:54,171 INFO L87 Difference]: Start difference. First operand 1793 states and 2373 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:54,334 INFO L93 Difference]: Finished difference Result 1823 states and 2401 transitions. [2021-11-06 14:21:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:54,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-06 14:21:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:54,343 INFO L225 Difference]: With dead ends: 1823 [2021-11-06 14:21:54,344 INFO L226 Difference]: Without dead ends: 1808 [2021-11-06 14:21:54,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2021-11-06 14:21:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1793. [2021-11-06 14:21:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1750 states have (on average 1.328) internal successors, (2324), 1756 states have internal predecessors, (2324), 24 states have call successors, (24), 14 states have call predecessors, (24), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-06 14:21:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2372 transitions. [2021-11-06 14:21:54,406 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2372 transitions. Word has length 24 [2021-11-06 14:21:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:54,406 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 2372 transitions. [2021-11-06 14:21:54,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2372 transitions. [2021-11-06 14:21:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 14:21:54,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:54,408 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:54,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:21:54,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1673199366, now seen corresponding path program 1 times [2021-11-06 14:21:54,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:54,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767109872] [2021-11-06 14:21:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:54,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:54,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767109872] [2021-11-06 14:21:54,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767109872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:54,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:54,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:21:54,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869254914] [2021-11-06 14:21:54,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:54,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:54,615 INFO L87 Difference]: Start difference. First operand 1793 states and 2372 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:54,757 INFO L93 Difference]: Finished difference Result 5357 states and 7139 transitions. [2021-11-06 14:21:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:54,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-06 14:21:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:54,778 INFO L225 Difference]: With dead ends: 5357 [2021-11-06 14:21:54,778 INFO L226 Difference]: Without dead ends: 3574 [2021-11-06 14:21:54,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-06 14:21:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3562. [2021-11-06 14:21:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3481 states have (on average 1.3269175524274635) internal successors, (4619), 3489 states have internal predecessors, (4619), 48 states have call successors, (48), 28 states have call predecessors, (48), 28 states have return successors, (72), 48 states have call predecessors, (72), 48 states have call successors, (72) [2021-11-06 14:21:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 4739 transitions. [2021-11-06 14:21:54,957 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 4739 transitions. Word has length 24 [2021-11-06 14:21:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:54,957 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 4739 transitions. [2021-11-06 14:21:54,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 4739 transitions. [2021-11-06 14:21:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 14:21:54,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:54,959 INFO L513 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] [2021-11-06 14:21:54,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:21:54,959 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -329573397, now seen corresponding path program 1 times [2021-11-06 14:21:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:54,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192077235] [2021-11-06 14:21:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:54,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:55,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:55,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192077235] [2021-11-06 14:21:55,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192077235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:55,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:55,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:21:55,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199796641] [2021-11-06 14:21:55,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:55,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:55,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:55,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:55,149 INFO L87 Difference]: Start difference. First operand 3562 states and 4739 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:55,421 INFO L93 Difference]: Finished difference Result 10644 states and 14368 transitions. [2021-11-06 14:21:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-06 14:21:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:55,460 INFO L225 Difference]: With dead ends: 10644 [2021-11-06 14:21:55,460 INFO L226 Difference]: Without dead ends: 7092 [2021-11-06 14:21:55,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2021-11-06 14:21:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 7081. [2021-11-06 14:21:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7081 states, 6924 states have (on average 1.322212593876372) internal successors, (9155), 6936 states have internal predecessors, (9155), 96 states have call successors, (96), 56 states have call predecessors, (96), 56 states have return successors, (216), 96 states have call predecessors, (216), 96 states have call successors, (216) [2021-11-06 14:21:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 9467 transitions. [2021-11-06 14:21:55,849 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 9467 transitions. Word has length 25 [2021-11-06 14:21:55,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:55,850 INFO L470 AbstractCegarLoop]: Abstraction has 7081 states and 9467 transitions. [2021-11-06 14:21:55,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 9467 transitions. [2021-11-06 14:21:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-06 14:21:55,856 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:55,856 INFO L513 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] [2021-11-06 14:21:55,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:21:55,857 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1626841308, now seen corresponding path program 1 times [2021-11-06 14:21:55,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:55,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059578814] [2021-11-06 