./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer --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 b7e9cd9997765503e815fc0399655b9b9a72bc46 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer --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 b7e9cd9997765503e815fc0399655b9b9a72bc46 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:06:49,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:06:49,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:06:49,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:06:49,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:06:49,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:06:49,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:06:49,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:06:49,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:06:49,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:06:49,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:06:50,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:06:50,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:06:50,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:06:50,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:06:50,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:06:50,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:06:50,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:06:50,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:06:50,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:06:50,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:06:50,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:06:50,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:06:50,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:06:50,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:06:50,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:06:50,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:06:50,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:06:50,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:06:50,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:06:50,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:06:50,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:06:50,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:06:50,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:06:50,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:06:50,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:06:50,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:06:50,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:06:50,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:06:50,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:06:50,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:06:50,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-11-29 21:06:50,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:06:50,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:06:50,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:06:50,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:06:50,075 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:06:50,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:06:50,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:06:50,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:06:50,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:06:50,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:06:50,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:06:50,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:06:50,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:06:50,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:06:50,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:06:50,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:06:50,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:06:50,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:06:50,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:06:50,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:06:50,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:06:50,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:06:50,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:06:50,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:06:50,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:06:50,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:06:50,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 21:06:50,080 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9cd9997765503e815fc0399655b9b9a72bc46 [2020-11-29 21:06:50,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:06:50,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:06:50,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:06:50,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:06:50,375 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:06:50,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-11-29 21:06:50,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/8bd83acda/f7e24e280ee94d9e8fbef91e2e138a08/FLAG0ce5dd5b7 [2020-11-29 21:06:51,168 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:06:51,169 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-11-29 21:06:51,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/8bd83acda/f7e24e280ee94d9e8fbef91e2e138a08/FLAG0ce5dd5b7 [2020-11-29 21:06:51,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/8bd83acda/f7e24e280ee94d9e8fbef91e2e138a08 [2020-11-29 21:06:51,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:06:51,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:06:51,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:06:51,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:06:51,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:06:51,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:06:51" (1/1) ... [2020-11-29 21:06:51,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f76aaed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:51, skipping insertion in model container [2020-11-29 21:06:51,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:06:51" (1/1) ... [2020-11-29 21:06:51,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:06:51,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:06:52,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:06:52,377 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:06:52,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:06:52,616 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:06:52,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52 WrapperNode [2020-11-29 21:06:52,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:06:52,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:06:52,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:06:52,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:06:52,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:06:52,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:06:52,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:06:52,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:06:52,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... [2020-11-29 21:06:52,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:06:52,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:06:52,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:06:52,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:06:52,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:06:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:06:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:06:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 21:06:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 21:06:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:06:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 21:06:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:06:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-29 21:06:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:06:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:06:53,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:06:54,449 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:06:54,449 INFO L298 CfgBuilder]: Removed 202 assume(true) statements. [2020-11-29 21:06:54,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:06:54 BoogieIcfgContainer [2020-11-29 21:06:54,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:06:54,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:06:54,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:06:54,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:06:54,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:06:51" (1/3) ... [2020-11-29 21:06:54,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19024024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:06:54, skipping insertion in model container [2020-11-29 21:06:54,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:06:52" (2/3) ... [2020-11-29 21:06:54,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19024024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:06:54, skipping insertion in model container [2020-11-29 21:06:54,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:06:54" (3/3) ... [2020-11-29 21:06:54,467 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-11-29 21:06:54,479 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:06:54,484 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 21:06:54,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 21:06:54,533 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:06:54,533 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:06:54,533 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:06:54,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:06:54,533 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:06:54,533 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:06:54,533 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:06:54,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:06:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-11-29 21:06:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:06:54,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:54,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:54,560 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:54,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:54,565 INFO L82 PathProgramCache]: Analyzing trace with hash 676115575, now seen corresponding path program 1 times [2020-11-29 21:06:54,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:54,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947630257] [2020-11-29 21:06:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:06:54,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947630257] [2020-11-29 21:06:54,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:54,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:06:54,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768027849] [2020-11-29 21:06:54,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:06:54,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:54,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:06:54,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:06:54,999 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 2 states. [2020-11-29 21:06:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:55,050 INFO L93 Difference]: Finished difference Result 370 states and 505 transitions. [2020-11-29 21:06:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:06:55,051 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-11-29 21:06:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:55,062 INFO L225 Difference]: With dead ends: 370 [2020-11-29 21:06:55,063 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 21:06:55,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:06:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 21:06:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-11-29 21:06:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-29 21:06:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 227 transitions. [2020-11-29 21:06:55,140 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 227 transitions. Word has length 19 [2020-11-29 21:06:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:55,140 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 227 transitions. [2020-11-29 21:06:55,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:06:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 227 transitions. [2020-11-29 21:06:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:06:55,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:55,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:55,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:06:55,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:55,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:55,146 INFO L82 PathProgramCache]: Analyzing trace with hash -344952779, now seen corresponding path program 1 times [2020-11-29 21:06:55,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:55,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294333057] [2020-11-29 21:06:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:06:55,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294333057] [2020-11-29 21:06:55,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:55,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:06:55,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853316543] [2020-11-29 21:06:55,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:06:55,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:06:55,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:06:55,340 INFO L87 Difference]: Start difference. First operand 179 states and 227 transitions. Second operand 3 states. [2020-11-29 21:06:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:55,469 INFO L93 Difference]: Finished difference Result 489 states and 632 transitions. [2020-11-29 21:06:55,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:06:55,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-29 21:06:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:55,475 INFO L225 Difference]: With dead ends: 489 [2020-11-29 21:06:55,475 INFO L226 Difference]: Without dead ends: 317 [2020-11-29 21:06:55,479 INFO L677 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 [2020-11-29 21:06:55,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-11-29 21:06:55,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-11-29 21:06:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-11-29 21:06:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 409 transitions. [2020-11-29 21:06:55,527 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 409 transitions. Word has length 19 [2020-11-29 21:06:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:55,529 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 409 transitions. [2020-11-29 21:06:55,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:06:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 409 transitions. [2020-11-29 21:06:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 21:06:55,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:55,532 INFO L422 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] [2020-11-29 21:06:55,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:06:55,533 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1825287386, now seen corresponding path program 1 times [2020-11-29 21:06:55,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:55,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064506023] [2020-11-29 21:06:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:06:55,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064506023] [2020-11-29 21:06:55,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:55,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:06:55,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123326630] [2020-11-29 21:06:55,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:06:55,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:06:55,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:06:55,676 INFO L87 Difference]: Start difference. First operand 317 states and 409 transitions. Second operand 3 states. [2020-11-29 21:06:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:55,732 INFO L93 Difference]: Finished difference Result 918 states and 1196 transitions. [2020-11-29 21:06:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:06:55,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-29 21:06:55,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:55,736 INFO L225 Difference]: With dead ends: 918 [2020-11-29 21:06:55,736 INFO L226 Difference]: Without dead ends: 608 [2020-11-29 21:06:55,738 INFO L677 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 [2020-11-29 21:06:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-11-29 21:06:55,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2020-11-29 21:06:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-11-29 21:06:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 789 transitions. [2020-11-29 21:06:55,766 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 789 transitions. Word has length 31 [2020-11-29 21:06:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:55,766 INFO L481 AbstractCegarLoop]: Abstraction has 608 states and 789 transitions. [2020-11-29 21:06:55,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:06:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 789 transitions. [2020-11-29 21:06:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 21:06:55,768 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:55,768 INFO L422 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] [2020-11-29 21:06:55,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:06:55,769 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash -736868892, now seen corresponding path program 1 times [2020-11-29 21:06:55,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:55,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828150293] [2020-11-29 21:06:55,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:06:55,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828150293] [2020-11-29 21:06:55,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:55,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:06:55,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647768601] [2020-11-29 21:06:55,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:06:55,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:55,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:06:55,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:06:55,886 INFO L87 Difference]: Start difference. First operand 608 states and 789 transitions. Second operand 3 states. [2020-11-29 21:06:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:55,936 INFO L93 Difference]: Finished difference Result 608 states and 789 transitions. [2020-11-29 21:06:55,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:06:55,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-29 21:06:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:55,941 INFO L225 Difference]: With dead ends: 608 [2020-11-29 21:06:55,941 INFO L226 Difference]: Without dead ends: 604 [2020-11-29 21:06:55,941 INFO L677 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 [2020-11-29 