/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-pthread/cs_stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:49:47,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:49:47,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:49:47,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:49:47,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:49:47,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:49:47,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:49:47,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:49:47,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:49:47,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:49:47,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:49:47,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:49:47,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:49:47,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:49:47,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:49:47,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:49:47,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:49:47,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:49:47,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:49:47,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:49:47,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:49:47,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:49:47,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:49:47,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:49:47,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:49:47,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:49:47,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:49:47,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:49:47,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:49:47,906 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:49:47,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:49:47,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:49:47,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:49:47,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:49:47,907 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:49:47,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:49:47,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:49:47,908 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:49:47,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:49:47,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:49:47,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:49:47,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:49:47,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:49:47,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:49:47,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:49:47,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:49:47,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:49:47,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:49:47,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:49:47,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:49:47,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:49:47,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:49:47,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:49:47,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:49:47,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:49:47,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:49:47,911 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:49:47,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:49:47,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:49:47,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:49:48,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:49:48,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:49:48,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:49:48,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:49:48,103 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:49:48,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_stack-2.i [2022-01-10 01:49:48,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7c74ab6/894ef59aca3f481986532ed97e98417e/FLAGd19276f37 [2022-01-10 01:49:48,555 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:49:48,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_stack-2.i [2022-01-10 01:49:48,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7c74ab6/894ef59aca3f481986532ed97e98417e/FLAGd19276f37 [2022-01-10 01:49:48,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7c74ab6/894ef59aca3f481986532ed97e98417e [2022-01-10 01:49:48,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:49:48,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:49:48,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:49:48,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:49:48,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:49:48,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:49:48" (1/1) ... [2022-01-10 01:49:48,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb67fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:48, skipping insertion in model container [2022-01-10 01:49:48,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:49:48" (1/1) ... [2022-01-10 01:49:48,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:49:48,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:49:48,919 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_stack-2.i[34556,34569] [2022-01-10 01:49:48,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:49:49,013 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:49:49,034 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_stack-2.i[34556,34569] [2022-01-10 01:49:49,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:49:49,114 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:49:49,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49 WrapperNode [2022-01-10 01:49:49,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:49:49,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:49:49,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:49:49,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:49:49,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,214 INFO L137 Inliner]: procedures = 252, calls = 290, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 640 [2022-01-10 01:49:49,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:49:49,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:49:49,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:49:49,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:49:49,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:49:49,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:49:49,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:49:49,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:49:49,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (1/1) ... [2022-01-10 01:49:49,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:49:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:49:49,318 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 01:49:49,343 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 01:49:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-10 01:49:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-01-10 01:49:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-01-10 01:49:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-10 01:49:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-01-10 01:49:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-01-10 01:49:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:49:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 01:49:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-01-10 01:49:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-01-10 01:49:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-01-10 01:49:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-01-10 01:49:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 01:49:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 01:49:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 01:49:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 01:49:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-01-10 01:49:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-01-10 01:49:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:49:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:49:49,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:49:49,506 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:49:49,508 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:49:49,557 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,557 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-01-10 01:49:49,581 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0 != ~__CS_ret~0 % 256; [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2022-01-10 01:49:49,582 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 01:49:49,817 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,817 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-01-10 01:49:49,817 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,817 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-4: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-01-10 01:49:49,818 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2022-01-10 01:49:52,134 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:49:52,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:49:52,141 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 01:49:52,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:49:52 BoogieIcfgContainer [2022-01-10 01:49:52,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:49:52,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:49:52,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:49:52,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:49:52,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:49:48" (1/3) ... [2022-01-10 01:49:52,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60788c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:49:52, skipping insertion in model container [2022-01-10 01:49:52,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:49:49" (2/3) ... [2022-01-10 01:49:52,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60788c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:49:52, skipping insertion in model container [2022-01-10 01:49:52,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:49:52" (3/3) ... [2022-01-10 01:49:52,149 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2022-01-10 01:49:52,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:49:52,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:49:52,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:49:52,188 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 