/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:47:45,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:47:45,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:47:45,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:47:45,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:47:45,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:47:45,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:47:45,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:47:45,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:47:45,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:47:45,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:47:45,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:47:45,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:47:45,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:47:45,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:47:45,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:47:45,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:47:45,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:47:45,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:47:45,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:47:45,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:47:45,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:47:45,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:47:45,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:47:45,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:47:45,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:47:45,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:47:45,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:47:45,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:47:45,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:47:45,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:47:45,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:47:45,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:47:45,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:47:45,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:47:45,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:47:45,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:47:45,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:47:45,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:47:45,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:47:45,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:47:45,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:47:45,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:47:45,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:47:45,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:47:45,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:47:45,968 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:47:45,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:47:45,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:47:45,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:47:45,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:47:45,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:47:45,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:47:45,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:47:45,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:47:45,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:47:45,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:47:45,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:47:45,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:47:45,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:47:45,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:47:45,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:47:45,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:47:45,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:47:45,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:47:45,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:47:45,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:47:45,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:47:46,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:47:46,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:47:46,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:47:46,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:47:46,515 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:47:46,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2020-12-22 11:47:46,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b48f29c/fac3c64dc3ab403da89781679d27dfbe/FLAGec7ce931e [2020-12-22 11:47:47,700 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:47:47,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2020-12-22 11:47:47,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b48f29c/fac3c64dc3ab403da89781679d27dfbe/FLAGec7ce931e [2020-12-22 11:47:48,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b48f29c/fac3c64dc3ab403da89781679d27dfbe [2020-12-22 11:47:48,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:47:48,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:47:48,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:47:48,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:47:48,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:47:48,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:47:48" (1/1) ... [2020-12-22 11:47:48,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50946692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:48, skipping insertion in model container [2020-12-22 11:47:48,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:47:48" (1/1) ... [2020-12-22 11:47:48,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:47:48,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:47:50,819 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2020-12-22 11:47:50,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:47:50,909 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:47:51,488 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2020-12-22 11:47:51,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:47:52,042 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:47:52,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52 WrapperNode [2020-12-22 11:47:52,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:47:52,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:47:52,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:47:52,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:47:52,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:52,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:52,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:47:52,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:47:52,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:47:52,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:47:52,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:52,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:52,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:52,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:53,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:53,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:53,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... [2020-12-22 11:47:53,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:47:53,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:47:53,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:47:53,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:47:53,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:47:53,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 11:47:53,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 11:47:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:47:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:47:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:47:53,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:47:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 11:47:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2020-12-22 11:47:53,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2020-12-22 11:47:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 11:47:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:47:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:47:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:47:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:47:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_check_events [2020-12-22 11:47:53,530 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_check_events [2020-12-22 11:47:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:47:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:47:53,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:47:54,803 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,846 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,852 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,855 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,888 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,897 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,925 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,928 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:47:54,946 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:48:13,662 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1046: assume false; [2020-12-22 11:48:13,663 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1047: assume !false; [2020-12-22 11:48:13,663 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##503: assume !false; [2020-12-22 11:48:13,664 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##502: assume false; [2020-12-22 11:48:13,664 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##65: assume false; [2020-12-22 11:48:13,664 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume !false; [2020-12-22 11:48:13,664 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##589: assume false; [2020-12-22 11:48:13,664 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##590: assume !false; [2020-12-22 11:48:13,664 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##627: assume !false; [2020-12-22 11:48:13,665 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##626: assume false; [2020-12-22 11:48:13,665 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1663: assume false; [2020-12-22 11:48:13,665 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1664: assume !false; [2020-12-22 11:48:13,665 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1409: assume false; [2020-12-22 11:48:13,666 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1410: assume !false; [2020-12-22 11:48:13,666 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1462: assume false; [2020-12-22 11:48:13,666 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1463: assume !false; [2020-12-22 11:48:13,666 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##958: assume !false; [2020-12-22 11:48:13,666 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##957: assume false; [2020-12-22 11:48:13,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:48:13,700 INFO L299 CfgBuilder]: Removed 1773 assume(true) statements. [2020-12-22 11:48:13,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:48:13 BoogieIcfgContainer [2020-12-22 11:48:13,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:48:13,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:48:13,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:48:13,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:48:13,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:47:48" (1/3) ... [2020-12-22 11:48:13,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bbf9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:48:13, skipping insertion in model container [2020-12-22 11:48:13,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:47:52" (2/3) ... [2020-12-22 11:48:13,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bbf9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:48:13, skipping insertion in model container [2020-12-22 11:48:13,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:48:13" (3/3) ... [2020-12-22 11:48:13,714 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2020-12-22 11:48:13,720 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:48:13,731 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 11:48:13,751 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 11:48:13,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:48:13,807 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:48:13,808 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:48:13,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:48:13,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:48:13,808 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:48:13,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:48:13,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:48:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states. [2020-12-22 11:48:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:48:13,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:13,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:13,876 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash -86151642, now seen corresponding path program 1 times [2020-12-22 11:48:13,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:13,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907736625] [2020-12-22 11:48:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:14,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907736625] [2020-12-22 11:48:14,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:14,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:48:14,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282777337] [2020-12-22 11:48:14,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:48:14,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:14,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:48:14,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:48:14,745 INFO L87 Difference]: Start difference. First operand 1914 states. Second operand 3 states. [2020-12-22 11:48:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:15,077 INFO L93 Difference]: Finished difference Result 5669 states and 7923 transitions. [2020-12-22 11:48:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:48:15,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 11:48:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:15,123 INFO L225 Difference]: With dead ends: 5669 [2020-12-22 11:48:15,123 INFO L226 Difference]: Without dead ends: 3738 [2020-12-22 11:48:15,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:48:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2020-12-22 11:48:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3730. [2020-12-22 11:48:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3730 states. [2020-12-22 11:48:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5077 transitions. [2020-12-22 11:48:15,549 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5077 transitions. Word has length 13 [2020-12-22 11:48:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:15,549 INFO L481 AbstractCegarLoop]: Abstraction has 3730 states and 5077 transitions. [2020-12-22 11:48:15,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:48:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5077 transitions. [2020-12-22 11:48:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 11:48:15,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:15,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:15,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:48:15,559 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash 970211147, now seen corresponding path program 1 times [2020-12-22 11:48:15,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:15,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974388513] [2020-12-22 11:48:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:15,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974388513] [2020-12-22 11:48:15,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:15,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:48:15,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411112350] [2020-12-22 11:48:15,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:48:15,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:15,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:48:15,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:48:15,944 INFO L87 Difference]: Start difference. First operand 3730 states and 5077 transitions. Second operand 4 states. [2020-12-22 11:48:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:16,156 INFO L93 Difference]: Finished difference Result 7406 states and 10086 transitions. [2020-12-22 11:48:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:48:16,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 11:48:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:16,181 INFO L225 Difference]: With dead ends: 7406 [2020-12-22 11:48:16,184 INFO L226 Difference]: Without dead ends: 3730 [2020-12-22 11:48:16,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:48:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2020-12-22 11:48:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3730. [2020-12-22 11:48:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3730 states. [2020-12-22 11:48:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5076 transitions. [2020-12-22 11:48:16,376 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5076 transitions. Word has length 65 [2020-12-22 11:48:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:16,376 INFO L481 AbstractCegarLoop]: Abstraction has 3730 states and 5076 transitions. [2020-12-22 11:48:16,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:48:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5076 transitions. [2020-12-22 11:48:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 11:48:16,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:16,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:16,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:48:16,383 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1345747310, now seen corresponding path program 1 times [2020-12-22 11:48:16,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:16,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42104659] [2020-12-22 11:48:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:16,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42104659] [2020-12-22 11:48:16,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:16,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:48:16,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461842972] [2020-12-22 11:48:16,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:48:16,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:48:16,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:48:16,896 INFO L87 Difference]: Start difference. First operand 3730 states and 5076 transitions. Second operand 3 states. [2020-12-22 11:48:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:17,214 INFO L93 Difference]: Finished difference Result 11046 states and 15050 transitions. [2020-12-22 11:48:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:48:17,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 11:48:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:17,255 INFO L225 Difference]: With dead ends: 11046 [2020-12-22 11:48:17,256 INFO L226 Difference]: Without dead ends: 7372 [2020-12-22 11:48:17,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:48:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2020-12-22 11:48:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 3750. [2020-12-22 11:48:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3750 states. [2020-12-22 11:48:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5104 transitions. [2020-12-22 11:48:17,437 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5104 transitions. Word has length 69 [2020-12-22 11:48:17,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:17,438 INFO L481 AbstractCegarLoop]: Abstraction has 3750 states and 5104 transitions. [2020-12-22 11:48:17,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:48:17,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5104 transitions. [2020-12-22 11:48:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 11:48:17,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:17,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:17,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:48:17,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash 875382655, now seen corresponding path program 1 times [2020-12-22 11:48:17,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:17,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146057204] [2020-12-22 11:48:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:18,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146057204] [2020-12-22 11:48:18,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:18,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:48:18,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785547114] [2020-12-22 11:48:18,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:48:18,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:18,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:48:18,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:48:18,154 INFO L87 Difference]: Start difference. First operand 3750 states and 5104 transitions. Second operand 5 states. [2020-12-22 11:48:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:18,400 INFO L93 Difference]: Finished difference Result 7448 states and 10143 transitions. [2020-12-22 11:48:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:48:18,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 11:48:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:18,421 INFO L225 Difference]: With dead ends: 7448 [2020-12-22 11:48:18,422 INFO L226 Difference]: Without dead ends: 3750 [2020-12-22 11:48:18,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:48:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2020-12-22 11:48:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2020-12-22 11:48:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3750 states. [2020-12-22 11:48:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5103 transitions. [2020-12-22 11:48:18,583 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5103 transitions. Word has length 72 [2020-12-22 11:48:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:18,585 INFO L481 AbstractCegarLoop]: Abstraction has 3750 states and 5103 transitions. [2020-12-22 11:48:18,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:48:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5103 transitions. [2020-12-22 11:48:18,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 11:48:18,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:18,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:18,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:48:18,591 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:18,592 INFO L82 PathProgramCache]: Analyzing trace with hash 174558702, now seen corresponding path program 1 times [2020-12-22 11:48:18,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:18,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099048997] [2020-12-22 11:48:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:19,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099048997] [2020-12-22 11:48:19,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:19,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:48:19,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851888071] [2020-12-22 11:48:19,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:48:19,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:19,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:48:19,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:48:19,366 INFO L87 Difference]: Start difference. First operand 3750 states and 5103 transitions. Second operand 6 states. [2020-12-22 11:48:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:19,708 INFO L93 Difference]: Finished difference Result 7477 states and 10178 transitions. [2020-12-22 11:48:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:48:19,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 11:48:19,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:19,728 INFO L225 Difference]: With dead ends: 7477 [2020-12-22 11:48:19,728 INFO L226 Difference]: Without dead ends: 3750 [2020-12-22 11:48:19,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:48:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2020-12-22 11:48:19,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2020-12-22 11:48:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3750 states. [2020-12-22 11:48:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 5102 transitions. [2020-12-22 11:48:19,879 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 5102 transitions. Word has length 83 [2020-12-22 11:48:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:19,879 INFO L481 AbstractCegarLoop]: Abstraction has 3750 states and 5102 transitions. [2020-12-22 11:48:19,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:48:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 5102 transitions. [2020-12-22 11:48:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 11:48:19,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:19,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:19,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:48:19,888 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:19,890 INFO L82 PathProgramCache]: Analyzing trace with hash 309930551, now seen corresponding path program 1 times [2020-12-22 11:48:19,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:19,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402070303] [2020-12-22 11:48:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:20,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402070303] [2020-12-22 11:48:20,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:20,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:48:20,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159126828] [2020-12-22 11:48:20,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:48:20,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:48:20,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:48:20,200 INFO L87 Difference]: Start difference. First operand 3750 states and 5102 transitions. Second operand 4 states. [2020-12-22 11:48:20,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:20,776 INFO L93 Difference]: Finished difference Result 18479 states and 25178 transitions. [2020-12-22 11:48:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:48:20,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 11:48:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:20,851 INFO L225 Difference]: With dead ends: 18479 [2020-12-22 11:48:20,851 INFO L226 Difference]: Without dead ends: 14780 [2020-12-22 11:48:20,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:48:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14780 states. [2020-12-22 11:48:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14780 to 3752. [2020-12-22 11:48:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2020-12-22 11:48:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5104 transitions. [2020-12-22 11:48:21,128 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5104 transitions. Word has length 85 [2020-12-22 11:48:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:21,129 INFO L481 AbstractCegarLoop]: Abstraction has 3752 states and 5104 transitions. [2020-12-22 11:48:21,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:48:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5104 transitions. [2020-12-22 11:48:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 11:48:21,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:21,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:21,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:48:21,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:21,140 INFO L82 PathProgramCache]: Analyzing trace with hash 302728500, now seen corresponding path program 1 times [2020-12-22 11:48:21,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:21,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124402230] [2020-12-22 11:48:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:21,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124402230] [2020-12-22 11:48:21,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:21,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:48:21,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11522554] [2020-12-22 11:48:21,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:48:21,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:21,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:48:21,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:48:21,810 INFO L87 Difference]: Start difference. First operand 3752 states and 5104 transitions. Second operand 6 states. [2020-12-22 11:48:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:24,623 INFO L93 Difference]: Finished difference Result 17460 states and 23924 transitions. [2020-12-22 11:48:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 11:48:24,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2020-12-22 11:48:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:24,663 INFO L225 Difference]: With dead ends: 17460 [2020-12-22 11:48:24,664 INFO L226 