14:21:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:55,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:56,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:56,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059578814] [2021-11-06 14:21:56,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059578814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:56,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:56,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:21:56,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992849665] [2021-11-06 14:21:56,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:56,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:56,050 INFO L87 Difference]: Start difference. First operand 7081 states and 9467 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:56,239 INFO L93 Difference]: Finished difference Result 7086 states and 9471 transitions. [2021-11-06 14:21:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:56,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-06 14:21:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:56,277 INFO L225 Difference]: With dead ends: 7086 [2021-11-06 14:21:56,278 INFO L226 Difference]: Without dead ends: 7084 [2021-11-06 14:21:56,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7084 states. [2021-11-06 14:21:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7084 to 7082. [2021-11-06 14:21:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7082 states, 6925 states have (on average 1.3221660649819496) internal successors, (9156), 6937 states have internal predecessors, (9156), 96 states have call successors, (96), 56 states have call predecessors, (96), 56 states have return successors, (216), 96 states have call predecessors, (216), 96 states have call successors, (216) [2021-11-06 14:21:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7082 states to 7082 states and 9468 transitions. [2021-11-06 14:21:56,600 INFO L78 Accepts]: Start accepts. Automaton has 7082 states and 9468 transitions. Word has length 26 [2021-11-06 14:21:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:56,603 INFO L470 AbstractCegarLoop]: Abstraction has 7082 states and 9468 transitions. [2021-11-06 14:21:56,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 7082 states and 9468 transitions. [2021-11-06 14:21:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 14:21:56,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:56,605 INFO L513 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] [2021-11-06 14:21:56,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:21:56,605 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1107526421, now seen corresponding path program 1 times [2021-11-06 14:21:56,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:56,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443990529] [2021-11-06 14:21:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:56,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:56,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:56,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443990529] [2021-11-06 14:21:56,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443990529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:56,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:56,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:21:56,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506004726] [2021-11-06 14:21:56,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:56,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:56,797 INFO L87 Difference]: Start difference. First operand 7082 states and 9468 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:56,945 INFO L93 Difference]: Finished difference Result 7082 states and 9468 transitions. [2021-11-06 14:21:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:56,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-06 14:21:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:56,989 INFO L225 Difference]: With dead ends: 7082 [2021-11-06 14:21:56,989 INFO L226 Difference]: Without dead ends: 7080 [2021-11-06 14:21:56,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7080 states. [2021-11-06 14:21:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7080 to 7080. [2021-11-06 14:21:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7080 states, 6924 states have (on average 1.3220681686886193) internal successors, (9154), 6935 states have internal predecessors, (9154), 96 states have call successors, (96), 56 states have call predecessors, (96), 56 states have return successors, (216), 96 states have call predecessors, (216), 96 states have call successors, (216) [2021-11-06 14:21:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7080 states to 7080 states and 9466 transitions. [2021-11-06 14:21:57,299 INFO L78 Accepts]: Start accepts. Automaton has 7080 states and 9466 transitions. Word has length 27 [2021-11-06 14:21:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:57,300 INFO L470 AbstractCegarLoop]: Abstraction has 7080 states and 9466 transitions. [2021-11-06 14:21:57,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7080 states and 9466 transitions. [2021-11-06 14:21:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 14:21:57,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:57,303 INFO L513 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] [2021-11-06 14:21:57,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:21:57,304 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:57,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:57,304 INFO L85 PathProgramCache]: Analyzing trace with hash -26419890, now seen corresponding path program 1 times [2021-11-06 14:21:57,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:57,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345463863] [2021-11-06 14:21:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:57,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:57,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:57,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345463863] [2021-11-06 14:21:57,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345463863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:57,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:57,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:21:57,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955644254] [2021-11-06 14:21:57,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:57,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:57,467 INFO L87 Difference]: Start difference. First operand 7080 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:57,603 INFO L93 Difference]: Finished difference Result 7080 states and 9466 transitions. [2021-11-06 14:21:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:57,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-06 14:21:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:57,634 INFO L225 Difference]: With dead ends: 7080 [2021-11-06 14:21:57,635 INFO L226 Difference]: Without dead ends: 7071 [2021-11-06 14:21:57,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2021-11-06 14:21:57,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7071. [2021-11-06 14:21:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7071 states, 6916 states have (on average 1.3218623481781377) internal successors, (9142), 6926 states have internal predecessors, (9142), 96 states have call successors, (96), 56 states have call