01:49:52,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:49:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-10 01:49:52,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 01:49:52,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:49:52,216 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:52,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:49:52,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:49:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1676979695, now seen corresponding path program 1 times [2022-01-10 01:49:52,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:49:52,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423280015] [2022-01-10 01:49:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:49:52,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:49:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:49:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:49:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 01:49:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 01:49:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-10 01:49:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-10 01:49:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-10 01:49:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:49:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-10 01:49:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:49:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:49:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-10 01:49:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:49:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:49:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:49:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 01:49:58,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:49:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423280015] [2022-01-10 01:49:58,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423280015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:49:58,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:49:58,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:49:58,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079064755] [2022-01-10 01:49:58,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:49:58,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:49:58,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:49:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:49:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:49:58,736 INFO L87 Difference]: Start difference. First operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 01:49:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:49:58,772 INFO L93 Difference]: Finished difference Result 440 states and 775 transitions. [2022-01-10 01:49:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:49:58,774 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2022-01-10 01:49:58,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:49:58,784 INFO L225 Difference]: With dead ends: 440 [2022-01-10 01:49:58,784 INFO L226 Difference]: Without dead ends: 218 [2022-01-10 01:49:58,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 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 01:49:58,796 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:49:58,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:49:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-10 01:49:58,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-01-10 01:49:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 133 states have (on average 1.4887218045112782) internal successors, (198), 135 states have internal predecessors, (198), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-01-10 01:49:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 348 transitions. [2022-01-10 01:49:58,848 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 348 transitions. Word has length 94 [2022-01-10 01:49:58,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:49:58,849 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 348 transitions. [2022-01-10 01:49:58,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-01-10 01:49:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 348 transitions. [2022-01-10 01:49:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 01:49:58,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:49:58,858 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:58,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:49:58,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:49:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:49:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1062498259, now seen corresponding path program 1 times [2022-01-10 01:49:58,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:49:58,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826049990] [2022-01-10 01:49:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:49:58,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:50:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 01:50:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:50:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 01:50:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-10 01:50:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-01-10 01:50:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-01-10 01:50:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-01-10 01:50:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:50:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-01-10 01:50:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:50:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:50:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-10 01:50:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:50:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:50:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 01:50:10,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:50:10,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826049990] [2022-01-10 01:50:10,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826049990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:50:10,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:50:10,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:50:10,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796847539] [2022-01-10 01:50:10,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:50:10,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:50:10,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:50:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:50:10,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:50:10,497 INFO L87 Difference]: Start difference. First operand 218 states and 348 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 01:50:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:50:10,542 INFO L93 Difference]: Finished difference Result 432 states and 699 transitions. [2022-01-10 01:50:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:50:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2022-01-10 01:50:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:50:10,547 INFO L225 Difference]: With dead ends: 432 [2022-01-10 01:50:10,547 INFO L226 Difference]: Without dead ends: 398 [2022-01-10 01:50:10,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:50:10,548 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 307 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:50:10,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:50:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-01-10 01:50:10,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2022-01-10 01:50:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 135 states have call successors, (135), 18 states have call predecessors, (135), 18 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2022-01-10 01:50:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 648 transitions. [2022-01-10 01:50:10,580 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 648 transitions. Word has length 94 [2022-01-10 01:50:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:50:10,580 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 648 transitions. [2022-01-10 01:50:10,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 01:50:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 648 transitions. [2022-01-10 01:50:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 01:50:10,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:50:10,590 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:10,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:50:10,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:50:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:50:10,591 INFO L85 PathProgramCache]: Analyzing trace with hash -800885455, now seen corresponding path program 1 times [2022-01-10 01:50:10,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:50:10,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130013657] [2022-01-10 01:50:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:50:10,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:50:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-10 01:50:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:50:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 01:50:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 01:50:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 01:50:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:50:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:50:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 01:50:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-10 01:50:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-10 01:50:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 01:50:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-10 01:50:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-10 01:50:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-10 01:50:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-10 01:50:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-10 01:50:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-10 01:50:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-10 01:50:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:50:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:50:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-10 01:50:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-10 01:50:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-01-10 01:50:19,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:50:19,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130013657] [2022-01-10 