/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-pthread/cs_read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:12:44,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:12:44,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:12:44,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 19:12:44,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:12:45,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:12:45,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:12:45,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:12:45,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:12:45,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:12:45,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:12:45,021 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:12:45,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:12:45,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:12:45,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:12:45,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:12:45,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:12:45,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:12:45,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:12:45,022 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:12:45,022 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:12:45,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:12:45,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:12:45,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:12:45,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:12:45,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:12:45,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:12:45,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:12:45,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:12:45,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:12:45,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:12:45,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:12:45,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:12:45,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:12:45,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:12:45,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:12:45,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:12:45,026 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:12:45,026 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:12:45,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:12:45,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:12:45,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:12:45,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:12:45,204 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:12:45,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_read_write_lock-1.i [2022-01-10 19:12:45,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391077bf5/5190a055064b44418ffabb91bdb57ca3/FLAG766687036 [2022-01-10 19:12:45,695 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:12:45,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_read_write_lock-1.i [2022-01-10 19:12:45,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391077bf5/5190a055064b44418ffabb91bdb57ca3/FLAG766687036 [2022-01-10 19:12:45,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391077bf5/5190a055064b44418ffabb91bdb57ca3 [2022-01-10 19:12:45,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:12:45,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:12:45,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:12:45,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:12:45,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:12:45,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:45" (1/1) ... [2022-01-10 19:12:45,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af787d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:45, skipping insertion in model container [2022-01-10 19:12:45,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:45" (1/1) ... [2022-01-10 19:12:45,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:12:45,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:12:46,042 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_read_write_lock-1.i[23614,23627] [2022-01-10 19:12:46,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:12:46,140 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:12:46,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_read_write_lock-1.i[23614,23627] [2022-01-10 19:12:46,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:12:46,232 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:12:46,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46 WrapperNode [2022-01-10 19:12:46,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:12:46,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:12:46,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:12:46,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:12:46,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,355 INFO L137 Inliner]: procedures = 152, calls = 309, calls flagged for inlining = 62, calls inlined = 342, statements flattened = 4318 [2022-01-10 19:12:46,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:12:46,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:12:46,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:12:46,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:12:46,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:12:46,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:12:46,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:12:46,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:12:46,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:12:46,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:12:46,529 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) [2022-01-10 19:12:46,584 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 [2022-01-10 19:12:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 19:12:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 19:12:46,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 19:12:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:12:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:12:46,713 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:12:46,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:12:46,736 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:46,761 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:46,771 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:46,780 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:46,787 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:53,753 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-18: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~bvadd32(~zero_extendFrom8To32(~__CS_round~0), ~zero_extendFrom8To32(__CS_cs_~k~0#1))[8:0]; [2022-01-10 19:12:53,753 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-44: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~bvadd32(~zero_extendFrom8To32(~__CS_round~0), ~zero_extendFrom8To32(__CS_cs_~k~0#1))[8:0]; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-70: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~bvadd32(~zero_extendFrom8To32(~__CS_round~0), ~zero_extendFrom8To32(__CS_cs_~k~0#1))[8:0]; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-96: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~bvadd32(~zero_extendFrom8To32(~__CS_round~0), ~zero_extendFrom8To32(__CS_cs_~k~0#1))[8:0]; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-122: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~bvadd32(~zero_extendFrom8To32(~__CS_round~0), ~zero_extendFrom8To32(__CS_cs_~k~0#1))[8:0]; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1114: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1115: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-14: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-36: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-58: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##412: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:53,754 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-80: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##413: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-102: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-42: assume 0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0);__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret_PREEMPTED~0); [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-42: assume !(0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0));__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-44: ~__CS_ret~0 := __CS_cs_#t~ite5#1[8:0];havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-108: assume 0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0);__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret_PREEMPTED~0); [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-108: assume !