predecessors, (96), 56 states have return successors, (216), 96 states have call predecessors, (216), 96 states have call successors, (216) [2021-11-06 14:21:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 9454 transitions. [2021-11-06 14:21:57,959 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 9454 transitions. Word has length 28 [2021-11-06 14:21:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:57,959 INFO L470 AbstractCegarLoop]: Abstraction has 7071 states and 9454 transitions. [2021-11-06 14:21:57,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 9454 transitions. [2021-11-06 14:21:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 14:21:57,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:57,966 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:57,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:21:57,967 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:57,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1486654434, now seen corresponding path program 1 times [2021-11-06 14:21:57,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:57,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099574466] [2021-11-06 14:21:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:57,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:21:58,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:58,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099574466] [2021-11-06 14:21:58,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099574466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:58,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:58,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:21:58,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953604195] [2021-11-06 14:21:58,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:58,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:58,165 INFO L87 Difference]: Start difference. First operand 7071 states and 9454 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:58,445 INFO L93 Difference]: Finished difference Result 14254 states and 19068 transitions. [2021-11-06 14:21:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:58,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-06 14:21:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:58,548 INFO L225 Difference]: With dead ends: 14254 [2021-11-06 14:21:58,550 INFO L226 Difference]: Without dead ends: 7193 [2021-11-06 14:21:58,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7193 states. [2021-11-06 14:21:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7193 to 7171. [2021-11-06 14:21:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7171 states, 7016 states have (on average 1.3234036488027365) internal successors, (9285), 7026 states have internal predecessors, (9285), 96 states have call successors, (96), 56 states have call predecessors, (96), 56 states have return successors, (216), 96 states have call predecessors, (216), 96 states have call successors, (216) [2021-11-06 14:21:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7171 states to 7171 states and 9597 transitions. [2021-11-06 14:21:58,831 INFO L78 Accepts]: Start accepts. Automaton has 7171 states and 9597 transitions. Word has length 77 [2021-11-06 14:21:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:58,832 INFO L470 AbstractCegarLoop]: Abstraction has 7171 states and 9597 transitions. [2021-11-06 14:21:58,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7171 states and 9597 transitions. [2021-11-06 14:21:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 14:21:58,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:58,840 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:58,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:21:58,841 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1171437125, now seen corresponding path program 1 times [2021-11-06 14:21:58,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:58,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108651924] [2021-11-06 14:21:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:58,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:21:59,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:59,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108651924] [2021-11-06 14:21:59,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108651924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:59,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:21:59,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:21:59,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385466919] [2021-11-06 14:21:59,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:59,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:59,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:59,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:59,049 INFO L87 Difference]: Start difference. First operand 7171 states and 9597 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:59,347 INFO L93 Difference]: Finished difference Result 15841 states and 21243 transitions. [2021-11-06 14:21:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:59,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 14:21:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:59,392 INFO L225 Difference]: With dead ends: 15841 [2021-11-06 14:21:59,393 INFO L226 Difference]: Without dead ends: 8680 [2021-11-06 14:21:59,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:21:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8680 states. [2021-11-06 14:21:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8680 to 7203. [2021-11-06 14:21:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7203 states, 7048 states have (on average 1.3230703745743473) internal successors, (9325), 7058 states have internal predecessors, (9325), 96 states have call successors, (96), 56 states have call predecessors, (96), 56 states have return successors, (216), 96 states have call predecessors, (216), 96 states have call successors, (216) [2021-11-06 14:21:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7203 states to 7203 states and 9637 transitions. [2021-11-06 14:21:59,758 INFO L78 Accepts]: Start accepts. Automaton has 7203 states and 9637 transitions. Word has length 85 [2021-11-06 14:21:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:59,759 INFO L470 AbstractCegarLoop]: Abstraction has 7203 states and 9637 transitions. [2021-11-06 14:21:59,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7203 states and 9637 transitions. [2021-11-06 14:21:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 14:21:59,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:59,768 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:59,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:21:59,768 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:59,769 INFO L85 PathProgramCache]: Analyzing trace with hash 851032018, now seen corresponding path program 1 times [2021-11-06 14:21:59,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:59,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224240885] [2021-11-06 14:21:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:59,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-06 14:21:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-06 14:22:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:22:00,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:00,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224240885] [2021-11-06 