01:50:19,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130013657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:50:19,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:50:19,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:50:19,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934400454] [2022-01-10 01:50:19,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:50:19,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:50:19,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:50:19,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:50:19,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:50:19,878 INFO L87 Difference]: Start difference. First operand 397 states and 648 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-01-10 01:50:21,895 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 01:50:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:50:23,527 INFO L93 Difference]: Finished difference Result 1402 states and 2348 transitions. [2022-01-10 01:50:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:50:23,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2022-01-10 01:50:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:50:23,538 INFO L225 Difference]: With dead ends: 1402 [2022-01-10 01:50:23,538 INFO L226 Difference]: Without dead ends: 1014 [2022-01-10 01:50:23,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-01-10 01:50:23,546 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 708 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:50:23,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1810 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1265 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-01-10 01:50:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-01-10 01:50:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 893. [2022-01-10 01:50:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 542 states have (on average 1.529520295202952) internal successors, (829), 559 states have internal predecessors, (829), 307 states have call successors, (307), 36 states have call predecessors, (307), 43 states have return successors, (350), 307 states have call predecessors, (350), 307 states have call successors, (350) [2022-01-10 01:50:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1486 transitions. [2022-01-10 01:50:23,637 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1486 transitions. Word has length 183 [2022-01-10 01:50:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:50:23,638 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 1486 transitions. [2022-01-10 01:50:23,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-01-10 01:50:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1486 transitions. [2022-01-10 01:50:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 01:50:23,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:50:23,645 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:23,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:50:23,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:50:23,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:50:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash -856649123, now seen corresponding path program 1 times [2022-01-10 01:50:23,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:50:23,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582048412] [2022-01-10 01:50:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:50:23,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:50:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-01-10 01:50:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:50:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 01:50:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 01:50:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 01:50:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:50:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:50:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 01:50:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-10 01:50:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-10 01:50:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 01:50:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-10 01:50:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-10 01:50:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-10 01:50:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-10 01:50:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-10 01:50:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-10 01:50:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-10 01:50:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:50:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:50:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-10 01:50:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-10 01:50:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-01-10 01:50:32,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:50:32,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582048412] [2022-01-10 01:50:32,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582048412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:50:32,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:50:32,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 01:50:32,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373343105] [2022-01-10 01:50:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:50:32,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:50:32,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:50:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:50:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:50:32,910 INFO L87 Difference]: Start difference. First operand 893 states and 1486 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-01-10 01:50:34,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 01:50:36,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:50:36,786 INFO L93 Difference]: Finished difference Result 1883 states and 3132 transitions. [2022-01-10 01:50:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:50:36,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 183 [2022-01-10 01:50:36,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:50:36,793 INFO L225 Difference]: With dead ends: 1883 [2022-01-10 01:50:36,793 INFO L226 Difference]: Without dead ends: 959 [2022-01-10 01:50:36,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-01-10 01:50:36,799 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 855 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 452 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:50:36,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 1531 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 1168 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-01-10 01:50:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-01-10 01:50:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 875. [2022-01-10 01:50:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 532 states have (on average 1.5244360902255638) internal successors, (811), 549 states have internal predecessors, (811), 299 states have call successors, (299), 35 states have call predecessors, (299), 43 states have return successors, (335), 300 states have call predecessors, (335), 299 states have call successors, (335) [2022-01-10 01:50:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1445 transitions. [2022-01-10 01:50:36,846 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1445 transitions. Word has length 183 [2022-01-10 01:50:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:50:36,846 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1445 transitions. [2022-01-10 01:50:36,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-01-10 01:50:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1445 transitions. [2022-01-10 01:50:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 01:50:36,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:50:36,852 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:36,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:50:36,852 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:50:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:50:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1909419641, now seen corresponding path program 1 times [2022-01-10 01:50:36,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:50:36,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972124795] [2022-01-10 01:50:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:50:36,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:50:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:50:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:50:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 01:50:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-01-10 01:50:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-01-10 01:50:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:50:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-01-10 01:50:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-01-10 01:50:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 01:50:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-10 01:50:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-01-10 01:50:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-01-10 01:50:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-01-10 01:50:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-01-10 01:50:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-10 01:50:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-01-10 01:50:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-10 01:50:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-01-10 01:50:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-01-10 01:50:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-01-10 01:50:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:50:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-01-10 01:50:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-01-10 01:50:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:50:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2022-01-10 01:50:52,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:50:52,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972124795] [2022-01-10 01:50:52,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972124795] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:50:52,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334021772] [2022-01-10 01:50:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:50:52,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:50:52,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:50:52,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:50:52,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process