21:06:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-11-29 21:06:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2020-11-29 21:06:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-11-29 21:06:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 785 transitions. [2020-11-29 21:06:55,971 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 785 transitions. Word has length 32 [2020-11-29 21:06:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:55,971 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 785 transitions. [2020-11-29 21:06:55,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:06:55,972 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 785 transitions. [2020-11-29 21:06:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 21:06:55,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:55,978 INFO L422 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] [2020-11-29 21:06:55,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:06:55,978 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1355633929, now seen corresponding path program 1 times [2020-11-29 21:06:55,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:55,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252270248] [2020-11-29 21:06:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:06:56,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252270248] [2020-11-29 21:06:56,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:56,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:06:56,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495791645] [2020-11-29 21:06:56,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:06:56,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:56,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:06:56,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:06:56,090 INFO L87 Difference]: Start difference. First operand 604 states and 785 transitions. Second operand 3 states. [2020-11-29 21:06:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:56,113 INFO L93 Difference]: Finished difference Result 604 states and 785 transitions. [2020-11-29 21:06:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:06:56,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-29 21:06:56,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:56,118 INFO L225 Difference]: With dead ends: 604 [2020-11-29 21:06:56,118 INFO L226 Difference]: Without dead ends: 600 [2020-11-29 21:06:56,120 INFO L677 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 [2020-11-29 21:06:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-11-29 21:06:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2020-11-29 21:06:56,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-11-29 21:06:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 781 transitions. [2020-11-29 21:06:56,146 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 781 transitions. Word has length 33 [2020-11-29 21:06:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:56,146 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 781 transitions. [2020-11-29 21:06:56,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:06:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 781 transitions. [2020-11-29 21:06:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 21:06:56,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:56,150 INFO L422 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] [2020-11-29 21:06:56,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:06:56,150 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 937486421, now seen corresponding path program 1 times [2020-11-29 21:06:56,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:56,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639109006] [2020-11-29 21:06:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:06:56,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639109006] [2020-11-29 21:06:56,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:56,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:06:56,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173977382] [2020-11-29 21:06:56,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:06:56,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:56,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:06:56,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:06:56,244 INFO L87 Difference]: Start difference. First operand 600 states and 781 transitions. Second operand 3 states. [2020-11-29 21:06:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:56,271 INFO L93 Difference]: Finished difference Result 600 states and 781 transitions. [2020-11-29 21:06:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:06:56,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-11-29 21:06:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:56,277 INFO L225 Difference]: With dead ends: 600 [2020-11-29 21:06:56,277 INFO L226 Difference]: Without dead ends: 590 [2020-11-29 21:06:56,278 INFO L677 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 [2020-11-29 21:06:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-11-29 21:06:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-11-29 21:06:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-11-29 21:06:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 768 transitions. [2020-11-29 21:06:56,308 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 768 transitions. Word has length 34 [2020-11-29 21:06:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:56,310 INFO L481 AbstractCegarLoop]: Abstraction has 590 states and 768 transitions. [2020-11-29 21:06:56,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:06:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 768 transitions. [2020-11-29 21:06:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 21:06:56,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:56,313 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:56,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:06:56,319 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:56,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2000658803, now seen corresponding path program 1 times [2020-11-29 21:06:56,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:56,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385959966] [2020-11-29 21:06:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:06:56,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385959966] [2020-11-29 21:06:56,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:56,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:06:56,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190541775] [2020-11-29 21:06:56,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:06:56,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:06:56,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:06:56,454 INFO L87 Difference]: Start difference. First operand 590 states and 768 transitions. Second operand 3 states. [2020-11-29 21:06:56,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:56,517 INFO L93 Difference]: Finished difference Result 1233 states and 1613 transitions. [2020-11-29 21:06:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:06:56,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-29 21:06:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:56,522 INFO L225 Difference]: With dead ends: 1233 [2020-11-29 21:06:56,522 INFO L226 Difference]: Without dead ends: 650 [2020-11-29 21:06:56,524 INFO L677 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 [2020-11-29 21:06:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-11-29 21:06:56,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 640. [2020-11-29 21:06:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-11-29 21:06:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 839 transitions. [2020-11-29 21:06:56,553 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 839 transitions. Word has length 86 [2020-11-29 21:06:56,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:56,553 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 839 transitions. [2020-11-29 21:06:56,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:06:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 839 transitions. [2020-11-29 21:06:56,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-29 21:06:56,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:56,556 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:56,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:06:56,556 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:56,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1281355014, now seen corresponding path program 1 times [2020-11-29 21:06:56,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:56,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133454851] [2020-11-29 21:06:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:06:56,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133454851] [2020-11-29 21:06:56,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:56,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:06:56,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533690039] [2020-11-29 21:06:56,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:06:56,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:56,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:06:56,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:06:56,694 INFO L87 Difference]: Start difference. First operand 640 states and 839 transitions. Second operand 5 states. [2020-11-29 21:06:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:56,823 INFO L93 Difference]: Finished difference Result 1948 states and 2593 transitions. [2020-11-29 21:06:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:06:56,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-11-29 21:06:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:56,832 INFO L225 Difference]: With dead ends: 1948 [2020-11-29 21:06:56,832 INFO L226 Difference]: Without dead ends: 1315 [2020-11-29 21:06:56,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:06:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-11-29 21:06:56,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 652. [2020-11-29 21:06:56,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-11-29 21:06:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 851 transitions. [2020-11-29 21:06:56,894 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 851 transitions. Word has length 94 [2020-11-29 21:06:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:56,896 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 851 transitions. [2020-11-29 21:06:56,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:06:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 851 transitions. [2020-11-29 21:06:56,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 21:06:56,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:56,899 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:56,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:06:56,900 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:56,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1523530399, now seen corresponding path program 1 times [2020-11-29 21:06:56,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:56,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779889935] [2020-11-29 21:06:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:06:57,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779889935] [2020-11-29 21:06:57,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98300418] [2020-11-29 21:06:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:06:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:57,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:06:57,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:06:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:06:57,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:06:57,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2020-11-29 21:06:57,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543120717] [2020-11-29 21:06:57,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:06:57,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:57,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:06:57,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:06:57,711 INFO L87 Difference]: Start difference. First operand 652 states and 851 transitions. Second operand 5 states. [2020-11-29 21:06:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:57,940 INFO L93 Difference]: Finished difference Result 2203 states and 2877 transitions. [2020-11-29 21:06:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:06:57,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-11-29 21:06:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:57,952 INFO L225 Difference]: With dead ends: 2203 [2020-11-29 21:06:57,952 INFO L226 Difference]: Without dead ends: 1558 [2020-11-29 21:06:57,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:06:57,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2020-11-29 21:06:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 680. [2020-11-29 21:06:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-11-29 21:06:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 879 transitions. [2020-11-29 21:06:58,020 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 879 transitions. Word has length 96 [2020-11-29 21:06:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:58,025 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 879 transitions. [2020-11-29 21:06:58,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:06:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 879 transitions. [2020-11-29 21:06:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 21:06:58,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:58,032 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:58,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 21:06:58,252 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:58,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2110336413, now seen corresponding path program 1 times [2020-11-29 21:06:58,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:58,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821716702] [2020-11-29 21:06:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:06:58,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821716702] [2020-11-29 21:06:58,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:58,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:06:58,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844573529] [2020-11-29 21:06:58,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:06:58,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:06:58,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:06:58,442 INFO L87 Difference]: Start difference. First operand 680 states and 879 transitions. Second operand 4 states. [2020-11-29 21:06:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:58,623 INFO L93 Difference]: Finished difference Result 1878 states and 2423 transitions. [2020-11-29 21:06:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:06:58,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-11-29 21:06:58,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:58,630 INFO L225 Difference]: With dead ends: 1878 [2020-11-29 21:06:58,631 INFO L226 Difference]: Without dead ends: 1205 [2020-11-29 21:06:58,632 INFO L677 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 [2020-11-29 21:06:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2020-11-29 21:06:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 688. [2020-11-29 21:06:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-11-29 21:06:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 887 transitions. [2020-11-29 21:06:58,691 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 887 transitions. Word has length 96 [2020-11-29 21:06:58,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:58,691 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 887 transitions. [2020-11-29 21:06:58,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:06:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 887 transitions. [2020-11-29 21:06:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 21:06:58,693 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:58,694 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:58,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 21:06:58,694 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1046351687, now seen corresponding path program 1 times [2020-11-29 21:06:58,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:58,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92678343] [2020-11-29 21:06:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:06:58,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92678343] [2020-11-29 21:06:58,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:58,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:06:58,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829604879] [2020-11-29 21:06:58,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:06:58,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:58,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:06:58,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:06:58,920 INFO L87 Difference]: Start difference. First operand 688 states and 887 transitions. Second operand 7 states. [2020-11-29 21:06:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:06:59,609 INFO L93 Difference]: Finished difference Result 3434 states and 4451 transitions. [2020-11-29 21:06:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:06:59,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-11-29 21:06:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:06:59,624 INFO L225 Difference]: With dead ends: 3434 [2020-11-29 21:06:59,624 INFO L226 Difference]: Without dead ends: 2753 [2020-11-29 21:06:59,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-11-29 21:06:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2020-11-29 21:06:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 740. [2020-11-29 21:06:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-11-29 21:06:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 943 transitions. [2020-11-29 21:06:59,740 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 943 transitions. Word has length 98 [2020-11-29 21:06:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:06:59,740 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 943 transitions. [2020-11-29 21:06:59,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:06:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 943 transitions. [2020-11-29 21:06:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 21:06:59,743 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:06:59,743 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:06:59,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 21:06:59,743 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:06:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:06:59,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2011159293, now seen corresponding path program 1 times [2020-11-29 21:06:59,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:06:59,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472226179] [2020-11-29 