14:22:00,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224240885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:22:00,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:22:00,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:22:00,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441019790] [2021-11-06 14:22:00,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:22:00,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:22:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:22:00,028 INFO L87 Difference]: Start difference. First operand 7203 states and 9637 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 14:22:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:06,106 INFO L93 Difference]: Finished difference Result 15190 states and 20358 transitions. [2021-11-06 14:22:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:22:06,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 89 [2021-11-06 14:22:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:06,140 INFO L225 Difference]: With dead ends: 15190 [2021-11-06 14:22:06,141 INFO L226 Difference]: Without dead ends: 7997 [2021-11-06 14:22:06,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:22:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7997 states. [2021-11-06 14:22:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7997 to 7827. [2021-11-06 14:22:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7827 states, 7632 states have (on average 1.320754716981132) internal successors, (10080), 7646 states have internal predecessors, (10080), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7827 states to 7827 states and 10464 transitions. [2021-11-06 14:22:06,520 INFO L78 Accepts]: Start accepts. Automaton has 7827 states and 10464 transitions. Word has length 89 [2021-11-06 14:22:06,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:06,521 INFO L470 AbstractCegarLoop]: Abstraction has 7827 states and 10464 transitions. [2021-11-06 14:22:06,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 14:22:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7827 states and 10464 transitions. [2021-11-06 14:22:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 14:22:06,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:06,527 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:06,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:22:06,528 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash -91042458, now seen corresponding path program 1 times [2021-11-06 14:22:06,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:06,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463674130] [2021-11-06 14:22:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:06,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:22:06,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:06,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463674130] [2021-11-06 14:22:06,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463674130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:22:06,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:22:06,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:22:06,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863765026] [2021-11-06 14:22:06,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:22:06,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:22:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:22:06,744 INFO L87 Difference]: Start difference. First operand 7827 states and 10464 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:07,075 INFO L93 Difference]: Finished difference Result 17325 states and 23224 transitions. [2021-11-06 14:22:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:22:07,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-06 14:22:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:07,112 INFO L225 Difference]: With dead ends: 17325 [2021-11-06 14:22:07,112 INFO L226 Difference]: Without dead ends: 9508 [2021-11-06 14:22:07,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:22:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9508 states. [2021-11-06 14:22:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9508 to 7843. [2021-11-06 14:22:07,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 7648 states have (on average 1.3200836820083681) internal successors, (10096), 7662 states have internal predecessors, (10096), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 10480 transitions. [2021-11-06 14:22:07,517 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 10480 transitions. Word has length 87 [2021-11-06 14:22:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:07,517 INFO L470 AbstractCegarLoop]: Abstraction has 7843 states and 10480 transitions. [2021-11-06 14:22:07,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 10480 transitions. [2021-11-06 14:22:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 14:22:07,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:07,524 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:07,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:22:07,524 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1707930391, now seen corresponding path program 1 times [2021-11-06 14:22:07,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:07,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405328317] [2021-11-06 14:22:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:07,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:22:07,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:07,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405328317] [2021-11-06 14:22:07,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405328317] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:07,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872128717] [2021-11-06 14:22:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:07,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:22:07,711 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) [2021-11-06 14:22:07,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:22:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:08,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:22:08,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:22:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:22:08,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872128717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:08,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:22:08,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:22:08,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938980389] [2021-11-06 14:22:08,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:22:08,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:22:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:22:08,694 INFO L87 Difference]: Start difference. First operand 7843 states and 10480 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:09,126 INFO L93 Difference]: Finished difference Result 19054 states and 25596 transitions. [2021-11-06 14:22:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:22:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 88 [2021-11-06 14:22:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:09,165 INFO L225 Difference]: With dead ends: 19054 [2021-11-06 14:22:09,166 INFO L226 Difference]: Without dead ends: 11221 [2021-11-06 14:22:09,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:22:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11221 states. [2021-11-06 14:22:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11221 