(0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0));__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-110: ~__CS_ret~0 := __CS_cs_#t~ite5#1[8:0];havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-174: assume 0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0);__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret_PREEMPTED~0); [2022-01-10 19:12:53,755 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-174: assume !(0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0));__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-176: ~__CS_ret~0 := __CS_cs_#t~ite5#1[8:0];havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-240: assume 0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0);__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret_PREEMPTED~0); [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-240: assume !(0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0));__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-242: ~__CS_ret~0 := __CS_cs_#t~ite5#1[8:0];havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-306: assume 0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0);__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret_PREEMPTED~0); [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-306: assume !(0bv32 != __CS_cs_#t~nondet4#1 && 1bv32 == ~zero_extendFrom8To32(~__CS_round~0));__CS_cs_#t~ite5#1 := ~zero_extendFrom8To32(~__CS_ret~0); [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-308: ~__CS_ret~0 := __CS_cs_#t~ite5#1[8:0];havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##647: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##646: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:53,756 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##881: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:53,757 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##880: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:53,757 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:53,757 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:53,757 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-2: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:53,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-2: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:53,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-4: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:53,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:53,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-6: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:53,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-6: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:53,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-8: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:53,758 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L733-8: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:53,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##179: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:53,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##178: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:53,759 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:12:53,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:12:53,957 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 19:12:53,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:53 BoogieIcfgContainer [2022-01-10 19:12:53,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:12:53,960 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:12:53,961 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:12:53,961 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:12:53,963 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:53" (1/1) ... [2022-01-10 19:12:54,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:12:54 BasicIcfg [2022-01-10 19:12:54,418 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:12:54,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:12:54,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:12:54,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:12:54,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:12:45" (1/4) ... [2022-01-10 19:12:54,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54675b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:54, skipping insertion in model container [2022-01-10 19:12:54,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46" (2/4) ... [2022-01-10 19:12:54,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54675b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:54, skipping insertion in model container [2022-01-10 19:12:54,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:53" (3/4) ... [2022-01-10 19:12:54,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54675b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:12:54, skipping insertion in model container [2022-01-10 19:12:54,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:12:54" (4/4) ... [2022-01-10 19:12:54,427 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_read_write_lock-1.iTransformedIcfg [2022-01-10 19:12:54,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:12:54,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:12:54,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:12:54,493 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 [2022-01-10 19:12:54,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:12:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 950 states have (on average 1.5105263157894737) internal successors, (1435), 951 states have internal predecessors, (1435), 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) [2022-01-10 19:12:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 19:12:54,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:12:54,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:12:54,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:12:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:12:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash 968335636, now seen corresponding path program 1 times [2022-01-10 19:12:54,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:12:54,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799753691] [2022-01-10 19:12:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:12:54,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:12:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:12:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:12:55,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:12:55,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799753691] [2022-01-10 19:12:55,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799753691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:12:55,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:12:55,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:12:55,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704283016] [2022-01-10 19:12:55,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:12:55,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 19:12:55,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:12:55,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 19:12:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 19:12:55,061 INFO L87 Difference]: Start difference. First operand has 952 states, 950 states have (on average 1.5105263157894737) internal successors, (1435), 951 states have internal predecessors, (1435), 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 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2022-01-10 19:12:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:12:55,293 INFO L93 Difference]: Finished difference Result 1902 states and 2868 transitions. [2022-01-10 19:12:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 19:12:55,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2022-01-10 19:12:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:12:55,307 INFO L225 Difference]: With dead ends: 1902 [2022-01-10 19:12:55,308 INFO L226 Difference]: Without dead ends: 948 [2022-01-10 19:12:55,312 INFO L932 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 [2022-01-10 19:12:55,314 INFO L933 BasicCegarLoop]: 1278 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:12:55,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1278 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 19:12:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-01-10 19:12:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 948. [2022-01-10 19:12:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 947 states have (on average 1.3611404435058079) internal successors, (1289), 947 states have internal predecessors, (1289), 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) [2022-01-10 19:12:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1289 transitions. [2022-01-10 19:12:55,359 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1289 transitions. Word has length 44 [2022-01-10 19:12:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:12:55,360 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1289 transitions. [2022-01-10 19:12:55,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2022-01-10 19:12:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1289 transitions. [2022-01-10 