21:06:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:06:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:06:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:06:59,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472226179] [2020-11-29 21:06:59,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:06:59,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 21:06:59,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673956869] [2020-11-29 21:06:59,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:06:59,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:06:59,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:06:59,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:06:59,966 INFO L87 Difference]: Start difference. First operand 740 states and 943 transitions. Second operand 8 states. [2020-11-29 21:07:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:00,681 INFO L93 Difference]: Finished difference Result 2584 states and 3319 transitions. [2020-11-29 21:07:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 21:07:00,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-11-29 21:07:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:00,692 INFO L225 Difference]: With dead ends: 2584 [2020-11-29 21:07:00,692 INFO L226 Difference]: Without dead ends: 1851 [2020-11-29 21:07:00,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-11-29 21:07:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-11-29 21:07:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 740. [2020-11-29 21:07:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-11-29 21:07:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 943 transitions. [2020-11-29 21:07:00,811 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 943 transitions. Word has length 100 [2020-11-29 21:07:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:00,812 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 943 transitions. [2020-11-29 21:07:00,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:07:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 943 transitions. [2020-11-29 21:07:00,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 21:07:00,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:00,814 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:00,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 21:07:00,815 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:00,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:00,815 INFO L82 PathProgramCache]: Analyzing trace with hash 580204679, now seen corresponding path program 1 times [2020-11-29 21:07:00,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:07:00,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241572237] [2020-11-29 21:07:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:07:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:00,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241572237] [2020-11-29 21:07:00,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:00,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:07:00,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350603273] [2020-11-29 21:07:00,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:07:00,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:07:00,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:07:00,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:00,990 INFO L87 Difference]: Start difference. First operand 740 states and 943 transitions. Second operand 5 states. [2020-11-29 21:07:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:01,474 INFO L93 Difference]: Finished difference Result 2517 states and 3210 transitions. [2020-11-29 21:07:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:07:01,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-11-29 21:07:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:01,486 INFO L225 Difference]: With dead ends: 2517 [2020-11-29 21:07:01,486 INFO L226 Difference]: Without dead ends: 2147 [2020-11-29 21:07:01,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:07:01,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2020-11-29 21:07:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 752. [2020-11-29 21:07:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2020-11-29 21:07:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 955 transitions. [2020-11-29 21:07:01,610 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 955 transitions. Word has length 102 [2020-11-29 21:07:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:01,610 INFO L481 AbstractCegarLoop]: Abstraction has 752 states and 955 transitions. [2020-11-29 21:07:01,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:07:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 955 transitions. [2020-11-29 21:07:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-29 21:07:01,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:01,612 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:01,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 21:07:01,613 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:01,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1307191427, now seen corresponding path program 1 times [2020-11-29 21:07:01,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:07:01,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948796081] [2020-11-29 21:07:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:07:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:01,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948796081] [2020-11-29 21:07:01,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:01,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:07:01,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162343886] [2020-11-29 21:07:01,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:07:01,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:07:01,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:07:01,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:01,805 INFO L87 Difference]: Start difference. First operand 752 states and 955 transitions. Second operand 5 states. [2020-11-29 21:07:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:02,214 INFO L93 Difference]: Finished difference Result 2680 states and 3419 transitions. [2020-11-29 21:07:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:07:02,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-11-29 21:07:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:02,225 INFO L225 Difference]: With dead ends: 2680 [2020-11-29 21:07:02,225 INFO L226 Difference]: Without dead ends: 1935 [2020-11-29 21:07:02,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:07:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-11-29 21:07:02,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 764. [2020-11-29 21:07:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2020-11-29 21:07:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 967 transitions. [2020-11-29 21:07:02,387 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 967 transitions. Word has length 104 [2020-11-29 21:07:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:02,387 INFO L481 AbstractCegarLoop]: Abstraction has 764 states and 967 transitions. [2020-11-29 21:07:02,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:07:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 967 transitions. [2020-11-29 21:07:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 21:07:02,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:02,390 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:02,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 21:07:02,391 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1404156705, now seen corresponding path program 1 times [2020-11-29 21:07:02,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:07:02,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705031118] [2020-11-29 21:07:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:07:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:02,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705031118] [2020-11-29 21:07:02,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:02,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 21:07:02,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751741440] [2020-11-29 21:07:02,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:07:02,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:07:02,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:07:02,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:07:02,895 INFO L87 Difference]: Start difference. First operand 764 states and 967 transitions. Second operand 9 states. [2020-11-29 21:07:04,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:04,328 INFO L93 Difference]: Finished difference Result 2590 states and 3307 transitions. [2020-11-29 21:07:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 21:07:04,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-11-29 21:07:04,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:04,340 INFO L225 Difference]: With dead ends: 2590 [2020-11-29 21:07:04,341 INFO L226 Difference]: Without dead ends: 2208 [2020-11-29 21:07:04,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-11-29 21:07:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2020-11-29 21:07:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 770. [2020-11-29 21:07:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-11-29 21:07:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 973 transitions. [2020-11-29 21:07:04,528 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 973 transitions. Word has length 106 [2020-11-29 21:07:04,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:04,529 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 973 transitions. [2020-11-29 21:07:04,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:07:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 973 transitions. [2020-11-29 21:07:04,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 21:07:04,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:04,531 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:04,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 21:07:04,532 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:04,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1293017080, now seen corresponding path program 1 times [2020-11-29 21:07:04,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:07:04,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657664017] [2020-11-29 21:07:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:07:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:04,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657664017] [2020-11-29 21:07:04,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069869485] [2020-11-29 21:07:04,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:07:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:05,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1534 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 21:07:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:05,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:07:05,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-11-29 21:07:05,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543765035] [2020-11-29 21:07:05,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:07:05,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:07:05,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:07:05,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:05,360 INFO L87 Difference]: Start difference. First operand 770 states and 973 transitions. Second operand 4 states. [2020-11-29 21:07:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:05,879 INFO L93 Difference]: Finished difference Result 2299 states and 2907 transitions. [2020-11-29 21:07:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:07:05,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-11-29 21:07:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:05,892 INFO L225 Difference]: With dead ends: 2299 [2020-11-29 21:07:05,892 INFO L226 Difference]: Without dead ends: 2292 [2020-11-29 21:07:05,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2020-11-29 21:07:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2242. [2020-11-29 21:07:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2242 states. [2020-11-29 21:07:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2845 transitions. [2020-11-29 21:07:06,344 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2845 transitions. Word has length 127 [2020-11-29 21:07:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:06,344 INFO L481 AbstractCegarLoop]: Abstraction has 2242 states and 2845 transitions. [2020-11-29 21:07:06,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:07:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2845 transitions. [2020-11-29 21:07:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 21:07:06,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:06,348 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:06,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 21:07:06,576 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:06,577 INFO L82 PathProgramCache]: Analyzing trace with hash 706211066, now seen corresponding path program 1 times [2020-11-29 21:07:06,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:07:06,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253742366] [2020-11-29 21:07:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:07:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:06,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253742366] [2020-11-29 21:07:06,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:06,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:07:06,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568629316] [2020-11-29 21:07:06,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:07:06,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:07:06,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:07:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:07:06,713 INFO L87 Difference]: Start difference. First operand 2242 states and 2845 transitions. Second operand 4 states. [2020-11-29 21:07:07,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:07,629 INFO L93 Difference]: Finished difference Result 7273 states and 9295 transitions. [2020-11-29 21:07:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:07:07,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-11-29 21:07:07,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:07,655 INFO L225 Difference]: With dead ends: 7273 [2020-11-29 21:07:07,655 INFO L226 Difference]: Without dead ends: 5038 [2020-11-29 21:07:07,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2020-11-29 21:07:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 2254. [2020-11-29 21:07:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-11-29 21:07:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2857 transitions. [2020-11-29 21:07:08,121 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2857 transitions. Word has length 127 [2020-11-29 21:07:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:08,121 INFO L481 AbstractCegarLoop]: Abstraction has 2254 states and 2857 transitions. [2020-11-29 21:07:08,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:07:08,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2857 transitions. [2020-11-29 21:07:08,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-29 21:07:08,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:08,125 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:08,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 21:07:08,126 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:08,127 INFO L82 PathProgramCache]: Analyzing trace with hash 123430082, now seen corresponding path program 1 times [2020-11-29 21:07:08,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:07:08,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677534514] [2020-11-29 21:07:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:07:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:08,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677534514] [2020-11-29 21:07:08,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:08,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:07:08,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137253336] [2020-11-29 21:07:08,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:07:08,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:07:08,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:07:08,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:07:08,270 INFO L87 Difference]: Start difference. First operand 2254 states and 2857 transitions. Second operand 4 states. [2020-11-29 21:07:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:08,998 INFO L93 Difference]: Finished difference Result 5626 states and 7165 transitions. [2020-11-29 21:07:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:07:08,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-11-29 21:07:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:09,025 INFO L225 Difference]: With dead ends: 5626 [2020-11-29 21:07:09,026 INFO L226 Difference]: Without dead ends: 3355 [2020-11-29 21:07:09,030 INFO L677 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 [2020-11-29 21:07:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2020-11-29 21:07:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 2254. [2020-11-29 21:07:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-11-29 21:07:09,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2845 transitions. [2020-11-29 21:07:09,456 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2845 transitions. Word has length 131 [2020-11-29 21:07:09,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:09,456 INFO L481 AbstractCegarLoop]: Abstraction has 2254 states and 2845 transitions. [2020-11-29 21:07:09,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:07:09,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2845 transitions. [2020-11-29 21:07:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-29 21:07:09,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:09,461 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:09,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 21:07:09,461 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:09,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1139567326, now seen corresponding path program 1 times [2020-11-29 21:07:09,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:07:09,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304720280] [2020-11-29 21:07:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:07:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:09,949 ERROR L253 erpolLogProxyWrapper]: Interpolant 96 not inductive [2020-11-29 21:07:09,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 21:07:09,960 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-29 21:07:09,970 INFO L168 Benchmark]: Toolchain (without parser) took 18661.29 ms. Allocated memory was 90.2 MB in the beginning and 539.0 MB in the end (delta: 448.8 MB). Free memory was 54.4 MB in the beginning and 303.1 MB in the end (delta: -248.7 MB). Peak memory consumption was 198.