to 7875. [2021-11-06 14:22:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7875 states, 7680 states have (on average 1.3197916666666667) internal successors, (10136), 7694 states have internal predecessors, (10136), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7875 states to 7875 states and 10520 transitions. [2021-11-06 14:22:09,579 INFO L78 Accepts]: Start accepts. Automaton has 7875 states and 10520 transitions. Word has length 88 [2021-11-06 14:22:09,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:09,579 INFO L470 AbstractCegarLoop]: Abstraction has 7875 states and 10520 transitions. [2021-11-06 14:22:09,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 7875 states and 10520 transitions. [2021-11-06 14:22:09,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 14:22:09,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:09,585 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:09,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 14:22:09,803 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,SelfDestructingSolverStorable11 [2021-11-06 14:22:09,804 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1204286710, now seen corresponding path program 1 times [2021-11-06 14:22:09,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:09,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560412748] [2021-11-06 14:22:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:09,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:22:10,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:10,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560412748] [2021-11-06 14:22:10,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560412748] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:10,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587411485] [2021-11-06 14:22:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:10,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:10,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:22:10,077 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) [2021-11-06 14:22:10,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:22:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:10,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 3031 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 14:22:10,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:22:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:22:11,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587411485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:22:11,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:22:11,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-06 14:22:11,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920093492] [2021-11-06 14:22:11,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:22:11,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:11,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:22:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:22:11,092 INFO L87 Difference]: Start difference. First operand 7875 states and 10520 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:11,616 INFO L93 Difference]: Finished difference Result 20051 states and 26924 transitions. [2021-11-06 14:22:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:22:11,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 90 [2021-11-06 14:22:11,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:11,654 INFO L225 Difference]: With dead ends: 20051 [2021-11-06 14:22:11,655 INFO L226 Difference]: Without dead ends: 12186 [2021-11-06 14:22:11,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:22:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12186 states. [2021-11-06 14:22:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12186 to 7867. [2021-11-06 14:22:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7867 states, 7672 states have (on average 1.3201251303441084) internal successors, (10128), 7686 states have internal predecessors, (10128), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7867 states to 7867 states and 10512 transitions. [2021-11-06 14:22:12,013 INFO L78 Accepts]: Start accepts. Automaton has 7867 states and 10512 transitions. Word has length 90 [2021-11-06 14:22:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:12,013 INFO L470 AbstractCegarLoop]: Abstraction has 7867 states and 10512 transitions. [2021-11-06 14:22:12,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7867 states and 10512 transitions. [2021-11-06 14:22:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 14:22:12,018 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:12,018 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:12,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 14:22:12,243 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,SelfDestructingSolverStorable12 [2021-11-06 14:22:12,244 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1858763835, now seen corresponding path program 2 times [2021-11-06 14:22:12,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:12,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32476965] [2021-11-06 14:22:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:12,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:22:12,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:12,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32476965] [2021-11-06 14:22:12,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32476965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:12,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132920032] [2021-11-06 14:22:12,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:22:12,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:22:12,514 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) [2021-11-06 14:22:12,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:22:13,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 14:22:13,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:22:13,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 14:22:13,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:22:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:22:13,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132920032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:22:13,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:22:13,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-06 14:22:13,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088393228] [2021-11-06 14:22:13,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:22:13,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:22:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:22:13,482 INFO L87 Difference]: Start difference. First operand 7867 states and 10512 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:15,978 INFO L93 Difference]: Finished difference Result 15732 states and 21020 transitions. [2021-11-06 14:22:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:22:15,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-06 14:22:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:16,010 INFO L225 Difference]: With dead ends: 15732 [2021-11-06 14:22:16,010 INFO L226 Difference]: Without dead ends: 7874 [2021-11-06 14:22:16,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:22:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7874 states. [2021-11-06 14:22:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7874 to 7868. [2021-11-06 14:22:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7868 