19:12:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 19:12:55,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:12:55,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:12:55,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:12:55,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:12:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:12:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1943005659, now seen corresponding path program 1 times [2022-01-10 19:12:55,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:12:55,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891796942] [2022-01-10 19:12:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:12:55,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:12:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:12:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:12:56,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:12:56,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891796942] [2022-01-10 19:12:56,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891796942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:12:56,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:12:56,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:12:56,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438610665] [2022-01-10 19:12:56,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:12:56,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:12:56,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:12:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:12:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:12:56,403 INFO L87 Difference]: Start difference. First operand 948 states and 1289 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-01-10 19:12:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:12:56,879 INFO L93 Difference]: Finished difference Result 1759 states and 2392 transitions. [2022-01-10 19:12:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:12:56,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-01-10 19:12:56,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:12:56,884 INFO L225 Difference]: With dead ends: 1759 [2022-01-10 19:12:56,884 INFO L226 Difference]: Without dead ends: 1666 [2022-01-10 19:12:56,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:12:56,886 INFO L933 BasicCegarLoop]: 1603 mSDtfsCounter, 1201 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 19:12:56,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 4253 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 19:12:56,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-01-10 19:12:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1662. [2022-01-10 19:12:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.3612281757977123) internal successors, (2261), 1661 states have internal predecessors, (2261), 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) [2022-01-10 19:12:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2261 transitions. [2022-01-10 19:12:56,915 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2261 transitions. Word has length 44 [2022-01-10 19:12:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:12:56,915 INFO L470 AbstractCegarLoop]: Abstraction has 1662 states and 2261 transitions. [2022-01-10 19:12:56,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-01-10 19:12:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2261 transitions. [2022-01-10 19:12:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 19:12:56,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:12:56,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:12:56,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:12:56,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:12:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:12:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash -257182532, now seen corresponding path program 1 times [2022-01-10 19:12:56,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:12:56,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584867143] [2022-01-10 19:12:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:12:56,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:12:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:12:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:12:57,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:12:57,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584867143] [2022-01-10 19:12:57,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584867143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:12:57,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:12:57,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:12:57,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87643078] [2022-01-10 19:12:57,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:12:57,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:12:57,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:12:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:12:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:12:57,473 INFO L87 Difference]: Start difference. First operand 1662 states and 2261 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:12:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:12:58,656 INFO L93 Difference]: Finished difference Result 3418 states and 4591 transitions. [2022-01-10 19:12:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:12:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 19:12:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:12:58,662 INFO L225 Difference]: With dead ends: 3418 [2022-01-10 19:12:58,662 INFO L226 Difference]: Without dead ends: 1952 [2022-01-10 19:12:58,666 INFO L932 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 [2022-01-10 19:12:58,668 INFO L933 BasicCegarLoop]: 1346 mSDtfsCounter, 733 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:12:58,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1635 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 19:12:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2022-01-10 19:12:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1662. [2022-01-10 19:12:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.3558097531607465) internal successors, (2252), 1661 states have internal predecessors, (2252), 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) [2022-01-10 19:12:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2252 transitions. [2022-01-10 19:12:58,694 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2252 transitions. Word has length 86 [2022-01-10 19:12:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:12:58,694 INFO L470 AbstractCegarLoop]: Abstraction has 1662 states and 2252 transitions. [2022-01-10 19:12:58,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:12:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2252 transitions. [2022-01-10 19:12:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 19:12:58,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:12:58,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:12:58,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:12:58,699 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:12:58,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:12:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash 23167357, now seen corresponding path program 1 times [2022-01-10 19:12:58,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:12:58,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793246105] [2022-01-10 19:12:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:12:58,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:12:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:12:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:12:59,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:12:59,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793246105] [2022-01-10 19:12:59,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793246105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:12:59,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:12:59,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:12:59,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759768922] [2022-01-10 19:12:59,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:12:59,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:12:59,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:12:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:12:59,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:12:59,445 INFO L87 Difference]: Start difference. First operand 1662 states and 2252 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:01,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:01,137 INFO L93 Difference]: Finished difference Result 4783 states and 6455 transitions. [2022-01-10 19:13:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 19:13:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:01,146 INFO L225 Difference]: With dead ends: 4783 [2022-01-10 19:13:01,147 INFO L226 Difference]: Without dead ends: 3296 [2022-01-10 19:13:01,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:01,149 