/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:12:45,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:12:45,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:12:45,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 19:12:45,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:12:45,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:12:45,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:12:45,796 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 19:12:45,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:12:45,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:12:45,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:12:45,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:12:45,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:12:45,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:12:45,822 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:12:45,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:12:45,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:12:45,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:12:45,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:12:45,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:12:45,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:12:45,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:12:45,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:12:45,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:12:45,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:12:45,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:12:45,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:12:45,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:12:45,825 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:12:45,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:12:45,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:12:45,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:12:45,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:12:45,826 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:12:45,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:12:45,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:12:45,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:12:45,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:12:45,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:12:45,997 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:12:45,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_read_write_lock-2.i [2022-01-10 19:12:46,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fcff3eb/88593b23ca5c4e1ca1c89b921163cec0/FLAG792c5e2ee [2022-01-10 19:12:46,496 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:12:46,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_read_write_lock-2.i [2022-01-10 19:12:46,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fcff3eb/88593b23ca5c4e1ca1c89b921163cec0/FLAG792c5e2ee [2022-01-10 19:12:46,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fcff3eb/88593b23ca5c4e1ca1c89b921163cec0 [2022-01-10 19:12:46,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:12:46,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:12:46,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:12:46,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:12:46,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:12:46,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af10c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:46, skipping insertion in model container [2022-01-10 19:12:46,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:12:46" (1/1) ... [2022-01-10 19:12:46,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:12:46,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:12:46,827 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-2.i[23469,23482] [2022-01-10 19:12:46,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:12:46,950 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:12:46,984 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-2.i[23469,23482] [2022-01-10 19:12:47,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:12:47,057 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:12:47,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47 WrapperNode [2022-01-10 19:12:47,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:12:47,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:12:47,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:12:47,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:12:47,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,224 INFO L137 Inliner]: procedures = 150, calls = 299, calls flagged for inlining = 62, calls inlined = 347, statements flattened = 4328 [2022-01-10 19:12:47,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:12:47,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:12:47,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:12:47,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:12:47,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:12:47,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:12:47,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:12:47,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:12:47,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (1/1) ... [2022-01-10 19:12:47,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:12:47,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:12:47,440 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 19:12:47,459 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 19:12:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 19:12:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 19:12:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:12:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 19:12:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 19:12:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 19:12:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 19:12:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 19:12:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 19:12:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 19:12:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:12:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 19:12:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:12:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:12:47,608 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:12:47,609 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:12:47,635 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:47,650 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:47,668 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:47,678 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:47,684 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 19:12:57,607 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-18: 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 19:12:57,607 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-45: 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 19:12:57,607 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-72: 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 19:12:57,607 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-99: 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 19:12:57,607 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L2-126: 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 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1135: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1136: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L560-14: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L560-37: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L560-60: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L560-83: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L560-106: assume { :end_inline___CS_cs } true; [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##409: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##410: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-42: 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 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-42: 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 19:12:57,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-44: ~__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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-111: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-111: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-113: ~__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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-180: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-180: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-182: ~__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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-249: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-249: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-251: ~__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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-318: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-318: 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 19:12:57,609 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L565-320: ~__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 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##652: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##651: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##894: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##893: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-2: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-2: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-4: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-4: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-6: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:57,610 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-6: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:57,611 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-8: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);reader_#res#1.base, reader_#res#1.offset := 0bv64, 0bv64; [2022-01-10 19:12:57,611 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L725-8: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 19:12:57,611 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##168: assume !