states, 7673 states have (on average 1.3200834093574874) internal successors, (10129), 7687 states have internal predecessors, (10129), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7868 states to 7868 states and 10513 transitions. [2021-11-06 14:22:16,405 INFO L78 Accepts]: Start accepts. Automaton has 7868 states and 10513 transitions. Word has length 91 [2021-11-06 14:22:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:16,406 INFO L470 AbstractCegarLoop]: Abstraction has 7868 states and 10513 transitions. [2021-11-06 14:22:16,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7868 states and 10513 transitions. [2021-11-06 14:22:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 14:22:16,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:16,412 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:16,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 14:22:16,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:16,628 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1218173902, now seen corresponding path program 1 times [2021-11-06 14:22:16,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:16,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412721002] [2021-11-06 14:22:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:16,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:22:16,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:16,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412721002] [2021-11-06 14:22:16,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412721002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:16,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835934845] [2021-11-06 14:22:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:16,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:16,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:22:16,834 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) [2021-11-06 14:22:16,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 14:22:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:17,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 14:22:17,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:22:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:22:17,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835934845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:17,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:22:17,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 14:22:17,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585668568] [2021-11-06 14:22:17,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:22:17,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:17,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:22:17,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:22:17,757 INFO L87 Difference]: Start difference. First operand 7868 states and 10513 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-11-06 14:22:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:18,140 INFO L93 Difference]: Finished difference Result 20792 states and 27953 transitions. [2021-11-06 14:22:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:22:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 92 [2021-11-06 14:22:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:18,186 INFO L225 Difference]: With dead ends: 20792 [2021-11-06 14:22:18,187 INFO L226 Difference]: Without dead ends: 12935 [2021-11-06 14:22:18,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:22:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12935 states. [2021-11-06 14:22:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12935 to 7876. [2021-11-06 14:22:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7681 states have (on average 1.3197500325478453) internal successors, (10137), 7695 states have internal predecessors, (10137), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 10521 transitions. [2021-11-06 14:22:18,642 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 10521 transitions. Word has length 92 [2021-11-06 14:22:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:18,643 INFO L470 AbstractCegarLoop]: Abstraction has 7876 states and 10521 transitions. [2021-11-06 14:22:18,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2021-11-06 14:22:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 10521 transitions. [2021-11-06 14:22:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 14:22:18,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:18,647 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:18,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 14:22:18,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 14:22:18,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1527104548, now seen corresponding path program 2 times [2021-11-06 14:22:18,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:18,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919418943] [2021-11-06 14:22:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:18,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 14:22:19,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:19,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919418943] [2021-11-06 14:22:19,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919418943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:22:19,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:22:19,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:22:19,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891519129] [2021-11-06 14:22:19,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:22:19,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:19,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:22:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:22:19,089 INFO L87 Difference]: Start difference. First operand 7876 states and 10521 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:19,519 INFO L93 Difference]: Finished difference Result 17034 states and 22861 transitions. [2021-11-06 14:22:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:22:19,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-06 14:22:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:19,550 INFO L225 Difference]: With dead ends: 17034 [2021-11-06 14:22:19,550 INFO L226 Difference]: Without dead ends: 9105 [2021-11-06 14:22:19,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:22:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9105 states. [2021-11-06 14:22:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9105 to 7876. [2021-11-06 14:22:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7681 states have (on average 1.3155839083452676) internal successors, (10105), 7695 states have internal predecessors, (10105), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 10489 transitions. [2021-11-06 14:22:20,091 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 10489 transitions. Word has length 95 [2021-11-06 14:22:20,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:20,091 INFO L470 AbstractCegarLoop]: Abstraction has 7876 states and 10489 transitions. [2021-11-06 14:22:20,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 10489 transitions. [2021-11-06 14:22:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 14:22:20,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:20,096 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:20,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 14:22:20,097 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 