INFO L933 BasicCegarLoop]: 1419 mSDtfsCounter, 3426 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:01,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3426 Valid, 3030 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 19:13:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2022-01-10 19:13:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 1604. [2022-01-10 19:13:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.357454772301934) internal successors, (2176), 1603 states have internal predecessors, (2176), 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) [2022-01-10 19:13:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2176 transitions. [2022-01-10 19:13:01,180 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2176 transitions. Word has length 86 [2022-01-10 19:13:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:01,180 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 2176 transitions. [2022-01-10 19:13:01,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2176 transitions. [2022-01-10 19:13:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 19:13:01,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:01,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:01,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:13:01,182 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:01,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash 942771434, now seen corresponding path program 1 times [2022-01-10 19:13:01,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:01,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679325879] [2022-01-10 19:13:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:01,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:01,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:13:01,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:01,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679325879] [2022-01-10 19:13:01,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679325879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:01,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:01,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:01,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231761844] [2022-01-10 19:13:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:01,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:01,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:01,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:01,842 INFO L87 Difference]: Start difference. First operand 1604 states and 2176 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:03,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 19:13:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:06,828 INFO L93 Difference]: Finished difference Result 4531 states and 6122 transitions. [2022-01-10 19:13:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 19:13:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:06,838 INFO L225 Difference]: With dead ends: 4531 [2022-01-10 19:13:06,838 INFO L226 Difference]: Without dead ends: 3352 [2022-01-10 19:13:06,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:06,841 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 1474 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:06,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 4943 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 324 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-01-10 19:13:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2022-01-10 19:13:06,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 1788. [2022-01-10 19:13:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 1.3626189143816452) internal successors, (2435), 1787 states have internal predecessors, (2435), 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) [2022-01-10 19:13:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2435 transitions. [2022-01-10 19:13:06,921 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2435 transitions. Word has length 86 [2022-01-10 19:13:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:06,921 INFO L470 AbstractCegarLoop]: Abstraction has 1788 states and 2435 transitions. [2022-01-10 19:13:06,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2435 transitions. [2022-01-10 19:13:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 19:13:06,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:06,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:06,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:13:06,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1696802460, now seen corresponding path program 1 times [2022-01-10 19:13:06,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:06,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199744856] [2022-01-10 19:13:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:06,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:13:07,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:07,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199744856] [2022-01-10 19:13:07,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199744856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:07,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:07,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:07,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008572378] [2022-01-10 19:13:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:07,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:07,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:07,575 INFO L87 Difference]: Start difference. First operand 1788 states and 2435 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:09,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 19:13:12,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:12,369 INFO L93 Difference]: Finished difference Result 4047 states and 5464 transitions. [2022-01-10 19:13:12,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:12,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 19:13:12,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:12,383 INFO L225 Difference]: With dead ends: 4047 [2022-01-10 19:13:12,383 INFO L226 Difference]: Without dead ends: 3231 [2022-01-10 19:13:12,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:12,385 INFO L933 BasicCegarLoop]: 1405 mSDtfsCounter, 1393 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:12,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 4868 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 314 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-01-10 19:13:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2022-01-10 19:13:12,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 2038. [2022-01-10 19:13:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 1.3662248404516446) internal successors, (2783), 2037 states have internal predecessors, (2783), 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) [2022-01-10 19:13:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 2783 transitions. [2022-01-10 19:13:12,539 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 2783 transitions. Word has length 86 [2022-01-10 19:13:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:12,539 INFO L470 AbstractCegarLoop]: Abstraction has 2038 states and 2783 transitions. [2022-01-10 19:13:12,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 2783 transitions. [2022-01-10 19:13:12,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 19:13:12,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:12,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:12,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:13:12,558 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:12,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash 948983915, now seen corresponding path program 1 times [2022-01-10 19:13:12,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:12,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645737203] [2022-01-10 19:13:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:12,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:13:13,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:13,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645737203] [2022-01-10 19:13:13,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645737203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:13,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:13,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:13,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593840775] [2022-01-10 19:13:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:13,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:13,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:13,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:13,169 INFO L87 Difference]: Start difference. First operand 2038 states and 2783 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:15,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 19:13:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:18,598 INFO L93 Difference]: Finished difference Result 3237 states and 4366 transitions. [2022-01-10 