(0bv32 == assume_abort_if_not_~cond#1); [2022-01-10 19:12:57,611 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##167: assume 0bv32 == assume_abort_if_not_~cond#1;assume false; [2022-01-10 19:12:57,611 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:12:57,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:12:57,767 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:12:57,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:57 BoogieIcfgContainer [2022-01-10 19:12:57,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:12:57,770 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:12:57,770 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:12:57,771 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:12:57,773 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:57" (1/1) ... [2022-01-10 19:12:58,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:12:58 BasicIcfg [2022-01-10 19:12:58,153 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:12:58,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:12:58,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:12:58,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:12:58,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:12:46" (1/4) ... [2022-01-10 19:12:58,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5a20e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:58, skipping insertion in model container [2022-01-10 19:12:58,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:12:47" (2/4) ... [2022-01-10 19:12:58,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5a20e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:12:58, skipping insertion in model container [2022-01-10 19:12:58,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:12:57" (3/4) ... [2022-01-10 19:12:58,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5a20e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:12:58, skipping insertion in model container [2022-01-10 19:12:58,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:12:58" (4/4) ... [2022-01-10 19:12:58,158 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_read_write_lock-2.iTransformedIcfg [2022-01-10 19:12:58,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:12:58,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:12:58,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:12:58,199 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 19:12:58,199 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:12:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 977 states, 975 states have (on average 1.5138461538461538) internal successors, (1476), 976 states have internal predecessors, (1476), 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 19:12:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 19:12:58,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:12:58,237 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] [2022-01-10 19:12:58,238 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:12:58,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:12:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash 663370095, now seen corresponding path program 1 times [2022-01-10 19:12:58,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:12:58,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400759342] [2022-01-10 19:12:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:12:58,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:12:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:12:59,068 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 19:12:59,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:12:59,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400759342] [2022-01-10 19:12:59,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400759342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:12:59,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:12:59,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:12:59,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476200012] [2022-01-10 19:12:59,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:12:59,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 19:12:59,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:12:59,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 19:12:59,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 19:12:59,093 INFO L87 Difference]: Start difference. First operand has 977 states, 975 states have (on average 1.5138461538461538) internal successors, (1476), 976 states have internal predecessors, (1476), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 19:12:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:12:59,298 INFO L93 Difference]: Finished difference Result 1946 states and 2938 transitions. [2022-01-10 19:12:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 19:12:59,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2022-01-10 19:12:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:12:59,329 INFO L225 Difference]: With dead ends: 1946 [2022-01-10 19:12:59,329 INFO L226 Difference]: Without dead ends: 973 [2022-01-10 19:12:59,334 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 19:12:59,337 INFO L933 BasicCegarLoop]: 1321 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:12:59,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1321 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:12:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-01-10 19:12:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2022-01-10 19:12:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 1.3652263374485596) internal successors, (1327), 972 states have internal predecessors, (1327), 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 19:12:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1327 transitions. [2022-01-10 19:12:59,413 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1327 transitions. Word has length 42 [2022-01-10 19:12:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:12:59,413 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1327 transitions. [2022-01-10 19:12:59,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 19:12:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1327 transitions. [2022-01-10 19:12:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 19:12:59,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:12:59,415 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] [2022-01-10 19:12:59,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:12:59,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:12:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:12:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1922922849, now seen corresponding path program 1 times [2022-01-10 19:12:59,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:12:59,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698809092] [2022-01-10 19:12:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:12:59,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:00,381 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 19:13:00,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:00,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698809092] [2022-01-10 19:13:00,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698809092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:00,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:00,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:13:00,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687030776] [2022-01-10 19:13:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:00,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:13:00,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:13:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:13:00,384 INFO L87 Difference]: Start difference. First operand 973 states and 1327 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 19:13:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:00,968 INFO L93 Difference]: Finished difference Result 1808 states and 2466 transitions. [2022-01-10 19:13:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:13:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2022-01-10 19:13:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:00,974 INFO L225 Difference]: With dead ends: 1808 [2022-01-10 19:13:00,974 INFO L226 Difference]: Without dead ends: 1709 [2022-01-10 19:13:00,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:00,976 INFO L933 BasicCegarLoop]: 1646 mSDtfsCounter, 1241 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:00,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 4379 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 19:13:00,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-01-10 19:13:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1705. [2022-01-10 19:13:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.3650234741784038) internal successors, (2326), 1704 states have internal predecessors, (2326), 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 19:13:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2326 transitions. [2022-01-10 19:13:00,998 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2326 transitions. Word has length 42 [2022-01-10 19:13:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:00,998 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 2326 transitions. [2022-01-10 19:13:00,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 19:13:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2326 transitions. [2022-01-10 19:13:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:13:01,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:01,002 