501014724, now seen corresponding path program 1 times [2021-11-06 14:22:20,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:20,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945414908] [2021-11-06 14:22:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:20,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 14:22:20,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:20,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945414908] [2021-11-06 14:22:20,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945414908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:22:20,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:22:20,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:22:20,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943877311] [2021-11-06 14:22:20,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:22:20,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:22:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:22:20,381 INFO L87 Difference]: Start difference. First operand 7876 states and 10489 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:20,997 INFO L93 Difference]: Finished difference Result 17095 states and 22831 transitions. [2021-11-06 14:22:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:22:20,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 99 [2021-11-06 14:22:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:21,034 INFO L225 Difference]: With dead ends: 17095 [2021-11-06 14:22:21,035 INFO L226 Difference]: Without dead ends: 9230 [2021-11-06 14:22:21,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 14:22:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9230 states. [2021-11-06 14:22:21,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9230 to 7900. [2021-11-06 14:22:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7705 states have (on average 1.3146009085009733) internal successors, (10129), 7719 states have internal predecessors, (10129), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 10513 transitions. [2021-11-06 14:22:21,459 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 10513 transitions. Word has length 99 [2021-11-06 14:22:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:21,459 INFO L470 AbstractCegarLoop]: Abstraction has 7900 states and 10513 transitions. [2021-11-06 14:22:21,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 10513 transitions. [2021-11-06 14:22:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 14:22:21,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:21,464 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:21,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 14:22:21,465 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -951014808, now seen corresponding path program 1 times [2021-11-06 14:22:21,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:21,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901970171] [2021-11-06 14:22:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:21,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 14:22:21,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:21,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901970171] [2021-11-06 14:22:21,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901970171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:22:21,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:22:21,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:22:21,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749402059] [2021-11-06 14:22:21,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:22:21,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:22:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:22:21,654 INFO L87 Difference]: Start difference. First operand 7900 states and 10513 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:22,026 INFO L93 Difference]: Finished difference Result 17322 states and 23149 transitions. [2021-11-06 14:22:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:22:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 101 [2021-11-06 14:22:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:22,058 INFO L225 Difference]: With dead ends: 17322 [2021-11-06 14:22:22,059 INFO L226 Difference]: Without dead ends: 9433 [2021-11-06 14:22:22,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:22:22,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9433 states. [2021-11-06 14:22:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9433 to 8076. [2021-11-06 14:22:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8076 states, 7881 states have (on average 1.3177261768811064) internal successors, (10385), 7895 states have internal predecessors, (10385), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8076 states to 8076 states and 10769 transitions. [2021-11-06 14:22:22,544 INFO L78 Accepts]: Start accepts. Automaton has 8076 states and 10769 transitions. Word has length 101 [2021-11-06 14:22:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:22,545 INFO L470 AbstractCegarLoop]: Abstraction has 8076 states and 10769 transitions. [2021-11-06 14:22:22,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8076 states and 10769 transitions. [2021-11-06 14:22:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 14:22:22,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:22,550 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:22,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 14:22:22,551 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:22,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:22,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1909615424, now seen corresponding path program 1 times [2021-11-06 14:22:22,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:22,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624780812] [2021-11-06 14:22:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:22,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-06 14:22:22,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:22,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624780812] [2021-11-06 14:22:22,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624780812] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:22,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627664408] [2021-11-06 14:22:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:22,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:22,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:22:22,943 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) [2021-11-06 14:22:22,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 14:22:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:24,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 3157 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 14:22:24,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:22:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-06 14:22:24,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627664408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:24,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:22:24,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:22:24,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599085670] [2021-11-06 14:22:24,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:22:24,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:22:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:22:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:22:24,735 INFO L87 Difference]: Start