19:13:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 19:13:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:18,607 INFO L225 Difference]: With dead ends: 3237 [2022-01-10 19:13:18,607 INFO L226 Difference]: Without dead ends: 3109 [2022-01-10 19:13:18,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:18,609 INFO L933 BasicCegarLoop]: 1440 mSDtfsCounter, 1175 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 5133 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:18,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 5133 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 383 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 19:13:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2022-01-10 19:13:18,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2650. [2022-01-10 19:13:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2649 states have (on average 1.3684409211023028) internal successors, (3625), 2649 states have internal predecessors, (3625), 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) [2022-01-10 19:13:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3625 transitions. [2022-01-10 19:13:18,672 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3625 transitions. Word has length 86 [2022-01-10 19:13:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:18,672 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 3625 transitions. [2022-01-10 19:13:18,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3625 transitions. [2022-01-10 19:13:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 19:13:18,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:18,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:18,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:13:18,676 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 490795246, now seen corresponding path program 1 times [2022-01-10 19:13:18,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:18,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116024832] [2022-01-10 19:13:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:18,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:13:19,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:19,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116024832] [2022-01-10 19:13:19,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116024832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:19,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:19,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:19,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668260288] [2022-01-10 19:13:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:19,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:19,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:19,216 INFO L87 Difference]: Start difference. First operand 2650 states and 3625 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:21,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 19:13:24,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:24,817 INFO L93 Difference]: Finished difference Result 3377 states and 4572 transitions. [2022-01-10 19:13:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 19:13:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:24,857 INFO L225 Difference]: With dead ends: 3377 [2022-01-10 19:13:24,857 INFO L226 Difference]: Without dead ends: 3017 [2022-01-10 19:13:24,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:24,859 INFO L933 BasicCegarLoop]: 1510 mSDtfsCounter, 1100 mSDsluCounter, 3845 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:24,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 5328 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 403 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 19:13:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-01-10 19:13:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2537. [2022-01-10 19:13:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2536 states have (on average 1.3706624605678233) internal successors, (3476), 2536 states have internal predecessors, (3476), 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) [2022-01-10 19:13:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3476 transitions. [2022-01-10 19:13:24,907 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3476 transitions. Word has length 86 [2022-01-10 19:13:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:24,908 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3476 transitions. [2022-01-10 19:13:24,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3476 transitions. [2022-01-10 19:13:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 19:13:24,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:24,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:24,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:13:24,912 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 985415021, now seen corresponding path program 1 times [2022-01-10 19:13:24,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:24,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092750690] [2022-01-10 19:13:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:24,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:13:25,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:25,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092750690] [2022-01-10 19:13:25,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092750690] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 19:13:25,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727933470] [2022-01-10 19:13:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:25,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 19:13:25,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:13:25,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 19:13:25,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 19:13:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:26,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 3756 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 19:13:26,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 19:13:26,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2022-01-10 19:13:26,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-01-10 19:13:26,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 19:13:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 19:13:27,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 19:13:27,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727933470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:27,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 19:13:27,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-01-10 19:13:27,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494648306] [2022-01-10 19:13:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:27,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:27,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:13:27,073 INFO L87 Difference]: Start difference. First operand 2537 states and 3476 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:29,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 19:13:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:33,507 INFO L93 Difference]: Finished difference Result 6405 states and 8671 transitions. [2022-01-10 19:13:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 19:13:33,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 19:13:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:33,518 INFO L225 Difference]: With dead ends: 6405 [2022-01-10 19:13:33,518 INFO L226 Difference]: Without dead ends: 4258 [2022-01-10 19:13:33,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-01-10 19:13:33,522 INFO L933 BasicCegarLoop]: 2244 mSDtfsCounter, 3326 mSDsluCounter, 5318 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3326 SdHoareTripleChecker+Valid, 7516 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:33,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3326 Valid, 7516 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 19:13:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2022-01-10 19:13:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 2682. [2022-01-10 19:13:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2681 states have (on average 1.3733681462140992) internal successors, (3682), 2681 states have internal predecessors, (3682), 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) [2022-01-10 19:13:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 3682 transitions. [2022-01-10 19:13:33,591 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 3682 transitions. Word has length 89 [2022-01-10 19:13:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:33,591 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 3682 transitions. [2022-01-10 19:13:33,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 3682 transitions. [2022-01-10 19:13:33,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 19:13:33,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:33,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:33,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 