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] [2022-01-10 19:13:01,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:13:01,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1608872728, now seen corresponding path program 1 times [2022-01-10 19:13:01,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:01,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314617589] [2022-01-10 19:13:01,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:01,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:01,530 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 19:13:01,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:01,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314617589] [2022-01-10 19:13:01,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314617589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:01,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:01,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:13:01,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895012195] [2022-01-10 19:13:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:01,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:13:01,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:13:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:13:01,533 INFO L87 Difference]: Start difference. First operand 1705 states and 2326 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:03,723 INFO L93 Difference]: Finished difference Result 3509 states and 4728 transitions. [2022-01-10 19:13:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:13:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 19:13:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:03,728 INFO L225 Difference]: With dead ends: 3509 [2022-01-10 19:13:03,729 INFO L226 Difference]: Without dead ends: 1995 [2022-01-10 19:13:03,730 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 19:13:03,731 INFO L933 BasicCegarLoop]: 1374 mSDtfsCounter, 746 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:03,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1668 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 19:13:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2022-01-10 19:13:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1705. [2022-01-10 19:13:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.3550469483568075) internal successors, (2309), 1704 states have internal predecessors, (2309), 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 19:13:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2309 transitions. [2022-01-10 19:13:03,764 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2309 transitions. Word has length 84 [2022-01-10 19:13:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:03,765 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 2309 transitions. [2022-01-10 19:13:03,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2309 transitions. [2022-01-10 19:13:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:13:03,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:03,767 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] [2022-01-10 19:13:03,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:13:03,768 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:03,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1889222617, now seen corresponding path program 1 times [2022-01-10 19:13:03,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:03,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878693873] [2022-01-10 19:13:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:03,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:04,616 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 19:13:04,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:04,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878693873] [2022-01-10 19:13:04,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878693873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:04,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:04,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:04,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524830360] [2022-01-10 19:13:04,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:04,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:04,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:04,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:04,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:04,618 INFO L87 Difference]: Start difference. First operand 1705 states and 2309 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:06,618 INFO L93 Difference]: Finished difference Result 4910 states and 6624 transitions. [2022-01-10 19:13:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 19:13:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:06,637 INFO L225 Difference]: With dead ends: 4910 [2022-01-10 19:13:06,637 INFO L226 Difference]: Without dead ends: 3375 [2022-01-10 19:13:06,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:06,647 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 4880 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4880 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:06,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4880 Valid, 3037 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 19:13:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-01-10 19:13:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 1641. [2022-01-10 19:13:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1640 states have (on average 1.3567073170731707) internal successors, (2225), 1640 states have internal predecessors, (2225), 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 19:13:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2225 transitions. [2022-01-10 19:13:06,691 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2225 transitions. Word has length 84 [2022-01-10 19:13:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:06,692 INFO L470 AbstractCegarLoop]: Abstraction has 1641 states and 2225 transitions. [2022-01-10 19:13:06,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:06,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2225 transitions. [2022-01-10 19:13:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:13:06,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:06,696 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] [2022-01-10 19:13:06,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:13:06,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash -319444283, now seen corresponding path program 1 times [2022-01-10 19:13:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:06,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679078106] [2022-01-10 19:13:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:06,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:07,584 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 19:13:07,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679078106] [2022-01-10 19:13:07,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679078106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:07,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:07,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:07,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025167968] [2022-01-10 19:13:07,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:07,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:07,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:07,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:07,585 INFO L87 Difference]: Start difference. First operand 1641 states and 2225 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:09,613 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 19:13:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:14,036 INFO L93 Difference]: Finished difference Result 4601 states and 6214 transitions. [2022-01-10 19:13:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:14,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 19:13:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:14,045 INFO L225 Difference]: With dead ends: 4601 [2022-01-10 19:13:14,046 INFO L226 Difference]: Without dead ends: 3380 [2022-01-10 19:13:14,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:14,106 INFO L933 BasicCegarLoop]: 1329 mSDtfsCounter, 1490 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 4947 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:14,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 4947 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 347 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 19:13:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2022-01-10 19:13:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 1786. [2022-01-10 19:13:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1785 states have (on average 1.361904761904762) internal successors, (2431), 1785 states have internal predecessors, (2431), 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 19:13:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2431 transitions. [2022-01-10 19:13:14,145 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2431 transitions. Word has length 84 [2022-01-10 19:13:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:14,145 INFO L470 AbstractCegarLoop]: Abstraction has 1786 states and 2431 transitions. [2022-01-10 19:13:14,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2431 transitions. [2022-01-10 19:13:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:13:14,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:14,148 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] [2022-01-10 19:13:14,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:13:14,148 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2036503305, now seen corresponding path program 1 times [2022-01-10 19:13:14,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:14,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600980485] [2022-01-10 19:13:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:14,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:14,868 