difference. First operand 8076 states and 10769 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:22:25,078 INFO L93 Difference]: Finished difference Result 16143 states and 21528 transitions. [2021-11-06 14:22:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:22:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 105 [2021-11-06 14:22:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:22:25,105 INFO L225 Difference]: With dead ends: 16143 [2021-11-06 14:22:25,106 INFO L226 Difference]: Without dead ends: 8077 [2021-11-06 14:22:25,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:22:25,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8077 states. [2021-11-06 14:22:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8077 to 8077. [2021-11-06 14:22:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8077 states, 7882 states have (on average 1.3176858665313371) internal successors, (10386), 7896 states have internal predecessors, (10386), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:22:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 10770 transitions. [2021-11-06 14:22:25,450 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 10770 transitions. Word has length 105 [2021-11-06 14:22:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:22:25,450 INFO L470 AbstractCegarLoop]: Abstraction has 8077 states and 10770 transitions. [2021-11-06 14:22:25,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:22:25,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 10770 transitions. [2021-11-06 14:22:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 14:22:25,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:22:25,456 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:22:25,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 14:22:25,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:25,684 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:22:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:22:25,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1330613651, now seen corresponding path program 2 times [2021-11-06 14:22:25,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:22:25,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669714552] [2021-11-06 14:22:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:22:25,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:22:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:22:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-06 14:22:26,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:22:26,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669714552] [2021-11-06 14:22:26,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669714552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:22:26,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099889476] [2021-11-06 14:22:26,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:22:26,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:22:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:22:26,032 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) [2021-11-06 14:22:26,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 14:23:11,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 14:23:11,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:23:11,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 3163 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 14:23:11,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:23:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-06 14:23:11,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099889476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:23:11,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:23:11,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 14:23:11,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318582996] [2021-11-06 14:23:11,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:23:11,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:23:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:23:11,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:23:11,504 INFO L87 Difference]: Start difference. First operand 8077 states and 10770 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:23:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:23:11,934 INFO L93 Difference]: Finished difference Result 16144 states and 21529 transitions. [2021-11-06 14:23:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:23:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 106 [2021-11-06 14:23:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:23:11,961 INFO L225 Difference]: With dead ends: 16144 [2021-11-06 14:23:11,961 INFO L226 Difference]: Without dead ends: 8078 [2021-11-06 14:23:11,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:23:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2021-11-06 14:23:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 8078. [2021-11-06 14:23:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8078 states, 7883 states have (on average 1.3176455664087277) internal successors, (10387), 7897 states have internal predecessors, (10387), 96 states have call successors, (96), 56 states have call predecessors, (96), 96 states have return successors, (288), 136 states have call predecessors, (288), 96 states have call successors, (288) [2021-11-06 14:23:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8078 states to 8078 states and 10771 transitions. [2021-11-06 14:23:12,294 INFO L78 Accepts]: Start accepts. Automaton has 8078 states and 10771 transitions. Word has length 106 [2021-11-06 14:23:12,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:23:12,294 INFO L470 AbstractCegarLoop]: Abstraction has 8078 states and 10771 transitions. [2021-11-06 14:23:12,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:23:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8078 states and 10771 transitions. [2021-11-06 14:23:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:23:12,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:23:12,300 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:23:12,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-06 14:23:12,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:23:12,520 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:23:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:23:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash -561427872, now seen corresponding path program 3 times [2021-11-06 14:23:12,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:23:12,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953652889] [2021-11-06 14:23:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:23:12,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:23:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:23:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-06 14:23:12,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:23:12,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953652889] [2021-11-06 14:23:12,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953652889] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:23:12,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053958538] [2021-11-06 14:23:12,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 14:23:12,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:23:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:23:12,889 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) [2021-11-06 14:23:12,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15