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:07:09,971 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 90.2 MB. Free memory was 47.5 MB in the beginning and 47.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:07:09,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1312.66 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 54.2 MB in the beginning and 75.9 MB in the end (delta: -21.6 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:07:09,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.16 ms. Allocated memory is still 127.9 MB. Free memory was 75.9 MB in the beginning and 68.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:07:09,972 INFO L168 Benchmark]: Boogie Preprocessor took 102.76 ms. Allocated memory is still 127.9 MB. Free memory was 68.5 MB in the beginning and 62.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:07:09,972 INFO L168 Benchmark]: RCFGBuilder took 1612.25 ms. Allocated memory was 127.9 MB in the beginning and 184.5 MB in the end (delta: 56.6 MB). Free memory was 62.2 MB in the beginning and 104.0 MB in the end (delta: -41.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:07:09,973 INFO L168 Benchmark]: TraceAbstraction took 15507.30 ms. Allocated memory was 184.5 MB in the beginning and 539.0 MB in the end (delta: 354.4 MB). Free memory was 103.0 MB in the beginning and 303.1 MB in the end (delta: -200.1 MB). Peak memory consumption was 154.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:07:09,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 90.2 MB. Free memory was 47.5 MB in the beginning and 47.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1312.66 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 54.2 MB in the beginning and 75.9 MB in the end (delta: -21.6 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.16 ms. Allocated memory is still 127.9 MB. Free memory was 75.9 MB in the beginning and 68.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.76 ms. Allocated memory is still 127.9 MB. Free memory was 68.5 MB in the beginning and 62.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1612.25 ms. Allocated memory was 127.9 MB in the beginning and 184.5 MB in the end (delta: 56.6 MB). Free memory was 62.2 MB in the beginning and 104.0 MB in the end (delta: -41.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15507.30 ms. Allocated memory was 184.5 MB in the beginning and 539.0 MB in the end (delta: 354.4 MB). Free memory was 103.0 MB in the beginning and 303.1 MB in the end (delta: -200.1 MB). Peak memory consumption was 154.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:07:12,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:07:12,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:07:12,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:07:12,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:07:12,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:07:12,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:07:12,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:07:12,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:07:12,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:07:12,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:07:12,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:07:12,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:07:12,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:07:12,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:07:12,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:07:12,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:07:12,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:07:12,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:07:12,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:07:12,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:07:12,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:07:12,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:07:12,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:07:12,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:07:12,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:07:12,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:07:12,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:07:12,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:07:12,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:07:12,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:07:12,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:07:12,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:07:12,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:07:12,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:07:12,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:07:12,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:07:12,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:07:12,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:07:12,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:07:12,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:07:12,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2020-11-29 21:07:12,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:07:12,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:07:12,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:07:12,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:07:12,608 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:07:12,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:07:12,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:07:12,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:07:12,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:07:12,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:07:12,610 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 21:07:12,611 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 21:07:12,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:07:12,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:07:12,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:07:12,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:07:12,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:07:12,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:07:12,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:07:12,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:07:12,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:07:12,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:07:12,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:07:12,613 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 21:07:12,613 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 21:07:12,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:07:12,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:07:12,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 21:07:12,614 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2020-11-29 21:07:12,615 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9cd9997765503e815fc0399655b9b9a72bc46 [2020-11-29 21:07:12,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:07:13,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:07:13,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:07:13,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:07:13,029 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:07:13,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-11-29 21:07:13,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/12ff4e601/4a182cf920124c82aaa26b8f71f76173/FLAG49e37d317 [2020-11-29 21:07:13,928 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:07:13,929 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-11-29 21:07:13,968 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/12ff4e601/4a182cf920124c82aaa26b8f71f76173/FLAG49e37d317 [2020-11-29 21:07:14,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/data/12ff4e601/4a182cf920124c82aaa26b8f71f76173 [2020-11-29 21:07:14,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:07:14,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:07:14,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:07:14,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:07:14,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:07:14,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:07:14" (1/1) ... [2020-11-29 21:07:14,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7b9a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:14, skipping insertion in model container [2020-11-29 21:07:14,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:07:14" (1/1) ... [2020-11-29 21:07:14,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:07:14,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:07:14,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:07:15,007 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:07:15,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:07:15,320 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:07:15,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15 WrapperNode [2020-11-29 21:07:15,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:07:15,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:07:15,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:07:15,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:07:15,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:07:15,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:07:15,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:07:15,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:07:15,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... [2020-11-29 21:07:15,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:07:15,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:07:15,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:07:15,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:07:15,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:07:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-29 21:07:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2020-11-29 21:07:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 21:07:15,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2020-11-29 21:07:15,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 21:07:15,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 21:07:15,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:07:15,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 21:07:15,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2020-11-29 21:07:15,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2020-11-29 21:07:15,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:07:15,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 21:07:15,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-29 21:07:15,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2020-11-29 21:07:15,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 21:07:15,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2020-11-29 21:07:15,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2020-11-29 21:07:15,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:07:15,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:07:20,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:07:20,651 INFO L298 CfgBuilder]: Removed 202 assume(true) statements. [2020-11-29 21:07:20,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:07:20 BoogieIcfgContainer [2020-11-29 21:07:20,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:07:20,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:07:20,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:07:20,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:07:20,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:07:14" (1/3) ... [2020-11-29 21:07:20,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4955ae0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:07:20, skipping insertion in model container [2020-11-29 21:07:20,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:07:15" (2/3) ... [2020-11-29 21:07:20,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4955ae0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:07:20, skipping insertion in model container [2020-11-29 21:07:20,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:07:20" (3/3) ... [2020-11-29 21:07:20,662 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-11-29 21:07:20,672 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:07:20,676 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 21:07:20,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 21:07:20,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:07:20,728 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:07:20,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:07:20,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:07:20,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:07:20,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:07:20,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:07:20,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:07:20,748 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-11-29 21:07:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:07:20,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:20,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:20,757 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:20,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:20,763 INFO L82 PathProgramCache]: Analyzing trace with hash 676115575, now seen corresponding path program 1 times [2020-11-29 21:07:20,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:20,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286708193] [2020-11-29 21:07:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:21,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 21:07:21,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:21,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:21,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286708193] [2020-11-29 21:07:21,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:21,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 21:07:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466556763] [2020-11-29 21:07:21,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:07:21,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:21,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:07:21,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:07:21,223 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 2 states. [2020-11-29 21:07:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:21,269 INFO L93 Difference]: Finished difference Result 370 states and 505 transitions. [2020-11-29 21:07:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:07:21,271 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-11-29 21:07:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:21,282 INFO L225 Difference]: With dead ends: 370 [2020-11-29 21:07:21,282 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 21:07:21,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:07:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 21:07:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-11-29 21:07:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-29 21:07:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 227 transitions. [2020-11-29 21:07:21,332 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 227 transitions. Word has length 19 [2020-11-29 21:07:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:21,333 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 227 transitions. [2020-11-29 21:07:21,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:07:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 227 transitions. [2020-11-29 21:07:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 21:07:21,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:21,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:21,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 21:07:21,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:21,542 INFO L82 PathProgramCache]: Analyzing trace with hash -344952779, now seen corresponding path program 1 times [2020-11-29 21:07:21,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:21,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596215089] [2020-11-29 21:07:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:21,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:07:21,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:21,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:22,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596215089] [2020-11-29 21:07:22,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:22,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 21:07:22,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337426582] [2020-11-29 21:07:22,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:07:22,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:22,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:07:22,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:07:22,069 INFO L87 Difference]: Start difference. First operand 179 states and 227 transitions. Second operand 4 states. [2020-11-29 21:07:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:22,525 INFO L93 Difference]: Finished difference Result 626 states and 815 transitions. [2020-11-29 21:07:22,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:07:22,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 21:07:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:22,534 INFO L225 Difference]: With dead ends: 626 [2020-11-29 21:07:22,534 INFO L226 Difference]: Without dead ends: 454 [2020-11-29 21:07:22,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:07:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-11-29 21:07:22,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2020-11-29 21:07:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-11-29 21:07:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 591 transitions. [2020-11-29 21:07:22,612 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 591 transitions. Word has length 19 [2020-11-29 21:07:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:22,613 INFO L481 AbstractCegarLoop]: Abstraction has 454 states and 591 transitions. [2020-11-29 21:07:22,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:07:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 591 transitions. [2020-11-29 21:07:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 21:07:22,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:22,618 INFO L422 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] [2020-11-29 21:07:22,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 21:07:22,829 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:22,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1825287386, now seen corresponding path program 1 times [2020-11-29 21:07:22,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:22,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880745234] [2020-11-29 21:07:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:23,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:07:23,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:23,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:23,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880745234] [2020-11-29 