19:13:33,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 19:13:33,816 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:33,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1739446047, now seen corresponding path program 1 times [2022-01-10 19:13:33,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:33,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128931161] [2022-01-10 19:13:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:33,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:13:34,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128931161] [2022-01-10 19:13:34,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128931161] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 19:13:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088668314] [2022-01-10 19:13:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:34,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 19:13:34,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:13:34,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 19:13:34,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 19:13:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:35,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 3756 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 19:13:35,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 19:13:35,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2022-01-10 19:13:35,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-01-10 19:13:35,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 19:13:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 19:13:36,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 19:13:36,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088668314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:36,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 19:13:36,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-01-10 19:13:36,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474567943] [2022-01-10 19:13:36,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:36,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:36,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:13:36,164 INFO L87 Difference]: Start difference. First operand 2682 states and 3682 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:38,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 19:13:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:42,029 INFO L93 Difference]: Finished difference Result 5534 states and 7483 transitions. [2022-01-10 19:13:42,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 19:13:42,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 19:13:42,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:42,041 INFO L225 Difference]: With dead ends: 5534 [2022-01-10 19:13:42,041 INFO L226 Difference]: Without dead ends: 4133 [2022-01-10 19:13:42,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-10 19:13:42,047 INFO L933 BasicCegarLoop]: 1997 mSDtfsCounter, 2599 mSDsluCounter, 4898 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:42,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2599 Valid, 6853 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-01-10 19:13:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2022-01-10 19:13:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 2932. [2022-01-10 19:13:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2931 states have (on average 1.3749573524394405) internal successors, (4030), 2931 states have internal predecessors, (4030), 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) [2022-01-10 19:13:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 4030 transitions. [2022-01-10 19:13:42,149 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 4030 transitions. Word has length 89 [2022-01-10 19:13:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:42,149 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 4030 transitions. [2022-01-10 19:13:42,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 4030 transitions. [2022-01-10 19:13:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 19:13:42,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:42,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:42,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 19:13:42,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 19:13:42,371 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:42,371 INFO L85 PathProgramCache]: Analyzing trace with hash 991627502, now seen corresponding path program 1 times [2022-01-10 19:13:42,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:42,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175570633] [2022-01-10 19:13:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:42,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:13:42,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:42,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175570633] [2022-01-10 19:13:42,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175570633] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 19:13:42,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692086532] [2022-01-10 19:13:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:42,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 19:13:42,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:13:42,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 19:13:42,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 19:13:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:44,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 3756 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 19:13:44,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 19:13:44,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2022-01-10 19:13:44,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-01-10 19:13:44,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 19:13:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 19:13:44,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 19:13:44,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692086532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:44,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 19:13:44,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-01-10 19:13:44,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598195451] [2022-01-10 19:13:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:44,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:44,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:13:44,644 INFO L87 Difference]: Start difference. First operand 2932 states and 4030 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:46,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 19:13:49,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:49,635 INFO L93 Difference]: Finished difference Result 4131 states and 5613 transitions. [2022-01-10 19:13:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:49,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 19:13:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:49,645 INFO L225 Difference]: With dead ends: 4131 [2022-01-10 19:13:49,645 INFO L226 Difference]: Without dead ends: 4003 [2022-01-10 19:13:49,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 19:13:49,647 INFO L933 BasicCegarLoop]: 1372 mSDtfsCounter, 1425 mSDsluCounter, 3883 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 5217 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:49,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 5217 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 19:13:49,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2022-01-10 19:13:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 3295. [2022-01-10 19:13:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3294 states have (on average 1.3743169398907105) internal successors, (4527), 3294 states have internal predecessors, (4527), 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) [2022-01-10 19:13:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 4527 transitions. [2022-01-10 19:13:49,729 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 4527 transitions. Word has length 89 [2022-01-10 19:13:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:49,729 INFO L470 AbstractCegarLoop]: Abstraction has 3295 states and 4527 transitions. [2022-01-10 19:13:49,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 4527 transitions. [2022-01-10 19:13:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 19:13:49,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:49,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:13:49,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 19:13:49,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 19:13:49,947 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash 533438833, now seen corresponding path program 1 times [2022-01-10 19:13:49,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:49,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5361194] [2022-01-10 19:13:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:49,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms