./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.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-3.0/module_get_put-drivers-block-pktcdvd.ko.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 f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:48:50,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:48:50,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:48:50,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:48:50,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:48:50,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:48:50,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:48:50,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:48:50,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:48:50,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:48:50,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:48:50,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:48:50,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:48:50,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:48:51,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:48:51,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:48:51,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:48:51,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:48:51,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:48:51,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:48:51,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:48:51,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:48:51,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:48:51,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:48:51,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:48:51,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:48:51,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:48:51,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:48:51,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:48:51,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:48:51,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:48:51,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:48:51,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:48:51,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:48:51,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:48:51,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:48:51,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:48:51,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:48:51,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:48:51,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:48:51,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:48:51,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:48:51,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:48:51,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:48:51,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:48:51,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:48:51,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:48:51,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:48:51,058 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:48:51,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:48:51,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:48:51,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:48:51,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:48:51,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:48:51,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:48:51,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:48:51,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:48:51,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:48:51,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:48:51,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:48:51,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:48:51,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:48:51,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:48:51,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:48:51,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:48:51,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:48:51,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:48:51,061 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:48:51,062 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:48:51,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:48:51,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:48:51,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb [2021-11-06 11:48:51,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:48:51,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:48:51,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:48:51,279 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:48:51,279 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:48:51,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-06 11:48:51,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a278c12/bce6b194260f457689dc056d770fe700/FLAGc6fa8b555 [2021-11-06 11:48:51,950 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:48:51,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-06 11:48:51,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a278c12/bce6b194260f457689dc056d770fe700/FLAGc6fa8b555 [2021-11-06 11:48:52,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a278c12/bce6b194260f457689dc056d770fe700 [2021-11-06 11:48:52,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:48:52,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:48:52,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:48:52,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:48:52,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:48:52,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:48:52" (1/1) ... [2021-11-06 11:48:52,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f249886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:52, skipping insertion in model container [2021-11-06 11:48:52,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:48:52" (1/1) ... [2021-11-06 11:48:52,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:48:52,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:48:53,593 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-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-06 11:48:53,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:48:53,674 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:48:53,933 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-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-06 11:48:53,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:48:54,014 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:48:54,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54 WrapperNode [2021-11-06 11:48:54,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:48:54,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:48:54,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:48:54,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:48:54,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:48:54,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:48:54,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:48:54,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:48:54,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:48:54,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:48:54,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:48:54,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:48:54,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (1/1) ... [2021-11-06 11:48:54,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:48:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:48:54,817 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 11:48:54,875 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 11:48:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 11:48:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 11:48:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:48:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:48:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:48:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:48:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 11:48:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-06 11:48:54,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-06 11:48:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 11:48:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:48:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:48:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:48:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:48:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_check_events [2021-11-06 11:48:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_check_events [2021-11-06 11:48:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:48:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:48:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:48:55,546 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,570 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,574 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,578 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,597 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,599 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,612 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,613 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:48:55,621 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 11:49:11,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1046: assume false; [2021-11-06 11:49:11,236 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1047: assume !false; [2021-11-06 11:49:11,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##503: assume !false; [2021-11-06 11:49:11,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##502: assume false; [2021-11-06 11:49:11,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##65: assume false; [2021-11-06 11:49:11,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume !false; [2021-11-06 11:49:11,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##589: assume false; [2021-11-06 11:49:11,237 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##590: assume !false; [2021-11-06 11:49:11,238 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##627: assume !false; [2021-11-06 11:49:11,238 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##626: assume false; [2021-11-06 11:49:11,238 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1663: assume false; [2021-11-06 11:49:11,243 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1664: assume !false; [2021-11-06 11:49:11,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1409: assume false; [2021-11-06 11:49:11,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1410: assume !false; [2021-11-06 11:49:11,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1462: assume false; [2021-11-06 11:49:11,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1463: assume !false; [2021-11-06 11:49:11,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##958: assume !false; [2021-11-06 11:49:11,244 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##957: assume false; [2021-11-06 11:49:11,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:49:11,269 INFO L299 CfgBuilder]: Removed 1773 assume(true) statements. [2021-11-06 11:49:11,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:11 BoogieIcfgContainer [2021-11-06 11:49:11,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:49:11,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:49:11,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:49:11,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:49:11,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:48:52" (1/3) ... [2021-11-06 11:49:11,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303e6ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:11, skipping insertion in model container [2021-11-06 11:49:11,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:48:54" (2/3) ... [2021-11-06 11:49:11,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303e6ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:11, skipping insertion in model container [2021-11-06 11:49:11,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:11" (3/3) ... [2021-11-06 11:49:11,280 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-06 11:49:11,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:49:11,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 11:49:11,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:49:11,348 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 11:49:11,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 11:49:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 1914 states, 1903 states have (on average 1.4009458749343142) internal successors, (2666), 1908 states have internal predecessors, (2666), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 11:49:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-06 11:49:11,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:11,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:49:11,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 11:49:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -86151642, now seen corresponding path program 1 times [2021-11-06 11:49:11,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:11,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942722466] [2021-11-06 11:49:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:11,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:12,003 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 11:49:12,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:12,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942722466] [2021-11-06 11:49:12,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942722466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:12,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:12,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:49:12,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301904609] [2021-11-06 11:49:12,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:49:12,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:12,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:49:12,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:49:12,027 INFO L87 Difference]: Start difference. First operand has 1914 states, 1903 states have (on average 1.4009458749343142) internal successors, (2666), 1908 states have internal predecessors, (2666), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:12,256 INFO L93 Difference]: Finished difference Result 5669 states and 7923 transitions. [2021-11-06 11:49:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:49:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-06 11:49:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:12,284 INFO L225 Difference]: With dead ends: 5669 [2021-11-06 11:49:12,284 INFO L226 Difference]: Without dead ends: 3738 [2021-11-06 11:49:12,294 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 11:49:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2021-11-06 11:49:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3730. [2021-11-06 11:49:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3715 states have (on average 1.363391655450875) internal successors, (5065), 3719 states have internal predecessors, (5065), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5077 transitions. [2021-11-06 11:49:12,464 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5077 transitions. Word has length 13 [2021-11-06 11:49:12,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:12,465 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5077 transitions. [2021-11-06 11:49:12,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5077 transitions. [2021-11-06 11:49:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 11:49:12,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:12,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:12,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:49:12,477 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 11:49:12,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 970211147, now seen corresponding path program 1 times [2021-11-06 11:49:12,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:12,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469692970] [2021-11-06 11:49:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:12,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:12,817 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 11:49:12,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:12,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469692970] [2021-11-06 11:49:12,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469692970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:12,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:12,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:49:12,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680928925] [2021-11-06 11:49:12,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:49:12,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:49:12,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:49:12,820 INFO L87 Difference]: Start difference. First operand 3730 states and 5077 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:12,968 INFO L93 Difference]: Finished difference Result 7406 states and 10086 transitions. [2021-11-06 11:49:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:49:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 11:49:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:12,990 INFO L225 Difference]: With dead ends: 7406 [2021-11-06 11:49:12,990 INFO L226 Difference]: Without dead ends: 3730 [2021-11-06 11:49:13,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:49:13,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2021-11-06 11:49:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3730. [2021-11-06 11:49:13,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3715 states have (on average 1.363122476446837) internal successors, (5064), 3719 states have internal predecessors, (5064), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5076 transitions. [2021-11-06 11:49:13,095 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5076 transitions. Word has length 65 [2021-11-06 11:49:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:13,095 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5076 transitions. [2021-11-06 11:49:13,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5076 transitions. [2021-11-06 11:49:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 11:49:13,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:13,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:13,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:49:13,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 11:49:13,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1345747310, now seen corresponding path program 1 times [2021-11-06 11:49:13,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:13,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222499117] [2021-11-06 11:49:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:13,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:13,538 