21:07:23,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:23,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 21:07:23,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027488772] [2020-11-29 21:07:23,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:07:23,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:07:23,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:23,270 INFO L87 Difference]: Start difference. First operand 454 states and 591 transitions. Second operand 5 states. [2020-11-29 21:07:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:23,451 INFO L93 Difference]: Finished difference Result 1221 states and 1586 transitions. [2020-11-29 21:07:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:07:23,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 21:07:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:23,457 INFO L225 Difference]: With dead ends: 1221 [2020-11-29 21:07:23,457 INFO L226 Difference]: Without dead ends: 774 [2020-11-29 21:07:23,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:07:23,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-11-29 21:07:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 457. [2020-11-29 21:07:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-11-29 21:07:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 593 transitions. [2020-11-29 21:07:23,518 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 593 transitions. Word has length 31 [2020-11-29 21:07:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:23,518 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 593 transitions. [2020-11-29 21:07:23,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:07:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 593 transitions. [2020-11-29 21:07:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 21:07:23,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:23,524 INFO L422 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] [2020-11-29 21:07:23,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 21:07:23,742 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:23,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:23,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1145229016, now seen corresponding path program 1 times [2020-11-29 21:07:23,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:23,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884490026] [2020-11-29 21:07:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:24,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:07:24,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:24,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:24,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884490026] [2020-11-29 21:07:24,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:24,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 21:07:24,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856592295] [2020-11-29 21:07:24,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:07:24,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:24,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:07:24,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:24,130 INFO L87 Difference]: Start difference. First operand 457 states and 593 transitions. Second operand 3 states. [2020-11-29 21:07:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:24,207 INFO L93 Difference]: Finished difference Result 1338 states and 1748 transitions. [2020-11-29 21:07:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:07:24,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-29 21:07:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:24,212 INFO L225 Difference]: With dead ends: 1338 [2020-11-29 21:07:24,213 INFO L226 Difference]: Without dead ends: 888 [2020-11-29 21:07:24,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:24,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-11-29 21:07:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 888. [2020-11-29 21:07:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-11-29 21:07:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1155 transitions. [2020-11-29 21:07:24,271 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1155 transitions. Word has length 31 [2020-11-29 21:07:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:24,272 INFO L481 AbstractCegarLoop]: Abstraction has 888 states and 1155 transitions. [2020-11-29 21:07:24,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:07:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1155 transitions. [2020-11-29 21:07:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 21:07:24,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:24,275 INFO L422 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] [2020-11-29 21:07:24,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 21:07:24,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:24,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1129895902, now seen corresponding path program 1 times [2020-11-29 21:07:24,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:24,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968795345] [2020-11-29 21:07:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:24,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:07:24,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:24,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:24,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968795345] [2020-11-29 21:07:24,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:24,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 21:07:24,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875963891] [2020-11-29 21:07:24,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:07:24,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:24,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:07:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:24,838 INFO L87 Difference]: Start difference. First operand 888 states and 1155 transitions. Second operand 3 states. [2020-11-29 21:07:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:24,901 INFO L93 Difference]: Finished difference Result 888 states and 1155 transitions. [2020-11-29 21:07:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:07:24,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-29 21:07:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:24,907 INFO L225 Difference]: With dead ends: 888 [2020-11-29 21:07:24,907 INFO L226 Difference]: Without dead ends: 884 [2020-11-29 21:07:24,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-11-29 21:07:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 884. [2020-11-29 21:07:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-11-29 21:07:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1151 transitions. [2020-11-29 21:07:24,976 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1151 transitions. Word has length 32 [2020-11-29 21:07:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:24,976 INFO L481 AbstractCegarLoop]: Abstraction has 884 states and 1151 transitions. [2020-11-29 21:07:24,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:07:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1151 transitions. [2020-11-29 21:07:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 21:07:24,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:24,980 INFO L422 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] [2020-11-29 21:07:25,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 21:07:25,198 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:25,198 INFO L82 PathProgramCache]: Analyzing trace with hash -654569351, now seen corresponding path program 1 times [2020-11-29 21:07:25,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:25,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513085222] [2020-11-29 21:07:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:25,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:07:25,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:25,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:25,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513085222] [2020-11-29 21:07:25,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:25,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 21:07:25,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659261808] [2020-11-29 21:07:25,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:07:25,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:07:25,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:25,522 INFO L87 Difference]: Start difference. First operand 884 states and 1151 transitions. Second operand 3 states. [2020-11-29 21:07:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:25,578 INFO L93 Difference]: Finished difference Result 884 states and 1151 transitions. [2020-11-29 21:07:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:07:25,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-29 21:07:25,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:25,585 INFO L225 Difference]: With dead ends: 884 [2020-11-29 21:07:25,585 INFO L226 Difference]: Without dead ends: 880 [2020-11-29 21:07:25,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-11-29 21:07:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2020-11-29 21:07:25,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-11-29 21:07:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1147 transitions. [2020-11-29 21:07:25,655 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1147 transitions. Word has length 33 [2020-11-29 21:07:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:25,656 INFO L481 AbstractCegarLoop]: Abstraction has 880 states and 1147 transitions. [2020-11-29 21:07:25,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:07:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1147 transitions. [2020-11-29 21:07:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 21:07:25,657 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:25,657 INFO L422 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] [2020-11-29 21:07:25,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 21:07:25,878 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:25,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1195651859, now seen corresponding path program 1 times [2020-11-29 21:07:25,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:25,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581953646] [2020-11-29 21:07:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:26,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:07:26,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:26,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:26,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581953646] [2020-11-29 21:07:26,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:26,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 21:07:26,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225353246] [2020-11-29 21:07:26,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:07:26,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:26,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:07:26,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:26,273 INFO L87 Difference]: Start difference. First operand 880 states and 1147 transitions. Second operand 3 states. [2020-11-29 21:07:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:26,337 INFO L93 Difference]: Finished difference Result 880 states and 1147 transitions. [2020-11-29 21:07:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:07:26,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-11-29 21:07:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:26,343 INFO L225 Difference]: With dead ends: 880 [2020-11-29 21:07:26,343 INFO L226 Difference]: Without dead ends: 870 [2020-11-29 21:07:26,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-11-29 21:07:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2020-11-29 21:07:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-11-29 21:07:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1135 transitions. [2020-11-29 21:07:26,409 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1135 transitions. Word has length 34 [2020-11-29 21:07:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:26,410 INFO L481 AbstractCegarLoop]: Abstraction has 870 states and 1135 transitions. [2020-11-29 21:07:26,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:07:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1135 transitions. [2020-11-29 21:07:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 21:07:26,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:26,412 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:26,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 21:07:26,627 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1320600433, now seen corresponding path program 1 times [2020-11-29 21:07:26,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:26,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237526697] [2020-11-29 21:07:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:27,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:07:27,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:27,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:07:27,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237526697] [2020-11-29 21:07:27,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:27,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 21:07:27,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524753440] [2020-11-29 21:07:27,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:07:27,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:27,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:07:27,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:27,195 INFO L87 Difference]: Start difference. First operand 870 states and 1135 transitions. Second operand 3 states. [2020-11-29 21:07:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:27,329 INFO L93 Difference]: Finished difference Result 1819 states and 2387 transitions. [2020-11-29 21:07:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:07:27,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-29 21:07:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:27,338 INFO L225 Difference]: With dead ends: 1819 [2020-11-29 21:07:27,339 INFO L226 Difference]: Without dead ends: 956 [2020-11-29 21:07:27,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:07:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-11-29 21:07:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 933. [2020-11-29 21:07:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-11-29 21:07:27,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1225 transitions. [2020-11-29 21:07:27,432 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1225 transitions. Word has length 86 [2020-11-29 21:07:27,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:27,432 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1225 transitions. [2020-11-29 21:07:27,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:07:27,433 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1225 transitions. [2020-11-29 21:07:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-29 21:07:27,435 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:27,435 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:27,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 21:07:27,652 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:27,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:27,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1281355014, now seen corresponding path program 1 times [2020-11-29 21:07:27,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:27,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883354959] [2020-11-29 21:07:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:28,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:07:28,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:28,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883354959] [2020-11-29 21:07:28,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:28,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 21:07:28,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632847923] [2020-11-29 21:07:28,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:07:28,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:28,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:07:28,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:07:28,273 INFO L87 Difference]: Start difference. First operand 933 states and 1225 transitions. Second operand 6 states. [2020-11-29 21:07:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:28,575 INFO L93 Difference]: Finished difference Result 2617 states and 3421 transitions. [2020-11-29 21:07:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:07:28,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-11-29 21:07:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:28,587 INFO L225 Difference]: With dead ends: 2617 [2020-11-29 21:07:28,587 INFO L226 Difference]: Without dead ends: 1691 [2020-11-29 21:07:28,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:07:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-11-29 21:07:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 945. [2020-11-29 21:07:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2020-11-29 21:07:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1237 transitions. [2020-11-29 21:07:28,669 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1237 transitions. Word has length 94 [2020-11-29 21:07:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:28,669 INFO L481 AbstractCegarLoop]: Abstraction has 945 states and 1237 transitions. [2020-11-29 21:07:28,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:07:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1237 transitions. [2020-11-29 21:07:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-11-29 21:07:28,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:28,672 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:28,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-29 21:07:28,891 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:28,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2122762018, now seen corresponding path program 1 times [2020-11-29 21:07:28,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:28,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408969524] [2020-11-29 21:07:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:29,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:07:29,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:29,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:29,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408969524] [2020-11-29 21:07:29,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:29,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 21:07:29,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758061466] [2020-11-29 21:07:29,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:07:29,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:29,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:07:29,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:29,454 INFO L87 Difference]: Start difference. First operand 