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 19:13:14,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:14,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600980485] [2022-01-10 19:13:14,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600980485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:14,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:14,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:14,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694003628] [2022-01-10 19:13:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:14,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:14,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:14,870 INFO L87 Difference]: Start difference. First operand 1786 states and 2431 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:16,892 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 19:13:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:20,310 INFO L93 Difference]: Finished difference Result 4093 states and 5524 transitions. [2022-01-10 19:13:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:20,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 19:13:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:20,320 INFO L225 Difference]: With dead ends: 4093 [2022-01-10 19:13:20,320 INFO L226 Difference]: Without dead ends: 3247 [2022-01-10 19:13:20,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:20,322 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 1401 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:20,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1401 Valid, 4710 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 292 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 19:13:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-01-10 19:13:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 2036. [2022-01-10 19:13:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2035 states have (on average 1.3656019656019656) internal successors, (2779), 2035 states have internal predecessors, (2779), 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 19:13:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2779 transitions. [2022-01-10 19:13:20,366 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2779 transitions. Word has length 84 [2022-01-10 19:13:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:20,366 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 2779 transitions. [2022-01-10 19:13:20,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2779 transitions. [2022-01-10 19:13:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:13:20,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:20,369 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] [2022-01-10 19:13:20,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:13:20,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -297553432, now seen corresponding path program 1 times [2022-01-10 19:13:20,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015919653] [2022-01-10 19:13:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:20,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:21,167 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 19:13:21,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:21,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015919653] [2022-01-10 19:13:21,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015919653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:21,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:21,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:21,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080024014] [2022-01-10 19:13:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:21,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:21,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:21,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:21,168 INFO L87 Difference]: Start difference. First operand 2036 states and 2779 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:23,193 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 19:13:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:27,581 INFO L93 Difference]: Finished difference Result 3585 states and 4834 transitions. [2022-01-10 19:13:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:27,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 19:13:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:27,590 INFO L225 Difference]: With dead ends: 3585 [2022-01-10 19:13:27,590 INFO L226 Difference]: Without dead ends: 3114 [2022-01-10 19:13:27,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:27,592 INFO L933 BasicCegarLoop]: 1406 mSDtfsCounter, 1312 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:27,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 5175 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 19:13:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2022-01-10 19:13:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 2286. [2022-01-10 19:13:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2285 states have (on average 1.3684901531728666) internal successors, (3127), 2285 states have internal predecessors, (3127), 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 19:13:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3127 transitions. [2022-01-10 19:13:27,639 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3127 transitions. Word has length 84 [2022-01-10 19:13:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:27,639 INFO L470 AbstractCegarLoop]: Abstraction has 2286 states and 3127 transitions. [2022-01-10 19:13:27,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:27,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3127 transitions. [2022-01-10 19:13:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:13:27,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:27,643 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] [2022-01-10 19:13:27,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:13:27,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2128977691, now seen corresponding path program 1 times [2022-01-10 19:13:27,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:27,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330435380] [2022-01-10 19:13:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:27,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:28,408 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 19:13:28,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:28,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330435380] [2022-01-10 19:13:28,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330435380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:28,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:28,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:28,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669902509] [2022-01-10 19:13:28,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:28,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:28,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:28,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:28,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:28,410 INFO L87 Difference]: Start difference. First operand 2286 states and 3127 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:30,431 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 19:13:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:34,822 INFO L93 Difference]: Finished difference Result 3128 states and 4221 transitions. [2022-01-10 19:13:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 19:13:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:34,831 INFO L225 Difference]: With dead ends: 3128 [2022-01-10 19:13:34,831 INFO L226 Difference]: Without dead ends: 2994 [2022-01-10 19:13:34,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:34,833 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 1223 mSDsluCounter, 3723 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 5101 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:34,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 5101 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-01-10 19:13:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2022-01-10 19:13:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2535. [2022-01-10 19:13:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2535 states, 2534 states have (on average 1.3701657458563536) internal successors, (3472), 2534 states have internal predecessors, (3472), 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 19:13:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3472 transitions. [2022-01-10 19:13:34,882 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3472 transitions. Word has length 84 [2022-01-10 19:13:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:34,882 INFO L470 AbstractCegarLoop]: Abstraction has 2535 states and 3472 transitions. [2022-01-10 19:13:34,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:13:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3472 transitions. [2022-01-10 19:13:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 19:13:34,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:34,886 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, 1, 1, 1, 1] [2022-01-10 19:13:34,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:13:34,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1820774058, now seen corresponding path program 1 times [2022-01-10 19:13:34,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:34,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813160375] [2022-01-10 19:13:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:34,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:35,353 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 19:13:35,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:35,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813160375] [2022-01-10 