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 11:49:13,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:13,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222499117] [2021-11-06 11:49:13,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222499117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:13,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:13,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:49:13,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687116832] [2021-11-06 11:49:13,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:49:13,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:49:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:49:13,541 INFO L87 Difference]: Start difference. First operand 3730 states and 5076 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:13,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:13,771 INFO L93 Difference]: Finished difference Result 11046 states and 15050 transitions. [2021-11-06 11:49:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:49:13,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 11:49:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:13,797 INFO L225 Difference]: With dead ends: 11046 [2021-11-06 11:49:13,797 INFO L226 Difference]: Without dead ends: 7372 [2021-11-06 11:49:13,806 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 11:49:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2021-11-06 11:49:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 3750. [2021-11-06 11:49:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 3735 states have (on average 1.3633199464524766) internal successors, (5092), 3739 states have internal predecessors, (5092), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5104 transitions. [2021-11-06 11:49:13,928 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5104 transitions. Word has length 69 [2021-11-06 11:49:13,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:13,929 INFO L470 AbstractCegarLoop]: Abstraction has 3750 states and 5104 transitions. [2021-11-06 11:49:13,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5104 transitions. [2021-11-06 11:49:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 11:49:13,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:13,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:13,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:49:13,932 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 11:49:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash 875382655, now seen corresponding path program 1 times [2021-11-06 11:49:13,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:13,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734321123] [2021-11-06 11:49:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:13,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:14,322 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 11:49:14,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:14,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734321123] [2021-11-06 11:49:14,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734321123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:14,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:14,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:49:14,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847905187] [2021-11-06 11:49:14,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:49:14,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:49:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:49:14,325 INFO L87 Difference]: Start difference. First operand 3750 states and 5104 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:14,468 INFO L93 Difference]: Finished difference Result 7448 states and 10143 transitions. [2021-11-06 11:49:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:49:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 11:49:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:14,481 INFO L225 Difference]: With dead ends: 7448 [2021-11-06 11:49:14,481 INFO L226 Difference]: Without dead ends: 3750 [2021-11-06 11:49:14,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 11:49:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-11-06 11:49:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2021-11-06 11:49:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 3735 states have (on average 1.3630522088353414) internal successors, (5091), 3739 states have internal predecessors, (5091), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5103 transitions. [2021-11-06 11:49:14,578 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5103 transitions. Word has length 72 [2021-11-06 11:49:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:14,580 INFO L470 AbstractCegarLoop]: Abstraction has 3750 states and 5103 transitions. [2021-11-06 11:49:14,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5103 transitions. [2021-11-06 11:49:14,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 11:49:14,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:14,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:14,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 11:49:14,583 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 11:49:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash 174558702, now seen corresponding path program 1 times [2021-11-06 11:49:14,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:14,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516465574] [2021-11-06 11:49:14,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:14,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:14,879 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 11:49:14,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:14,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516465574] [2021-11-06 11:49:14,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516465574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:14,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:14,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:49:14,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59169825] [2021-11-06 11:49:14,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:49:14,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:49:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:49:14,881 INFO L87 Difference]: Start difference. First operand 3750 states and 5103 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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 11:49:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:15,084 INFO L93 Difference]: Finished difference Result 7477 states and 10178 transitions. [2021-11-06 11:49:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:49:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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 83 [2021-11-06 11:49:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:15,097 INFO L225 Difference]: With dead ends: 7477 [2021-11-06 11:49:15,098 INFO L226 Difference]: Without dead ends: 3750 [2021-11-06 11:49:15,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:49:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-11-06 11:49:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2021-11-06 11:49:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 3735 states have (on average 1.3627844712182062) internal successors, (5090), 3739 states have internal predecessors, (5090), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5102 transitions. [2021-11-06 11:49:15,184 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5102 transitions. Word has length 83 [2021-11-06 11:49:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:15,185 INFO L470 AbstractCegarLoop]: Abstraction has 3750 states and 5102 transitions. [2021-11-06 11:49:15,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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 11:49:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5102 transitions. [2021-11-06 11:49:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 11:49:15,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:15,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:15,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 11:49:15,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 11:49:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:15,188 INFO L85 PathProgramCache]: Analyzing trace with hash 309930551, now seen corresponding path program 1 times [2021-11-06 11:49:15,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:15,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107720555] [2021-11-06 11:49:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:15,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:15,371 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 11:49:15,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:15,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107720555] [2021-11-06 11:49:15,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107720555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:15,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:15,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:49:15,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261741479] [2021-11-06 11:49:15,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:49:15,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:15,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:49:15,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:49:15,377 INFO L87 Difference]: Start difference. First operand 3750 states and 5102 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:15,656 INFO L93 Difference]: Finished difference Result 18479 states and 25178 transitions. [2021-11-06 11:49:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:49:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 11:49:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:15,704 INFO L225 Difference]: With dead ends: 18479 [2021-11-06 11:49:15,704 INFO L226 Difference]: Without dead ends: 14780 [2021-11-06 11:49:15,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:49:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14780 states. [2021-11-06 11:49:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14780 to 3752. [2021-11-06 11:49:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3752 states, 3737 states have (on average 1.3625903130853625) internal successors, (5092), 3741 states have internal predecessors, (5092), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5104 transitions. [2021-11-06 11:49:15,996 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5104 transitions. Word has length 85 [2021-11-06 11:49:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:15,997 INFO L470 AbstractCegarLoop]: Abstraction has 3752 states and 5104 transitions. [2021-11-06 11:49:15,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5104 transitions. [2021-11-06 11:49:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 11:49:16,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:16,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:16,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 11:49:16,003 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 11:49:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash 302728500, now seen corresponding path program 1 times [2021-11-06 11:49:16,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:16,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915062618] [2021-11-06 11:49:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:16,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:16,338 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 11:49:16,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:16,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915062618] [2021-11-06 11:49:16,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915062618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:16,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:16,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:49:16,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244226268] [2021-11-06 11:49:16,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:49:16,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:49:16,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:49:16,339 INFO L87 Difference]: Start difference. First operand 3752 states and 5104 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 11:49:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:18,179 INFO L93 Difference]: Finished difference Result 17460 states and 23924 transitions. [2021-11-06 11:49:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:49:18,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 86 [2021-11-06 11:49:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:18,208 INFO L225 Difference]: With dead ends: 17460 [2021-11-06 11:49:18,209 INFO L226 Difference]: Without dead ends: 13716 [2021-11-06 11:49:18,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:49:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13716 states. [2021-11-06 11:49:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13716 to 3752. [2021-11-06 11:49:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3752 states, 3737 states have (on average 1.3623227187583624) internal successors, (5091), 3741 states have internal predecessors, (5091), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5103 transitions. [2021-11-06 11:49:18,410 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5103 transitions. Word has length 86 [2021-11-06 11:49:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:18,410 INFO L470 AbstractCegarLoop]: Abstraction has 3752 states and 5103 transitions. [2021-11-06 11:49:18,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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 11:49:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5103 transitions. [2021-11-06 11:49:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 11:49:18,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:18,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:18,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 11:49:18,413 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 11:49:18,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:18,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1152728039, now seen corresponding path program 1 times [2021-11-06 11:49:18,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:18,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935214762] [2021-11-06 11:49:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:18,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:18,790 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 11:49:18,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:18,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935214762] [2021-11-06 11:49:18,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935214762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:18,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:18,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:49:18,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654150626] [2021-11-06 11:49:18,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:49:18,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:49:18,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:49:18,792 INFO L87 Difference]: Start difference. First operand 3752 states and 5103 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 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 11:49:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:25,179 INFO L93 Difference]: Finished difference Result 97510 states and 135591 transitions. [2021-11-06 11:49:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-06 11:49:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 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 89 [2021-11-06 11:49:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:25,403 INFO L225 Difference]: With dead ends: 97510 [2021-11-06 11:49:25,404 INFO L226 Difference]: Without dead ends: 93778 [2021-11-06 11:49:25,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 11:49:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93778 states. [2021-11-06 11:49:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93778 to 7438. [2021-11-06 11:49:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7438 states, 7413 states have (on average 1.362741130446513) internal successors, (10102), 7417 states have internal predecessors, (10102), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 11:49:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 10126 transitions. [2021-11-06 11:49:26,423 INFO L78 Accepts]: Start accepts. Automaton has 7438 states and 10126 transitions. Word has length 89 [2021-11-06 11:49:26,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:26,423 INFO L470 AbstractCegarLoop]: Abstraction has 7438 states and 10126 transitions. [2021-11-06 11:49:26,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 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 11:49:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7438 states and 10126 transitions. [2021-11-06 11:49:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 11:49:26,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:26,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:26,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 11:49:26,426 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 11:49:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:26,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1520097109, now seen corresponding path program 1 times [2021-11-06 11:49:26,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:26,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072727648] [2021-11-06 11:49:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:26,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:27,805 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 11:49:27,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:27,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072727648] [2021-11-06 11:49:27,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072727648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:27,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:27,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:49:27,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341608270] [2021-11-06 11:49:27,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:49:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:49:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:49:27,806 INFO L87 Difference]: Start difference. First operand 7438 states and 10126 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 11:49:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:28,150 INFO L93 Difference]: Finished difference Result 11122 states and 15138 transitions. [2021-11-06 11:49:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:49:28,153 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 92 [2021-11-06 11:49:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:28,165 INFO L225 Difference]: With dead ends: 11122 [2021-11-06 11:49:28,165 INFO L226 Difference]: Without dead ends: 7428 [2021-11-06 11:49:28,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 11:49:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2021-11-06 11:49:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 7428. [2021-11-06 11:49:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 7403 states have (on average 1.362420640280967) internal successors, (10086), 7407 states have internal predecessors, (10086), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 11:49:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 10110 transitions. [2021-11-06 11:49:28,659 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 10110 transitions. Word has length 92 [2021-11-06 11:49:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:28,659 INFO L470 AbstractCegarLoop]: Abstraction has 7428 states and 10110 transitions. [2021-11-06 11:49:28,660 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 11:49:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 10110 transitions. [2021-11-06 11:49:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 11:49:28,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:28,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:28,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 11:49:28,663 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 11:49:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1819233965, now seen corresponding path program 1 times [2021-11-06 11:49:28,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:28,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797583030] [2021-11-06 11:49:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:28,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:28,860 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 11:49:28,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:28,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797583030] [2021-11-06 11:49:28,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797583030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:28,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:28,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:49:28,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676241330] [2021-11-06 11:49:28,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:49:28,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:49:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:49:28,864 INFO L87 Difference]: Start difference. First operand 7428 states and 10110 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 11:49:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:31,398 INFO L93 Difference]: Finished difference Result 11135 states and 15154 transitions. [2021-11-06 11:49:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:49:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 11:49:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:31,414 INFO L225 Difference]: With dead ends: 11135 [2021-11-06 11:49:31,414 INFO L226 Difference]: Without dead ends: 7441 [2021-11-06 11:49:31,422 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 11:49:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2021-11-06 11:49:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 7428. [2021-11-06 11:49:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 7403 states have (on average 1.3612049169255707) internal successors, (10077), 7407 states have internal predecessors, (10077), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 11:49:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 10101 transitions. [2021-11-06 11:49:31,765 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 10101 transitions. Word has length 99 [2021-11-06 11:49:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:31,766 INFO L470 AbstractCegarLoop]: Abstraction has 7428 states and 10101 transitions. [2021-11-06 11:49:31,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 11:49:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 10101 transitions. [2021-11-06 11:49:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 11:49:31,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:31,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:31,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 11:49:31,770 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 11:49:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash 831220146, now seen corresponding path program 1 times [2021-11-06 11:49:31,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:31,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64332518] [2021-11-06 11:49:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:31,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:32,245 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 11:49:32,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:32,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64332518] [2021-11-06 11:49:32,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64332518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:32,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:32,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:49:32,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077628731] [2021-11-06 11:49:32,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:49:32,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:32,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:49:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:49:32,247 INFO L87 Difference]: Start difference. First operand 7428 states and 10101 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:49:37,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:37,679 INFO L93 Difference]: Finished difference Result 74226 states and 102109 transitions. [2021-11-06 11:49:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 11:49:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-06 11:49:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:37,813 INFO L225 Difference]: With dead ends: 74226 [2021-11-06 11:49:37,813 INFO L226 Difference]: Without dead ends: 66846 [2021-11-06 11:49:37,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-06 11:49:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66846 states. [2021-11-06 11:49:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66846 to 7436. [2021-11-06 11:49:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7436 states, 7411 states have (on average 1.3608150047227094) internal successors, (10085), 7415 states have internal predecessors, (10085), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 11:49:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7436 states to 7436 states and 10109 transitions. [2021-11-06 11:49:38,785 INFO L78 Accepts]: Start accepts. Automaton has 7436 states and 10109 transitions. Word has length 100 [2021-11-06 11:49:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:38,786 INFO L470 AbstractCegarLoop]: Abstraction has 7436 states and 10109 transitions. [2021-11-06 11:49:38,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:49:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 7436 states and 10109 transitions. [2021-11-06 11:49:38,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 11:49:38,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:38,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:38,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 11:49:38,789 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 11:49:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash 99252720, now seen corresponding path program 1 times [2021-11-06 11:49:38,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:38,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765381800] [2021-11-06 11:49:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:38,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:40,126 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 11:49:40,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:40,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765381800] [2021-11-06 11:49:40,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765381800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:40,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:40,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:49:40,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025168066] [2021-11-06 11:49:40,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:49:40,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:40,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:49:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:49:40,128 INFO L87 Difference]: Start difference. First operand 7436 states and 10109 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:49:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:40,419 INFO L93 Difference]: Finished difference Result 7454 states and 10122 transitions. [2021-11-06 11:49:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:49:40,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-06 11:49:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:40,426 INFO L225 Difference]: With dead ends: 7454 [2021-11-06 11:49:40,426 INFO L226 Difference]: Without dead ends: 3746 [2021-11-06 11:49:40,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 11:49:40,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-11-06 11:49:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3746. [2021-11-06 11:49:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3746 states, 3731 states have (on average 1.3588850174216027) internal successors, (5070), 3735 states have internal predecessors, (5070), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-06 11:49:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5082 transitions. [2021-11-06 11:49:40,640 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5082 transitions. Word has length 100 [2021-11-06 11:49:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:40,640 INFO L470 AbstractCegarLoop]: Abstraction has 3746 states and 5082 transitions. [2021-11-06 11:49:40,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:49:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5082 transitions. [2021-11-06 11:49:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 11:49:40,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:40,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:40,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 11:49:40,644 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 11:49:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:40,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1032385025, now seen corresponding path program 1 times [2021-11-06 11:49:40,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:40,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158860926] [2021-11-06 11:49:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:40,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:45,920 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 11:49:45,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:45,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158860926] [2021-11-06 11:49:45,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158860926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:45,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:45,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 11:49:45,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501055407] [2021-11-06 11:49:45,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 11:49:45,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 11:49:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-11-06 11:49:45,923 INFO L87 Difference]: Start difference. First operand 3746 states and 5082 transitions. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:50:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:50:53,150 INFO L93 Difference]: Finished difference Result 7899 states and 10737 transitions. [2021-11-06 11:50:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 11:50:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-06 11:50:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:50:53,157 INFO L225 Difference]: With dead ends: 7899 [2021-11-06 11:50:53,157 INFO L226 Difference]: Without dead ends: 4205 [2021-11-06 11:50:53,163 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2021-11-06 11:50:53,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2021-11-06 11:50:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 3883. [2021-11-06 11:50:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3883 states, 3863 states have (on average 1.3626714988351023) internal successors, (5264), 3867 states have internal predecessors, (5264), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-06 11:50:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5282 transitions. [2021-11-06 11:50:53,428 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5282 transitions. Word has length 100 [2021-11-06 11:50:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:50:53,428 INFO L470 AbstractCegarLoop]: Abstraction has 3883 states and 5282 transitions. [2021-11-06 11:50:53,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:50:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5282 transitions. [2021-11-06 11:50:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 11:50:53,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:50:53,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:53,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 11:50:53,431 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 11:50:53,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:50:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 961952832, now seen corresponding path program 1 times [2021-11-06 11:50:53,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:50:53,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133804810] [2021-11-06 11:50:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:50:53,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:50:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:50:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:50:53,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:50:53,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133804810] [2021-11-06 11:50:53,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133804810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:50:53,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078692247] [2021-11-06 11:50:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:50:53,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:50:53,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:50:53,600 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 11:50:53,601 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 11:50:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:50:54,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 3351 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:50:54,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:50:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:50:54,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078692247] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:50:54,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 11:50:54,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 11:50:54,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818385305] [2021-11-06 11:50:54,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:50:54,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:50:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:50:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:50:54,785 INFO L87 Difference]: Start difference. First operand 3883 states and 5282 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 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 11:50:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:50:55,583 INFO L93 Difference]: Finished difference Result 14841 states and 20188 transitions. [2021-11-06 11:50:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:50:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 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 11:50:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:50:55,600 INFO L225 Difference]: With dead ends: 14841 [2021-11-06 11:50:55,600 INFO L226 Difference]: Without dead ends: 11147 [2021-11-06 11:50:55,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 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 11:50:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11147 states. [2021-11-06 11:50:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11147 to 3903. [2021-11-06 11:50:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3883 states have (on average 1.3628637651300541) internal successors, (5292), 3887 states have internal predecessors, (5292), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-06 11:50:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 5310 transitions. [2021-11-06 11:50:55,906 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 5310 transitions. Word has length 101 [2021-11-06 11:50:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:50:55,907 INFO L470 AbstractCegarLoop]: Abstraction has 3903 states and 5310 transitions. [2021-11-06 11:50:55,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 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 11:50:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 5310 transitions. [2021-11-06 11:50:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 11:50:55,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:50:55,909 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:50:55,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 11:50:56,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 11:50:56,124 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 11:50:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:50:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -464394573, now seen corresponding path program 1 times [2021-11-06 11:50:56,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:50:56,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851838273] [2021-11-06 11:50:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:50:56,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:50:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:50:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:50:59,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:50:59,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851838273] [2021-11-06 11:50:59,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851838273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 11:50:59,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023916750] [2021-11-06 11:50:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:50:59,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:50:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:50:59,496 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 11:50:59,497 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 12:00:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 12:00:48,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-06 12:00:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 12:00:49,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1921024476 treesize of output 1916830172 Killed by 15