945 states and 1237 transitions. Second operand 5 states. [2020-11-29 21:07:29,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:29,661 INFO L93 Difference]: Finished difference Result 2837 states and 3772 transitions. [2020-11-29 21:07:29,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:07:29,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-11-29 21:07:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:29,672 INFO L225 Difference]: With dead ends: 2837 [2020-11-29 21:07:29,673 INFO L226 Difference]: Without dead ends: 1899 [2020-11-29 21:07:29,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:07:29,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-11-29 21:07:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 963. [2020-11-29 21:07:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-29 21:07:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1255 transitions. [2020-11-29 21:07:29,796 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1255 transitions. Word has length 96 [2020-11-29 21:07:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:29,796 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1255 transitions. [2020-11-29 21:07:29,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:07:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1255 transitions. [2020-11-29 21:07:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 21:07:29,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:29,801 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:30,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-29 21:07:30,021 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:30,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:30,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1633157701, now seen corresponding path program 1 times [2020-11-29 21:07:30,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:30,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505909632] [2020-11-29 21:07:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:30,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 21:07:30,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:30,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:30,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 21:07:30,663 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 21:07:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:30,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505909632] [2020-11-29 21:07:30,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:30,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-11-29 21:07:30,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150471816] [2020-11-29 21:07:30,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:07:30,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:30,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:07:30,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:07:30,714 INFO L87 Difference]: Start difference. First operand 963 states and 1255 transitions. Second operand 6 states. [2020-11-29 21:07:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:31,070 INFO L93 Difference]: Finished difference Result 3022 states and 3947 transitions. [2020-11-29 21:07:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:07:31,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-11-29 21:07:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:31,082 INFO L225 Difference]: With dead ends: 3022 [2020-11-29 21:07:31,082 INFO L226 Difference]: Without dead ends: 2066 [2020-11-29 21:07:31,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:07:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-11-29 21:07:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 963. [2020-11-29 21:07:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-29 21:07:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1249 transitions. [2020-11-29 21:07:31,203 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1249 transitions. Word has length 98 [2020-11-29 21:07:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:31,205 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1249 transitions. [2020-11-29 21:07:31,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:07:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1249 transitions. [2020-11-29 21:07:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 21:07:31,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:31,207 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:31,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-29 21:07:31,424 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:31,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:31,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1043958520, now seen corresponding path program 1 times [2020-11-29 21:07:31,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:31,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147343064] [2020-11-29 21:07:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:31,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 21:07:31,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:32,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:32,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147343064] [2020-11-29 21:07:32,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:32,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-29 21:07:32,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676750643] [2020-11-29 21:07:32,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:07:32,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:32,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:07:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:07:32,191 INFO L87 Difference]: Start difference. First operand 963 states and 1249 transitions. Second operand 12 states. [2020-11-29 21:07:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:34,146 INFO L93 Difference]: Finished difference Result 4773 states and 6247 transitions. [2020-11-29 21:07:34,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:07:34,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-11-29 21:07:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:34,164 INFO L225 Difference]: With dead ends: 4773 [2020-11-29 21:07:34,164 INFO L226 Difference]: Without dead ends: 3817 [2020-11-29 21:07:34,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2020-11-29 21:07:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3817 states. [2020-11-29 21:07:34,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3817 to 1041. [2020-11-29 21:07:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-11-29 21:07:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1333 transitions. [2020-11-29 21:07:34,337 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1333 transitions. Word has length 98 [2020-11-29 21:07:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:34,338 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1333 transitions. [2020-11-29 21:07:34,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:07:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1333 transitions. [2020-11-29 21:07:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 21:07:34,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:34,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:34,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-29 21:07:34,561 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1447631356, now seen corresponding path program 1 times [2020-11-29 21:07:34,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:34,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714860251] [2020-11-29 21:07:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:35,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 21:07:35,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:35,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:35,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714860251] [2020-11-29 21:07:35,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:35,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-11-29 21:07:35,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194847089] [2020-11-29 21:07:35,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 21:07:35,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:35,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 21:07:35,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-29 21:07:35,352 INFO L87 Difference]: Start difference. First operand 1041 states and 1333 transitions. Second operand 14 states. [2020-11-29 21:07:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:37,804 INFO L93 Difference]: Finished difference Result 3629 states and 4693 transitions. [2020-11-29 21:07:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 21:07:37,805 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-11-29 21:07:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:37,819 INFO L225 Difference]: With dead ends: 3629 [2020-11-29 21:07:37,819 INFO L226 Difference]: Without dead ends: 2595 [2020-11-29 21:07:37,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-11-29 21:07:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2020-11-29 21:07:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 1041. [2020-11-29 21:07:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-11-29 21:07:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1333 transitions. [2020-11-29 21:07:38,014 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1333 transitions. Word has length 100 [2020-11-29 21:07:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:38,014 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1333 transitions. [2020-11-29 21:07:38,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 21:07:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1333 transitions. [2020-11-29 21:07:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 21:07:38,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:38,019 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:38,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-29 21:07:38,239 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:38,239 INFO L82 PathProgramCache]: Analyzing trace with hash 271615176, now seen corresponding path program 1 times [2020-11-29 21:07:38,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:38,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887204642] [2020-11-29 21:07:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:38,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:07:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:38,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:38,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887204642] [2020-11-29 21:07:38,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:38,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 21:07:38,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972738168] [2020-11-29 21:07:38,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:07:38,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:38,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:07:38,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:07:38,778 INFO L87 Difference]: Start difference. First operand 1041 states and 1333 transitions. Second operand 8 states. [2020-11-29 21:07:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:39,453 INFO L93 Difference]: Finished difference Result 3755 states and 4831 transitions. [2020-11-29 21:07:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:07:39,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-11-29 21:07:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:39,469 INFO L225 Difference]: With dead ends: 3755 [2020-11-29 21:07:39,469 INFO L226 Difference]: Without dead ends: 2721 [2020-11-29 21:07:39,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:07:39,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2020-11-29 21:07:39,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1059. [2020-11-29 21:07:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1059 states. [2020-11-29 21:07:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1351 transitions. [2020-11-29 21:07:39,689 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1351 transitions. Word has length 102 [2020-11-29 21:07:39,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:39,689 INFO L481 AbstractCegarLoop]: Abstraction has 1059 states and 1351 transitions. [2020-11-29 21:07:39,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:07:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1351 transitions. [2020-11-29 21:07:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-29 21:07:39,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:39,692 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:39,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-29 21:07:39,909 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:39,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:39,909 INFO L82 PathProgramCache]: Analyzing trace with hash -76102812, now seen corresponding path program 1 times [2020-11-29 21:07:39,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:39,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165342265] [2020-11-29 21:07:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:40,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:07:40,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:40,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:40,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165342265] [2020-11-29 21:07:40,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:40,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 21:07:40,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483154667] [2020-11-29 21:07:40,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:07:40,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:40,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:07:40,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:07:40,445 INFO L87 Difference]: Start difference. First operand 1059 states and 1351 transitions. Second operand 8 states. [2020-11-29 21:07:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:41,364 INFO L93 Difference]: Finished difference Result 4818 states and 6168 transitions. [2020-11-29 21:07:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 21:07:41,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-11-29 21:07:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:41,387 INFO L225 Difference]: With dead ends: 4818 [2020-11-29 21:07:41,387 INFO L226 Difference]: Without dead ends: 4282 [2020-11-29 21:07:41,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-11-29 21:07:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2020-11-29 21:07:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 1077. [2020-11-29 21:07:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-11-29 21:07:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1369 transitions. [2020-11-29 21:07:41,630 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1369 transitions. Word has length 104 [2020-11-29 21:07:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:41,630 INFO L481 AbstractCegarLoop]: Abstraction has 1077 states and 1369 transitions. [2020-11-29 21:07:41,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:07:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1369 transitions. [2020-11-29 21:07:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 21:07:41,633 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:41,633 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:41,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-29 21:07:41,849 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1262827424, now seen corresponding path program 1 times [2020-11-29 21:07:41,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:41,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272110440] [2020-11-29 21:07:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:42,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-29 21:07:42,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:42,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:07:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:42,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:42,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272110440] [2020-11-29 21:07:42,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:42,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2020-11-29 21:07:42,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446119150] [2020-11-29 21:07:42,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 21:07:42,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:42,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 21:07:42,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-11-29 21:07:42,755 INFO L87 Difference]: Start difference. First operand 1077 states and 1369 transitions. Second operand 17 states. [2020-11-29 21:07:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:44,515 INFO L93 Difference]: Finished difference Result 4515 states and 5823 transitions. [2020-11-29 21:07:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 21:07:44,515 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 106 [2020-11-29 21:07:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:44,532 INFO L225 Difference]: With dead ends: 4515 [2020-11-29 21:07:44,532 INFO L226 Difference]: Without dead ends: 3445 [2020-11-29 21:07:44,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-11-29 21:07:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2020-11-29 21:07:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 1095. [2020-11-29 21:07:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-11-29 21:07:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1387 transitions. [2020-11-29 21:07:44,820 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1387 transitions. Word has length 106 [2020-11-29 21:07:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:44,821 INFO L481 AbstractCegarLoop]: Abstraction has 1095 states and 1387 transitions. [2020-11-29 21:07:44,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 21:07:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1387 transitions. [2020-11-29 21:07:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 21:07:44,823 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:44,824 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:45,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-29 21:07:45,044 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:45,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:45,045 INFO L82 PathProgramCache]: Analyzing trace with hash 324495381, now seen corresponding path program 1 times [2020-11-29 21:07:45,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:45,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890383522] [2020-11-29 21:07:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:45,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:07:45,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:45,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:45,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890383522] [2020-11-29 21:07:45,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:45,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 21:07:45,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716796606] [2020-11-29 21:07:45,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:07:45,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:45,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:07:45,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:07:45,688 INFO L87 Difference]: Start difference. First operand 1095 states and 1387 transitions. Second operand 6 states. [2020-11-29 21:07:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:46,153 INFO L93 Difference]: Finished difference Result 3905 states and 5002 transitions. [2020-11-29 21:07:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:07:46,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-11-29 21:07:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:46,161 INFO L225 Difference]: With dead ends: 3905 [2020-11-29 21:07:46,162 INFO L226 Difference]: Without dead ends: 2817 [2020-11-29 21:07:46,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:07:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2020-11-29 21:07:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1491. [2020-11-29 21:07:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-11-29 21:07:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1879 transitions. [2020-11-29 21:07:46,444 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1879 transitions. Word has length 127 [2020-11-29 21:07:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:46,444 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 1879 transitions. [2020-11-29 21:07:46,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:07:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1879 transitions. [2020-11-29 21:07:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-29 21:07:46,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:46,447 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:46,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-29 21:07:46,660 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:46,661 INFO L82 PathProgramCache]: Analyzing trace with hash 386534995, now seen corresponding path program 1 times [2020-11-29 21:07:46,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:46,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341598979] [2020-11-29 21:07:46,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:47,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:07:47,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:47,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:47,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341598979] [2020-11-29 21:07:47,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:47,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 21:07:47,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159422990] [2020-11-29 21:07:47,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:07:47,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:47,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:07:47,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:07:47,356 INFO L87 Difference]: Start difference. First operand 1491 states and 1879 transitions. Second operand 6 states. [2020-11-29 21:07:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:47,788 INFO L93 Difference]: Finished difference Result 3691 states and 4678 transitions. [2020-11-29 21:07:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:07:47,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-11-29 21:07:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:47,794 INFO L225 Difference]: With dead ends: 3691 [2020-11-29 21:07:47,794 INFO L226 Difference]: Without dead ends: 2195 [2020-11-29 21:07:47,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:07:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2020-11-29 21:07:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 1491. [2020-11-29 21:07:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-11-29 21:07:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1873 transitions. [2020-11-29 21:07:48,134 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1873 transitions. Word has length 127 [2020-11-29 21:07:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:48,134 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 1873 transitions. [2020-11-29 21:07:48,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:07:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1873 transitions. [2020-11-29 21:07:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-29 21:07:48,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:48,138 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:48,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-11-29 21:07:48,352 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:48,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2112333905, now seen corresponding path program 1 times [2020-11-29 21:07:48,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:48,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243722439] [2020-11-29 21:07:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:49,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 21:07:49,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:49,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:49,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243722439] [2020-11-29 21:07:49,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 21:07:49,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 21:07:49,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949382689] [2020-11-29 21:07:49,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:07:49,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:49,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:07:49,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:07:49,085 INFO L87 Difference]: Start difference. First operand 1491 states and 1873 transitions. Second operand 6 states. [2020-11-29 21:07:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:50,713 INFO L93 Difference]: Finished difference Result 8908 states and 11199 transitions. [2020-11-29 21:07:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:07:50,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-11-29 21:07:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:50,724 INFO L225 Difference]: With dead ends: 8908 [2020-11-29 21:07:50,724 INFO L226 Difference]: Without dead ends: 8901 [2020-11-29 21:07:50,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:07:50,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8901 states. [2020-11-29 21:07:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8901 to 8717. [2020-11-29 21:07:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8717 states. [2020-11-29 21:07:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 10972 transitions. [2020-11-29 21:07:52,434 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 10972 transitions. Word has length 129 [2020-11-29 21:07:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:52,435 INFO L481 AbstractCegarLoop]: Abstraction has 8717 states and 10972 transitions. [2020-11-29 21:07:52,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:07:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 10972 transitions. [2020-11-29 21:07:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-29 21:07:52,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:52,448 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:52,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-11-29 21:07:52,668 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:52,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:52,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1595827377, now seen corresponding path program 1 times [2020-11-29 21:07:52,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:52,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545282436] [2020-11-29 21:07:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-11-29 21:07:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:07:53,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 21:07:53,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:07:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:53,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 21:07:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 21:07:53,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545282436] [2020-11-29 21:07:53,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:07:53,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 21:07:53,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175738326] [2020-11-29 21:07:53,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:07:53,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 21:07:53,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:07:53,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:07:53,362 INFO L87 Difference]: Start difference. First operand 8717 states and 10972 transitions. Second operand 4 states. [2020-11-29 21:07:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:07:56,631 INFO L93 Difference]: Finished difference Result 27683 states and 35029 transitions. [2020-11-29 21:07:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:07:56,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-11-29 21:07:56,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:07:56,665 INFO L225 Difference]: With dead ends: 27683 [2020-11-29 21:07:56,665 INFO L226 Difference]: Without dead ends: 18973 [2020-11-29 21:07:56,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:07:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18973 states. [2020-11-29 21:07:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18973 to 8753. [2020-11-29 21:07:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8753 states. [2020-11-29 21:07:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8753 states to 8753 states and 11008 transitions. [2020-11-29 21:07:58,289 INFO L78 Accepts]: Start accepts. Automaton has 8753 states and 11008 transitions. Word has length 129 [2020-11-29 21:07:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:07:58,289 INFO L481 AbstractCegarLoop]: Abstraction has 8753 states and 11008 transitions. [2020-11-29 21:07:58,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:07:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 8753 states and 11008 transitions. [2020-11-29 21:07:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-29 21:07:58,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:07:58,302 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:07:58,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-11-29 21:07:58,521 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:07:58,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:07:58,522 INFO L82 PathProgramCache]: Analyzing trace with hash -530503431, now seen corresponding path program 1 times [2020-11-29 21:07:58,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 21:07:58,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526555494] [2020-11-29 21:07:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-11-29 21:08:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:01,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 55 conjunts are in the unsatisfiable core [2020-11-29 21:08:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:01,358 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 21:08:01,358 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:01,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:01,374 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-11-29 21:08:01,374 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:01,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:01,381 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:08:01,381 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:14, output treesize:12 [2020-11-29 21:08:01,473 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:01,474 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-11-29 21:08:01,474 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:01,516 INFO L625 ElimStorePlain]: treesize reduction 14, result has 66.7 percent of original size [2020-11-29 21:08:01,521 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-11-29 21:08:01,521 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:01,532 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:01,534 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:01,534 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:27 [2020-11-29 21:08:01,737 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:01,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-11-29 21:08:01,739 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:01,821 INFO L625 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2020-11-29 21:08:01,827 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:01,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:40 [2020-11-29 21:08:02,090 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:02,090 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 99 [2020-11-29 21:08:02,091 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:02,188 INFO L625 ElimStorePlain]: treesize reduction 42, result has 57.6 percent of original size [2020-11-29 21:08:02,190 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:02,190 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:57 [2020-11-29 21:08:02,926 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:02,926 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 52 [2020-11-29 21:08:02,927 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:08:02,931 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:08:02,933 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:02,990 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:02,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526555494] [2020-11-29 21:08:02,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Unsupported sort (_ BitVec 32) [2020-11-29 21:08:02,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [871523358] [2020-11-29 21:08:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-29 21:08:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:14,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 85 conjunts are in the unsatisfiable core [2020-11-29 21:08:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:14,663 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 21:08:14,664 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:14,674 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:14,678 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-11-29 21:08:14,678 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:14,688 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:14,689 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:08:14,689 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-11-29 21:08:14,923 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:14,923 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-11-29 21:08:14,924 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:14,970 INFO L625 ElimStorePlain]: treesize reduction 14, result has 68.9 percent of original size [2020-11-29 21:08:14,974 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-11-29 21:08:14,975 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:14,988 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:14,989 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:14,989 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:30 [2020-11-29 21:08:15,274 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:15,274 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-11-29 21:08:15,275 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:15,358 INFO L625 ElimStorePlain]: treesize reduction 28, result has 60.6 percent of original size [2020-11-29 21:08:15,359 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:15,359 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:43 [2020-11-29 21:08:16,506 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:16,506 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 72 [2020-11-29 21:08:16,507 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:16,603 INFO L625 ElimStorePlain]: treesize reduction 42, result has 54.8 percent of original size [2020-11-29 21:08:16,605 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:16,605 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:51 [2020-11-29 21:08:17,797 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:17,797 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 30 treesize of output 76 [2020-11-29 21:08:17,798 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 21:08:17,799 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:08:17,801 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:17,884 INFO L625 ElimStorePlain]: treesize reduction 10, result has 82.5 percent of original size [2020-11-29 21:08:17,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Unsupported sort (_ BitVec 32) [2020-11-29 21:08:17,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493627058] [2020-11-29 21:08:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8008a26c-1ee2-4797-9eeb-526fda5f5ec0/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:08:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:08:18,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 72 conjunts are in the unsatisfiable core [2020-11-29 21:08:18,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:08:18,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 21:08:18,814 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:18,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:18,825 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-11-29 21:08:18,825 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:18,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:18,832 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:08:18,833 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:14, output treesize:12 [2020-11-29 21:08:18,951 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:18,952 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-11-29 21:08:18,952 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:18,992 INFO L625 ElimStorePlain]: treesize reduction 14, result has 66.7 percent of original size [2020-11-29 21:08:18,997 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-11-29 21:08:18,998 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:19,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:19,015 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:19,015 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:27 [2020-11-29 21:08:19,096 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:19,096 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-11-29 21:08:19,097 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:19,177 INFO L625 ElimStorePlain]: treesize reduction 28, result has 58.8 percent of original size [2020-11-29 21:08:19,178 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:19,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:40 [2020-11-29 21:08:20,598 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:20,598 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 101 [2020-11-29 21:08:20,599 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 21:08:20,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:08:20,615 