19:13:35,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813160375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:35,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:35,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:13:35,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035732153] [2022-01-10 19:13:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:35,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:13:35,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:13:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:13:35,355 INFO L87 Difference]: Start difference. First operand 2535 states and 3472 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 19:13:37,395 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 19:13:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:39,746 INFO L93 Difference]: Finished difference Result 4269 states and 5819 transitions. [2022-01-10 19:13:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:13:39,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 19:13:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:39,752 INFO L225 Difference]: With dead ends: 4269 [2022-01-10 19:13:39,752 INFO L226 Difference]: Without dead ends: 1781 [2022-01-10 19:13:39,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:39,767 INFO L933 BasicCegarLoop]: 1218 mSDtfsCounter, 217 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:39,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 3404 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 19:13:39,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-10 19:13:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1781. [2022-01-10 19:13:39,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 1.351123595505618) internal successors, (2405), 1780 states have internal predecessors, (2405), 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 19:13:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2405 transitions. [2022-01-10 19:13:39,816 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2405 transitions. Word has length 93 [2022-01-10 19:13:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:39,816 INFO L470 AbstractCegarLoop]: Abstraction has 1781 states and 2405 transitions. [2022-01-10 19:13:39,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 19:13:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2405 transitions. [2022-01-10 19:13:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 19:13:39,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:39,820 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, 1, 1, 1, 1] [2022-01-10 19:13:39,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:13:39,820 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:39,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash 335718507, now seen corresponding path program 1 times [2022-01-10 19:13:39,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:39,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194823376] [2022-01-10 19:13:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:39,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:40,224 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 19:13:40,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:40,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194823376] [2022-01-10 19:13:40,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194823376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:40,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:40,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:13:40,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699954215] [2022-01-10 19:13:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:40,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:13:40,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:13:40,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:13:40,226 INFO L87 Difference]: Start difference. First operand 1781 states and 2405 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 19:13:42,244 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 19:13:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:43,403 INFO L93 Difference]: Finished difference Result 4961 states and 6718 transitions. [2022-01-10 19:13:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:13:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-01-10 19:13:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:43,413 INFO L225 Difference]: With dead ends: 4961 [2022-01-10 19:13:43,413 INFO L226 Difference]: Without dead ends: 3375 [2022-01-10 19:13:43,414 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 19:13:43,415 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 1138 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:43,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 2895 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 64 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-01-10 19:13:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-01-10 19:13:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3103. [2022-01-10 19:13:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 3102 states have (on average 1.3488072211476467) internal successors, (4184), 3102 states have internal predecessors, (4184), 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 19:13:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4184 transitions. [2022-01-10 19:13:43,515 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4184 transitions. Word has length 93 [2022-01-10 19:13:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:43,515 INFO L470 AbstractCegarLoop]: Abstraction has 3103 states and 4184 transitions. [2022-01-10 19:13:43,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 19:13:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4184 transitions. [2022-01-10 19:13:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 19:13:43,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:43,521 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, 1, 1, 1, 1] [2022-01-10 19:13:43,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:13:43,522 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:43,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash 943795370, now seen corresponding path program 1 times [2022-01-10 19:13:43,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:43,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543097280] [2022-01-10 19:13:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:43,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:13:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:13:44,174 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 19:13:44,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:13:44,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543097280] [2022-01-10 19:13:44,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543097280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:13:44,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:13:44,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:13:44,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684837483] [2022-01-10 19:13:44,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:13:44,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:13:44,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:13:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:13:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:13:44,176 INFO L87 Difference]: Start difference. First operand 3103 states and 4184 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 19:13:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:13:49,153 INFO L93 Difference]: Finished difference Result 7768 states and 10363 transitions. [2022-01-10 19:13:49,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:13:49,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 93 [2022-01-10 19:13:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:13:49,160 INFO L225 Difference]: With dead ends: 7768 [2022-01-10 19:13:49,160 INFO L226 Difference]: Without dead ends: 4614 [2022-01-10 19:13:49,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 19:13:49,163 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 1747 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 19:13:49,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 2369 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 19:13:49,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2022-01-10 19:13:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4354. [2022-01-10 19:13:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 4353 states have (on average 1.2589019067309901) internal successors, (5480), 4353 states have internal predecessors, (5480), 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 19:13:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 5480 transitions. [2022-01-10 19:13:49,263 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 5480 transitions. Word has length 93 [2022-01-10 19:13:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:13:49,263 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 5480 transitions. [2022-01-10 19:13:49,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 19:13:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 5480 transitions. [2022-01-10 19:13:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 19:13:49,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:13:49,268 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, 1, 1, 1, 1] [2022-01-10 19:13:49,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:13:49,269 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:13:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:13:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1495807314, now seen corresponding path program 1 times [2022-01-10 19:13:49,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:13:49,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114197078] [2022-01-10 19:13:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:13:49,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms