./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:06:28,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:06:28,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:06:28,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:06:28,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:06:28,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:06:28,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:06:28,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:06:28,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:06:28,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:06:28,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:06:28,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:06:28,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:06:28,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:06:28,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:06:28,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:06:28,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:06:28,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:06:28,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:06:28,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:06:28,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:06:28,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:06:28,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:06:28,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:06:28,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:06:28,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:06:28,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:06:28,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:06:28,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:06:28,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:06:28,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:06:28,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:06:28,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:06:28,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:06:28,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:06:28,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:06:28,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:06:28,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:06:28,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:06:28,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:06:28,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:06:28,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:06:28,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:06:28,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:06:28,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:06:28,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:06:28,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:06:28,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:06:28,990 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:06:28,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:06:28,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:06:28,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:06:28,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:06:28,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:06:28,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:06:28,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:06:28,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:06:28,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:06:28,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:06:28,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:06:28,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:06:28,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:06:28,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:06:28,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:06:28,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:06:28,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:06:28,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:06:28,993 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:06:28,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:06:28,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:06:28,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:06:28,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d [2021-11-06 18:06:29,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:06:29,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:06:29,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:06:29,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:06:29,212 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:06:29,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-06 18:06:29,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e24a885da/d2097f7f386f4c789b612ab10e900f05/FLAGa3b2d19a1 [2021-11-06 18:06:29,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:06:29,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-06 18:06:29,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e24a885da/d2097f7f386f4c789b612ab10e900f05/FLAGa3b2d19a1 [2021-11-06 18:06:29,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e24a885da/d2097f7f386f4c789b612ab10e900f05 [2021-11-06 18:06:29,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:06:29,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:06:30,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:06:30,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:06:30,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:06:30,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:06:29" (1/1) ... [2021-11-06 18:06:30,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5e818f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:30, skipping insertion in model container [2021-11-06 18:06:30,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:06:29" (1/1) ... [2021-11-06 18:06:30,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:06:30,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:06:32,137 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-06 18:06:32,141 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-06 18:06:32,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:06:32,207 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:06:32,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2021-11-06 18:06:32,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2021-11-06 18:06:32,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:06:32,634 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:06:32,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32 WrapperNode [2021-11-06 18:06:32,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:06:32,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:06:32,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:06:32,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:06:32,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:32,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:35,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:06:35,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:06:35,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:06:35,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:06:35,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:35,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:35,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:35,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:36,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:37,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:37,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:37,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:06:37,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:06:37,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:06:37,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:06:37,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (1/1) ... [2021-11-06 18:06:37,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:06:37,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:06:37,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:06:37,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:06:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 18:06:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:06:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:06:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:06:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:06:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:06:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:06:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:06:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:06:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:06:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:06:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:06:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:06:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:06:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:06:37,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:17:43,558 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:17:43,559 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:17:43,559 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:17:43,559 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:17:43,562 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:17:43,563 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:17:43,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:17:43,611 INFO L299 CfgBuilder]: Removed 17746 assume(true) statements. [2021-11-06 18:17:43,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:17:43 BoogieIcfgContainer [2021-11-06 18:17:43,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:17:43,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:17:43,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:17:43,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:17:43,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:06:29" (1/3) ... [2021-11-06 18:17:43,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bdcce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:17:43, skipping insertion in model container [2021-11-06 18:17:43,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:06:32" (2/3) ... [2021-11-06 18:17:43,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bdcce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:17:43, skipping insertion in model container [2021-11-06 18:17:43,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:17:43" (3/3) ... [2021-11-06 18:17:43,631 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2021-11-06 18:17:43,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:17:43,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-06 18:17:43,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:17:43,922 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 18:17:43,922 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-06 18:17:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 15629 states, 15622 states have (on average 1.3722314684419408) internal successors, (21437), 15628 states have internal predecessors, (21437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:44,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 18:17:44,074 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:44,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:17:44,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:17:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:44,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2079197412, now seen corresponding path program 1 times [2021-11-06 18:17:44,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:44,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027444700] [2021-11-06 18:17:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:44,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:17:44,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:44,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027444700] [2021-11-06 18:17:44,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027444700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:44,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:44,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:44,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308266820] [2021-11-06 18:17:44,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:17:44,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:17:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:44,726 INFO L87 Difference]: Start difference. First operand has 15629 states, 15622 states have (on average 1.3722314684419408) internal successors, (21437), 15628 states have internal predecessors, (21437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:47,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:47,696 INFO L93 Difference]: Finished difference Result 33576 states and 46071 transitions. [2021-11-06 18:17:47,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:47,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 18:17:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:47,769 INFO L225 Difference]: With dead ends: 33576 [2021-11-06 18:17:47,769 INFO L226 Difference]: Without dead ends: 17353 [2021-11-06 18:17:47,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17353 states. [2021-11-06 18:17:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17353 to 17347. [2021-11-06 18:17:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17347 states, 17340 states have (on average 1.3474625144175316) internal successors, (23365), 17346 states have internal predecessors, (23365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17347 states to 17347 states and 23365 transitions. [2021-11-06 18:17:48,594 INFO L78 Accepts]: Start accepts. Automaton has 17347 states and 23365 transitions. Word has length 73 [2021-11-06 18:17:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:48,594 INFO L470 AbstractCegarLoop]: Abstraction has 17347 states and 23365 transitions. [2021-11-06 18:17:48,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17347 states and 23365 transitions. [2021-11-06 18:17:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 18:17:48,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:48,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:17:48,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:17:48,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:17:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash 608842088, now seen corresponding path program 1 times [2021-11-06 18:17:48,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:48,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832101390] [2021-11-06 18:17:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:48,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:17:48,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:48,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832101390] [2021-11-06 18:17:48,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832101390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:48,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:48,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:48,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155267403] [2021-11-06 18:17:48,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:17:48,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:17:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:48,793 INFO L87 Difference]: Start difference. First operand 17347 states and 23365 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:52,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:52,014 INFO L93 Difference]: Finished difference Result 47394 states and 63861 transitions. [2021-11-06 18:17:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:52,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 18:17:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:52,101 INFO L225 Difference]: With dead ends: 47394 [2021-11-06 18:17:52,101 INFO L226 Difference]: Without dead ends: 30115 [2021-11-06 18:17:52,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30115 states. [2021-11-06 18:17:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30115 to 28602. [2021-11-06 18:17:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28602 states, 28595 states have (on average 1.3477531036894561) internal successors, (38539), 28601 states have internal predecessors, (38539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28602 states to 28602 states and 38539 transitions. [2021-11-06 18:17:52,824 INFO L78 Accepts]: Start accepts. Automaton has 28602 states and 38539 transitions. Word has length 84 [2021-11-06 18:17:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:52,824 INFO L470 AbstractCegarLoop]: Abstraction has 28602 states and 38539 transitions. [2021-11-06 18:17:52,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 28602 states and 38539 transitions. [2021-11-06 18:17:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 18:17:52,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:52,827 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:17:52,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:17:52,828 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:17:52,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash 629054439, now seen corresponding path program 1 times [2021-11-06 18:17:52,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:52,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455887149] [2021-11-06 18:17:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:52,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:17:53,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:53,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455887149] [2021-11-06 18:17:53,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455887149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:53,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:53,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:53,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179107577] [2021-11-06 18:17:53,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:17:53,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:17:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:53,178 INFO L87 Difference]: Start difference. First operand 28602 states and 38539 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:56,117 INFO L93 Difference]: Finished difference Result 59527 states and 80239 transitions. [2021-11-06 18:17:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-06 18:17:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:56,181 INFO L225 Difference]: With dead ends: 59527 [2021-11-06 18:17:56,181 INFO L226 Difference]: Without dead ends: 30993 [2021-11-06 18:17:56,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2021-11-06 18:17:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 30983. [2021-11-06 18:17:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30983 states, 30976 states have (on average 1.3474625516528926) internal successors, (41739), 30982 states have internal predecessors, (41739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30983 states to 30983 states and 41739 transitions. [2021-11-06 18:17:56,913 INFO L78 Accepts]: Start accepts. Automaton has 30983 states and 41739 transitions. Word has length 101 [2021-11-06 18:17:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:56,915 INFO L470 AbstractCegarLoop]: Abstraction has 30983 states and 41739 transitions. [2021-11-06 18:17:56,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 30983 states and 41739 transitions. [2021-11-06 18:17:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:17:56,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:56,921 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:17:56,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:17:56,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:17:56,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -658095963, now seen corresponding path program 1 times [2021-11-06 18:17:56,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:56,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864263173] [2021-11-06 18:17:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:56,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:17:57,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:57,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864263173] [2021-11-06 18:17:57,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864263173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:57,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:57,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:57,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152152349] [2021-11-06 18:17:57,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:17:57,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:17:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:57,139 INFO L87 Difference]: Start difference. First operand 30983 states and 41739 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:00,033 INFO L93 Difference]: Finished difference Result 64279 states and 86619 transitions. [2021-11-06 18:18:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:00,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-06 18:18:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:00,271 INFO L225 Difference]: With dead ends: 64279 [2021-11-06 18:18:00,276 INFO L226 Difference]: Without dead ends: 33364 [2021-11-06 18:18:00,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33364 states. [2021-11-06 18:18:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33364 to 33354. [2021-11-06 18:18:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33354 states, 33347 states have (on average 1.3471976489639248) internal successors, (44925), 33353 states have internal predecessors, (44925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33354 states to 33354 states and 44925 transitions. [2021-11-06 18:18:00,963 INFO L78 Accepts]: Start accepts. Automaton has 33354 states and 44925 transitions. Word has length 138 [2021-11-06 18:18:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:00,964 INFO L470 AbstractCegarLoop]: Abstraction has 33354 states and 44925 transitions. [2021-11-06 18:18:00,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 33354 states and 44925 transitions. [2021-11-06 18:18:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-06 18:18:00,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:00,967 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:18:00,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:18:00,967 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:18:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:00,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1270176739, now seen corresponding path program 1 times [2021-11-06 18:18:00,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:00,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229657910] [2021-11-06 18:18:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:00,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:18:01,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:01,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229657910] [2021-11-06 18:18:01,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229657910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:01,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:01,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:01,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131435973] [2021-11-06 18:18:01,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:01,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:01,144 INFO L87 Difference]: Start difference. First operand 33354 states and 44925 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:03,994 INFO L93 Difference]: Finished difference Result 69027 states and 93003 transitions. [2021-11-06 18:18:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:03,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-06 18:18:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:04,051 INFO L225 Difference]: With dead ends: 69027 [2021-11-06 18:18:04,052 INFO L226 Difference]: Without dead ends: 35741 [2021-11-06 18:18:04,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35741 states. [2021-11-06 18:18:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35741 to 35731. [2021-11-06 18:18:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35731 states, 35724 states have (on average 1.3469096405777627) internal successors, (48117), 35730 states have internal predecessors, (48117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35731 states to 35731 states and 48117 transitions. [2021-11-06 18:18:04,992 INFO L78 Accepts]: Start accepts. Automaton has 35731 states and 48117 transitions. Word has length 138 [2021-11-06 18:18:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:04,993 INFO L470 AbstractCegarLoop]: Abstraction has 35731 states and 48117 transitions. [2021-11-06 18:18:04,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 35731 states and 48117 transitions. [2021-11-06 18:18:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-06 18:18:04,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:04,997 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:18:04,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:18:04,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:18:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash -869442390, now seen corresponding path program 1 times [2021-11-06 18:18:04,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:05,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322173784] [2021-11-06 18:18:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:05,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:18:05,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:05,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322173784] [2021-11-06 18:18:05,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322173784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:05,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:05,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:05,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732414891] [2021-11-06 18:18:05,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:05,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:05,196 INFO L87 Difference]: Start difference. First operand 35731 states and 48117 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:08,089 INFO L93 Difference]: Finished difference Result 73777 states and 99379 transitions. [2021-11-06 18:18:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-11-06 18:18:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:08,153 INFO L225 Difference]: With dead ends: 73777 [2021-11-06 18:18:08,153 INFO L226 Difference]: Without dead ends: 38114 [2021-11-06 18:18:08,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38114 states. [2021-11-06 18:18:08,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38114 to 38104. [2021-11-06 18:18:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38104 states, 38097 states have (on average 1.3466939654041001) internal successors, (51305), 38103 states have internal predecessors, (51305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38104 states to 38104 states and 51305 transitions. [2021-11-06 18:18:08,991 INFO L78 Accepts]: Start accepts. Automaton has 38104 states and 51305 transitions. Word has length 183 [2021-11-06 18:18:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:08,992 INFO L470 AbstractCegarLoop]: Abstraction has 38104 states and 51305 transitions. [2021-11-06 18:18:08,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:08,992 INFO L276 IsEmpty]: Start isEmpty. Operand 38104 states and 51305 transitions. [2021-11-06 18:18:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-06 18:18:08,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:08,996 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:18:08,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:18:08,996 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:18:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1058830312, now seen corresponding path program 1 times [2021-11-06 18:18:08,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:08,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144505461] [2021-11-06 18:18:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:08,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:18:09,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:09,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144505461] [2021-11-06 18:18:09,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144505461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:09,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:09,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:09,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734419330] [2021-11-06 18:18:09,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:09,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:09,195 INFO L87 Difference]: Start difference. First operand 38104 states and 51305 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:12,273 INFO L93 Difference]: Finished difference Result 78525 states and 105759 transitions. [2021-11-06 18:18:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:12,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2021-11-06 18:18:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:12,332 INFO L225 Difference]: With dead ends: 78525 [2021-11-06 18:18:12,332 INFO L226 Difference]: Without dead ends: 40489 [2021-11-06 18:18:12,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40489 states. [2021-11-06 18:18:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40489 to 40479. [2021-11-06 18:18:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40479 states, 40472 states have (on average 1.346486459774659) internal successors, (54495), 40478 states have internal predecessors, (54495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40479 states to 40479 states and 54495 transitions. [2021-11-06 18:18:13,216 INFO L78 Accepts]: Start accepts. Automaton has 40479 states and 54495 transitions. Word has length 183 [2021-11-06 18:18:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:13,217 INFO L470 AbstractCegarLoop]: Abstraction has 40479 states and 54495 transitions. [2021-11-06 18:18:13,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 40479 states and 54495 transitions. [2021-11-06 18:18:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-06 18:18:13,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:13,222 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:18:13,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 18:18:13,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:18:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1484080607, now seen corresponding path program 1 times [2021-11-06 18:18:13,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:13,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100166337] [2021-11-06 18:18:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:13,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:18:13,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:13,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100166337] [2021-11-06 18:18:13,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100166337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:13,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:13,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:18:13,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348359390] [2021-11-06 18:18:13,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:18:13,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:18:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:18:13,413 INFO L87 Difference]: Start difference. First operand 40479 states and 54495 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:17,154 INFO L93 Difference]: Finished difference Result 123624 states and 166464 transitions. [2021-11-06 18:18:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:18:17,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-06 18:18:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:17,316 INFO L225 Difference]: With dead ends: 123624 [2021-11-06 18:18:17,316 INFO L226 Difference]: Without dead ends: 83213 [2021-11-06 18:18:17,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:18:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83213 states. [2021-11-06 18:18:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83213 to 42840. [2021-11-06 18:18:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42840 states, 42833 states have (on average 1.346415147199589) internal successors, (57671), 42839 states have internal predecessors, (57671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42840 states to 42840 states and 57671 transitions. [2021-11-06 18:18:18,575 INFO L78 Accepts]: Start accepts. Automaton has 42840 states and 57671 transitions. Word has length 210 [2021-11-06 18:18:18,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:18,575 INFO L470 AbstractCegarLoop]: Abstraction has 42840 states and 57671 transitions. [2021-11-06 18:18:18,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 42840 states and 57671 transitions. [2021-11-06 18:18:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 18:18:18,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:18,580 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:18:18,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 18:18:18,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:18:18,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:18,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2140552918, now seen corresponding path program 1 times [2021-11-06 18:18:18,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:18,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879284914] [2021-11-06 18:18:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:18,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:18:18,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:18,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879284914] [2021-11-06 18:18:18,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879284914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:18,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:18,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:18:18,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207148541] [2021-11-06 18:18:18,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:18:18,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:18,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:18:18,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:18:18,955 INFO L87 Difference]: Start difference. First operand 42840 states and 57671 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:22,949 INFO L93 Difference]: Finished difference Result 128356 states and 172836 transitions. [2021-11-06 18:18:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:18:22,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-06 18:18:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:23,093 INFO L225 Difference]: With dead ends: 128356 [2021-11-06 18:18:23,093 INFO L226 Difference]: Without dead ends: 85584 [2021-11-06 18:18:23,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:18:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85584 states. [2021-11-06 18:18:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85584 to 45211. [2021-11-06 18:18:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45211 states, 45204 states have (on average 1.3462746659587648) internal successors, (60857), 45210 states have internal predecessors, (60857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45211 states to 45211 states and 60857 transitions. [2021-11-06 18:18:24,376 INFO L78 Accepts]: Start accepts. Automaton has 45211 states and 60857 transitions. Word has length 211 [2021-11-06 18:18:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:24,376 INFO L470 AbstractCegarLoop]: Abstraction has 45211 states and 60857 transitions. [2021-11-06 18:18:24,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 45211 states and 60857 transitions. [2021-11-06 18:18:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-06 18:18:24,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:24,380 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:18:24,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 18:18:24,381 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 18:18:24,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1539296608, now seen corresponding path program 1 times [2021-11-06 18:18:24,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:24,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114531948] [2021-11-06 18:18:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:24,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-06 18:18:24,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:24,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114531948] [2021-11-06 18:18:24,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114531948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:24,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:24,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 18:18:24,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025243454] [2021-11-06 18:18:24,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 18:18:24,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 18:18:24,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 18:18:24,692 INFO L87 Difference]: Start difference. First operand 45211 states and 60857 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)