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:20,753 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-11-29 21:08:20,754 INFO L625 ElimStorePlain]: treesize reduction 44, result has 57.3 percent of original size [2020-11-29 21:08:20,754 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:20,755 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:59 [2020-11-29 21:08:22,236 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:22,237 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 52 [2020-11-29 21:08:22,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:08:22,239 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:22,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:22,279 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:22,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:53 [2020-11-29 21:08:24,475 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 21:08:28,719 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 21:08:40,953 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 21:08:43,161 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 21:08:45,363 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 21:08:49,585 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 21:08:53,826 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 21:08:53,860 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2020-11-29 21:08:53,879 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2020-11-29 21:08:53,879 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:53,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:53,885 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:08:53,926 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:53,926 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:53,927 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:53 [2020-11-29 21:08:53,965 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2020-11-29 21:08:53,982 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2020-11-29 21:08:53,982 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:53,989 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:53,990 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:08:54,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:54,032 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:54,033 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:53 [2020-11-29 21:08:54,042 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_100|], 6=[|v_#memory_int_109|]} [2020-11-29 21:08:54,048 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 21:08:54,123 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:54,133 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2020-11-29 21:08:54,162 INFO L350 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2020-11-29 21:08:54,162 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9 [2020-11-29 21:08:54,163 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 21:08:54,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:54,174 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 21:08:54,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 21:08:54,228 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Unsupported sort (_ BitVec 32) [2020-11-29 21:08:54,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:08:54,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-29 21:08:54,229 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-29 21:08:54,229 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 21:08:54,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-29 21:08:54,892 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-29 21:08:54,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:08:54 BoogieIcfgContainer [2020-11-29 21:08:54,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:08:54,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:08:54,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:08:54,894 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:08:54,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:07:20" (3/4) ... [2020-11-29 21:08:54,897 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:08:54,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:08:54,898 INFO L168 Benchmark]: Toolchain (without parser) took 100847.18 ms. Allocated memory was 56.6 MB in the beginning and 3.0 GB in the end (delta: 3.0 GB). Free memory was 29.3 MB in the beginning and 2.6 GB in the end (delta: -2.6 GB). Peak memory consumption was 378.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:54,898 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:54,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1266.48 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 29.1 MB in the beginning and 36.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:54,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 133.15 ms. Allocated memory is still 79.7 MB. Free memory was 36.8 MB in the beginning and 29.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:54,900 INFO L168 Benchmark]: Boogie Preprocessor took 161.86 ms. Allocated memory is still 79.7 MB. Free memory was 29.6 MB in the beginning and 38.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:54,900 INFO L168 Benchmark]: RCFGBuilder took 5034.78 ms. Allocated memory was 79.7 MB in the beginning and 123.7 MB in the end (delta: 44.0 MB). Free memory was 38.5 MB in the beginning and 41.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:54,901 INFO L168 Benchmark]: TraceAbstraction took 94237.03 ms. Allocated memory was 123.7 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 41.3 MB in the beginning and 2.6 GB in the end (delta: -2.6 GB). Peak memory consumption was 320.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:08:54,901 INFO L168 Benchmark]: Witness Printer took 3.93 ms. Allocated memory is still 3.0 GB. Free memory is still 2.6 GB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:08:54,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1266.48 ms. Allocated memory was 56.6 MB in the beginning and 79.7 MB in the end (delta: 23.1 MB). Free memory was 29.1 MB in the beginning and 36.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 133.15 ms. Allocated memory is still 79.7 MB. Free memory was 36.8 MB in the beginning and 29.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 161.86 ms. Allocated memory is still 79.7 MB. Free memory was 29.6 MB in the beginning and 38.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5034.78 ms. Allocated memory was 79.7 MB in the beginning and 123.7 MB in the end (delta: 44.0 MB). Free memory was 38.5 MB in the beginning and 41.3 MB in the end (delta: -2.8 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 94237.03 ms. Allocated memory was 123.7 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 41.3 MB in the beginning and 2.6 GB in the end (delta: -2.6 GB). Peak memory consumption was 320.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.93 ms. Allocated memory is still 3.0 GB. Free memory is still 2.6 GB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of large string literal at line 3350, overapproximation of strlen at line 3789. Possible FailurePath: [L3543] int LDV_IN_INTERRUPT = 1; [L3544] int ref_cnt ; [L3545] int ldv_state_variable_1 ; [L3546] int usb_counter ; [L3547] struct usb_interface *usb_acecad_driver_group1 ; [L3548] int ldv_state_variable_0 ; [L3832-L3836] static struct usb_device_id usb_acecad_id_table[3U] = { {3U, 1120U, 4U, (unsigned short)0, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 0UL}, {3U, 1120U, 8U, (unsigned short)0, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 1UL}}; [L3837] struct usb_device_id const __mod_usb_device_table ; [L3838-L3843] static struct usb_driver usb_acecad_driver = {"usb_acecad", & usb_acecad_probe, & usb_acecad_disconnect, 0, 0, 0, 0, 0, 0, (struct usb_device_id const *)(& usb_acecad_id_table), {{{{{0U}, 0U, 0U, 0, {0, {0, 0}, 0, 0, 0UL}}}}, {0, 0}}, {{0, 0, 0, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, 0}, (unsigned char)0, (unsigned char)0, (unsigned char)0}; [L3865] int ldv_retval_0 ; [L3866] int ldv_retval_1 ; [L4066] int URB_STATE = 0; [L4067] int DEV_STATE = 0; [L4068] int INTERF_STATE = 0; [L4069] int SERIAL_STATE = 0; [L4070] void *usb_intfdata = (void *)0; [L4071] struct urb *int_urb = (struct urb *)0; [L4072] struct urb *bulk_urb = (struct urb *)0; [L4073] void (*completeFnInt)(struct urb * ) ; [L4074] void (*completeFnBulk)(struct urb * ) ; [L3880] struct usb_device_id *ldvarg0 ; [L3881] void *tmp ; [L3882] int tmp___0 ; [L3883] int tmp___1 ; [L3884] int tmp___2 ; [L3497] void *p ; [L3498] void *tmp ; [L3500] tmp = calloc(1UL, size) [L3501] p = tmp [L3459] COND FALSE !(!cond) [L3503] return (p); [L3886] tmp = ldv_init_zalloc(24UL) [L3887] ldvarg0 = (struct usb_device_id *)tmp [L3889] ldv_state_variable_1 = 0 [L3890] ref_cnt = 0 [L3891] ldv_state_variable_0 = 1 [L3893] tmp___0 = __VERIFIER_nondet_int() [L3895] case 0: [L3925] case 1: [L3926] COND TRUE ldv_state_variable_0 != 0 [L3927] tmp___2 = __VERIFIER_nondet_int() [L3929] case 0: [L3937] case 1: [L3938] COND TRUE ldv_state_variable_0 == 1 [L3846] int result ; [L3847] int tmp ; [L3359] int tmp ; [L3980] ldv_func_ret_type ldv_func_res ; [L3981] int tmp ; [L4343] return __VERIFIER_nondet_int(); [L3983] tmp = usb_register_driver(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L3984] ldv_func_res = tmp [L3985] ldv_state_variable_1 = 1 [L3986] usb_counter = 0 [L3871] void *tmp ; [L3497] void *p ; [L3498] void *tmp ; [L3500] tmp = calloc(1UL, size) [L3501] p = tmp [L3459] COND FALSE !(!cond) [L3503] return (p); [L3873] tmp = ldv_init_zalloc(1248UL) [L3874] usb_acecad_driver_group1 = (struct usb_interface *)tmp [L3988] return (ldv_func_res); [L3361] tmp = ldv_usb_register_driver_2(driver, & __this_module, "acecad") [L3362] return (tmp); [L3849] tmp = usb_register(& usb_acecad_driver) [L3850] result = tmp [L3851] COND TRUE result == 0 [L3855] return (result); [L3939] ldv_retval_1 = usb_acecad_init() [L3940] COND TRUE ldv_retval_1 == 0 [L3941] ldv_state_variable_0 = 3 [L3944] COND FALSE !(ldv_retval_1 != 0) [L3893] tmp___0 = __VERIFIER_nondet_int() [L3895] case 0: [L3896] COND TRUE ldv_state_variable_1 != 0 [L3897] tmp___1 = __VERIFIER_nondet_int() [L3899] case 0: [L3900] COND TRUE ldv_state_variable_1 == 1 [L3693] struct usb_device *dev ; [L3694] struct usb_device *tmp ; [L3695] struct usb_host_interface *interface ; [L3696] struct usb_endpoint_descriptor *endpoint ; [L3697] struct usb_acecad *acecad ; [L3698] struct input_dev *input_dev ; [L3699] int pipe ; [L3700] int maxp ; [L3701] int err ; [L3702] int tmp___0 ; [L3703] unsigned int tmp___1 ; [L3704] __u16 tmp___2 ; [L3705] void *tmp___3 ; [L3706] void *tmp___4 ; [L3707] size_t tmp___5 ; [L3708] size_t tmp___6 ; [L3971] struct usb_device *tmp ; [L4189] void *result ; [L3463] void *p ; [L3464] void *tmp ; [L3465] int tmp___0 ; [L3467] tmp___0 = __VERIFIER_nondet_int() [L3468] COND FALSE !(tmp___0 != 0) [L3471] tmp = malloc(size) [L3472] p = tmp [L3459] COND FALSE !(!cond) [L3474] return (p); [L4194] result = ldv_malloc(sizeof(struct usb_device)) [L4195] COND FALSE !((unsigned long )result == (unsigned long )((void *)0)) [L4199] return ((struct usb_device *)result); [L3973] tmp = ldv_interface_to_usbdev() [L3974] return (tmp); [L3710] tmp = interface_to_usbdev(intf) [L3711] dev = tmp [L3712] EXPR intf->cur_altsetting [L3712] interface = intf->cur_altsetting [L3713] EXPR interface->desc.bNumEndpoints [L3713] COND FALSE !((unsigned int )interface->desc.bNumEndpoints != 1U) [L3717] EXPR interface->endpoint [L3717] endpoint = & (interface->endpoint)->desc [L3314] int tmp ; [L3315] int tmp___0 ; [L3316] int tmp___1 ; [L3309] EXPR epd->bmAttributes [L3309] return (((int )epd->bmAttributes & 3) == 3); [L3318] tmp = usb_endpoint_xfer_int(epd) [L3319] COND TRUE tmp != 0 [L3303] EXPR epd->bEndpointAddress [L3303] return ((int )((signed char )epd->bEndpointAddress) < 0); [L3320] tmp___0 = usb_endpoint_dir_in(epd) [L3321] COND TRUE tmp___0 != 0 [L3322] tmp___1 = 1 [L3329] return (tmp___1); [L3718] tmp___0 = usb_endpoint_is_int_in((struct usb_endpoint_descriptor const *)endpoint) [L3719] COND FALSE !(tmp___0 == 0) [L3723] EXPR endpoint->bEndpointAddress [L3383] EXPR dev->devnum [L3383] return ((unsigned int )(dev->devnum << 8) | (endpoint << 15)); [L3723] tmp___1 = __create_pipe(dev, (unsigned int )endpoint->bEndpointAddress) [L3724] pipe = (int )(tmp___1 | 1073741952U) [L3388] struct usb_host_endpoint *ep ; [L3389] unsigned int epnum ; [L3390] int __ret_warn_on ; [L3391] long tmp ; [L3392] int __ret_warn_on___0 ; [L3393] long tmp___0 ; [L3395] epnum = (unsigned int )(pipe >> 15) & 15U [L3396] COND FALSE !(is_out != 0) [L3406] __ret_warn_on___0 = (pipe & 128) == 0 [L3540] return (exp); [L3407] tmp___0 = ldv__builtin_expect(__ret_warn_on___0 != 0, 0L) [L3408] COND FALSE !(tmp___0 != 0L) [L3540] return (exp); [L3413] EXPR udev->ep_in[epnum] [L3413] ep = udev->ep_in[epnum] [L3415] COND TRUE (unsigned long )ep == (unsigned long )((struct usb_host_endpoint *)0) [L3416] return (0U); [L3725] tmp___2 = usb_maxpacket(dev, pipe, (pipe & 128) == 0) [L3726] maxp = (int )tmp___2 [L3447] void *tmp ; [L3438] void *tmp___1 ; [L3463] void *p ; [L3464] void *tmp ; [L3465] int tmp___0 ; [L3467] tmp___0 = __VERIFIER_nondet_int() [L3468] COND FALSE !(tmp___0 != 0) [L3471] tmp = malloc(size) [L3472] p = tmp [L3459] COND FALSE !(!cond) [L3474] return (p); [L3433] return ldv_malloc(size); [L3440] tmp___1 = __kmalloc(size, flags) [L3441] return (tmp___1); [L3449] tmp = kmalloc(size, flags | 32768U) [L3450] return (tmp); [L3727] tmp___3 = kzalloc(232UL, 208U) [L3728] acecad = (struct usb_acecad *)tmp___3 [L3447] void *tmp ; [L3438] void *tmp___1 ; [L3463] void *p ; [L3464] void *tmp ; [L3465] int tmp___0 ; [L3467] tmp___0 = __VERIFIER_nondet_int() [L3468] COND FALSE !(tmp___0 != 0) [L3471] tmp = malloc(size) [L3472] p = tmp [L3459] COND FALSE !(!cond) [L3474] return (p); [L3433] return ldv_malloc(size); [L3440] tmp___1 = __kmalloc(size, flags) [L3441] return (tmp___1); [L3449] tmp = kmalloc(size, flags | 32768U) [L3450] return (tmp); [L3551] return kzalloc(sizeof(struct input_dev), 0x10u | 0x40u | 0x80u); [L3729] input_dev = input_allocate_device() [L3730] COND FALSE !((unsigned long )acecad == (unsigned long )((struct usb_acecad *)0) || (unsigned long )input_dev == (unsigned long )((struct input_dev *)0)) [L3463] void *p ; [L3464] void *tmp ; [L3465] int tmp___0 ; [L3467] tmp___0 = __VERIFIER_nondet_int() [L3468] COND FALSE !(tmp___0 != 0) [L3471] tmp = malloc(size) [L3472] p = tmp [L3459] COND FALSE !(!cond) [L3474] return (p); [L4324] return ldv_malloc(0UL); [L3735] tmp___4 = usb_alloc_coherent(dev, 8UL, 208U, & acecad->data_dma) [L3736] acecad->data = (unsigned char *)tmp___4 [L3737] EXPR acecad->data [L3737] COND FALSE !((unsigned long )acecad->data == (unsigned long )((unsigned char *)0U)) [L4009] ldv_func_ret_type___0 ldv_func_res ; [L4010] struct urb *tmp ; [L3463] void *p ; [L3464] void *tmp ; [L3465] int tmp___0 ; [L3467] tmp___0 = __VERIFIER_nondet_int() [L3468] COND FALSE !(tmp___0 != 0) [L3471] tmp = malloc(size) [L3472] p = tmp [L3459] COND FALSE !(!cond) [L3474] return (p); [L4327] return ldv_malloc(sizeof(struct urb)); [L4012] tmp = usb_alloc_urb(ldv_func_arg1, ldv_func_arg2) [L4013] ldv_func_res = tmp [L4098] COND TRUE (unsigned long )res != (unsigned long )((struct urb *)0) [L4099] URB_STATE = URB_STATE + 1 [L4015] return (ldv_func_res); [L3742] acecad->irq = ldv_usb_alloc_urb_5(0, 208U) [L3743] EXPR acecad->irq [L3743] COND FALSE !((unsigned long )acecad->irq == (unsigned long )((struct urb *)0)) [L3748] acecad->usbdev = dev [L3749] acecad->input = input_dev [L3750] EXPR dev->manufacturer [L3750] COND FALSE !((unsigned long )dev->manufacturer != (unsigned long )((char *)0)) [L3754] EXPR dev->product [L3754] COND FALSE !((unsigned long )dev->product != (unsigned long )((char *)0)) [L3348] int actual ; [L3350] EXPR dev->bus [L3350] EXPR (dev->bus)->bus_name [L3350] actual = snprintf(buf, size, "usb-%s-%s", (dev->bus)->bus_name, (char *)(& dev->devpath)) [L3351] EXPR (int )size > actual ? actual : -1 [L3351] return ((int )size > actual ? actual : -1); [L4317] return __VERIFIER_nondet_ulong(); [L3764] input_dev->name = (char const *)(& acecad->name) [L3765] input_dev->phys = (char const *)(& acecad->phys) [L3600] id->bustype = 3U [L3601] EXPR dev->descriptor.idVendor [L3601] id->vendor = dev->descriptor.idVendor [L3602] EXPR dev->descriptor.idProduct [L3602] id->product = dev->descriptor.idProduct [L3603] EXPR dev->descriptor.bcdDevice [L3603] id->version = dev->descriptor.bcdDevice [L3767] input_dev->dev.parent = & intf->dev [L3769] input_dev->open = & usb_acecad_open [L3770] input_dev->close = & usb_acecad_close [L3771] input_dev->evbit[0] = 10UL [L3772] input_dev->keybit[5] = 7169UL [L3773] id->driver_info [L3774] case 0UL: [L3785] case 1UL: [L3798] acecad->irq [L3798] acecad->data [L3799] 8 < maxp ? 8 : maxp [L3799] endpoint->bInterval [L4120] struct urb *value ; [L4121] int tmp___0 ; [L3463] void *p ; [L3464] void *tmp ; [L3465] int tmp___0 ; [L3467] tmp___0 = __VERIFIER_nondet_int() [L3468] COND FALSE !(tmp___0 != 0) [L3471] tmp = malloc(size) [L3472] p = tmp [L3459] COND FALSE !(!cond) [L3474] return (p); [L4123] value = ldv_malloc(sizeof(struct urb)) [L4124] COND FALSE !((unsigned long )value == (unsigned long )((struct urb *)0)) [L3516] int tmp ; [L3518] tmp = __VERIFIER_nondet_int() [L3519] return (tmp); [L4128] tmp___0 = ldv_undef_int() [L4129] COND FALSE !(tmp___0 != 0) [L3800] EXPR acecad->irq [L3800] EXPR acecad->data_dma [L3800] (acecad->irq)->transfer_dma = acecad->data_dma [L3801] EXPR acecad->irq [L3801] EXPR acecad->irq [L3801] EXPR (acecad->irq)->transfer_flags [L3801] (acecad->irq)->transfer_flags = (acecad->irq)->transfer_flags | 4U [L3802] EXPR acecad->input [L4300] return __VERIFIER_nondet_int(); [L3802] err = input_register_device(acecad->input) [L3803] COND TRUE err != 0 [L3810] acecad->data [L3810] acecad->data_dma [L3814] return (err); [L3901] ldv_retval_0 = usb_acecad_probe(usb_acecad_driver_group1, (struct usb_device_id const *)ldvarg0) [L3902] COND FALSE !(ldv_retval_0 == 0) [L3893] tmp___0 = __VERIFIER_nondet_int() [L3895] case 0: [L3925] case 1: [L3926] COND TRUE ldv_state_variable_0 != 0 [L3927] tmp___2 = __VERIFIER_nondet_int() [L3929] case 0: [L3930] COND TRUE ldv_state_variable_0 == 3 && ref_cnt == 0 [L4055] ldv_state_variable_1 = 0 [L3932] ldv_state_variable_0 = 2 [L4267] COND TRUE URB_STATE != 0 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 187 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 94.1s, OverallIterations: 21, TraceHistogramMax: 3, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6267 SDtfs, 13084 SDslu, 19259 SDs, 0 SdLazy, 1187 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3224 GetRequests, 3090 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8753occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 27106 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1595 NumberOfCodeBlocks, 1595 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 3150 ConstructedInterpolants, 1 QuantifiedInterpolants, 479574 SizeOfPredicates, 114 NumberOfNonLiveVariables, 11308 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 40 InterpolantComputations, 38 PerfectInterpolantSequences, 206/220 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...