Difference]: Without dead ends: 13716 [2020-12-22 11:48:24,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:48:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13716 states. [2020-12-22 11:48:24,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13716 to 3752. [2020-12-22 11:48:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2020-12-22 11:48:24,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 5103 transitions. [2020-12-22 11:48:24,959 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 5103 transitions. Word has length 86 [2020-12-22 11:48:24,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:24,959 INFO L481 AbstractCegarLoop]: Abstraction has 3752 states and 5103 transitions. [2020-12-22 11:48:24,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:48:24,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 5103 transitions. [2020-12-22 11:48:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 11:48:24,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:24,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:24,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:48:24,963 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:24,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1152728039, now seen corresponding path program 1 times [2020-12-22 11:48:24,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:24,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173430498] [2020-12-22 11:48:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:25,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173430498] [2020-12-22 11:48:25,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:25,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:48:25,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999905650] [2020-12-22 11:48:25,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:48:25,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:25,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:48:25,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:48:25,570 INFO L87 Difference]: Start difference. First operand 3752 states and 5103 transitions. Second operand 7 states. [2020-12-22 11:48:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:35,039 INFO L93 Difference]: Finished difference Result 97510 states and 135591 transitions. [2020-12-22 11:48:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 11:48:35,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-12-22 11:48:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:35,542 INFO L225 Difference]: With dead ends: 97510 [2020-12-22 11:48:35,543 INFO L226 Difference]: Without dead ends: 93778 [2020-12-22 11:48:35,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 11:48:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93778 states. [2020-12-22 11:48:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93778 to 7438. [2020-12-22 11:48:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7438 states. [2020-12-22 11:48:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 10126 transitions. [2020-12-22 11:48:37,193 INFO L78 Accepts]: Start accepts. Automaton has 7438 states and 10126 transitions. Word has length 89 [2020-12-22 11:48:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:37,196 INFO L481 AbstractCegarLoop]: Abstraction has 7438 states and 10126 transitions. [2020-12-22 11:48:37,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:48:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 7438 states and 10126 transitions. [2020-12-22 11:48:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 11:48:37,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:37,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:37,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:48:37,201 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:37,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1520097109, now seen corresponding path program 1 times [2020-12-22 11:48:37,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:37,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798974293] [2020-12-22 11:48:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:40,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798974293] [2020-12-22 11:48:40,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:40,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:48:40,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007961589] [2020-12-22 11:48:40,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:48:40,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:40,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:48:40,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:48:40,526 INFO L87 Difference]: Start difference. First operand 7438 states and 10126 transitions. Second operand 5 states. [2020-12-22 11:48:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:41,439 INFO L93 Difference]: Finished difference Result 11122 states and 15138 transitions. [2020-12-22 11:48:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:48:41,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 11:48:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:41,458 INFO L225 Difference]: With dead ends: 11122 [2020-12-22 11:48:41,458 INFO L226 Difference]: Without dead ends: 7428 [2020-12-22 11:48:41,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:48:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2020-12-22 11:48:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 7428. [2020-12-22 11:48:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7428 states. [2020-12-22 11:48:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 10110 transitions. [2020-12-22 11:48:42,215 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 10110 transitions. Word has length 92 [2020-12-22 11:48:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:42,215 INFO L481 AbstractCegarLoop]: Abstraction has 7428 states and 10110 transitions. [2020-12-22 11:48:42,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:48:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 10110 transitions. [2020-12-22 11:48:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 11:48:42,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:42,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:42,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:48:42,221 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:42,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:42,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1819233965, now seen corresponding path program 1 times [2020-12-22 11:48:42,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:42,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809801745] [2020-12-22 11:48:42,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:42,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809801745] [2020-12-22 11:48:42,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:42,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:48:42,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193112744] [2020-12-22 11:48:42,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:48:42,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:42,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:48:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:48:42,644 INFO L87 Difference]: Start difference. First operand 7428 states and 10110 transitions. Second operand 3 states. [2020-12-22 11:48:45,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:45,613 INFO L93 Difference]: Finished difference Result 11135 states and 15154 transitions. [2020-12-22 11:48:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:48:45,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 11:48:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:45,633 INFO L225 Difference]: With dead ends: 11135 [2020-12-22 11:48:45,634 INFO L226 Difference]: Without dead ends: 7441 [2020-12-22 11:48:45,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:48:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2020-12-22 11:48:46,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 7428. [2020-12-22 11:48:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7428 states. [2020-12-22 11:48:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 10101 transitions. [2020-12-22 11:48:46,492 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 10101 transitions. Word has length 99 [2020-12-22 11:48:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:46,494 INFO L481 AbstractCegarLoop]: Abstraction has 7428 states and 10101 transitions. [2020-12-22 11:48:46,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:48:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 10101 transitions. [2020-12-22 11:48:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 11:48:46,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:46,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:46,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:48:46,501 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash 831220146, now seen corresponding path program 1 times [2020-12-22 11:48:46,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:46,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921199536] [2020-12-22 11:48:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:49,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921199536] [2020-12-22 11:48:49,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:49,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:48:49,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152805023] [2020-12-22 11:48:49,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:48:49,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:49,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:48:49,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:48:49,202 INFO L87 Difference]: Start difference. First operand 7428 states and 10101 transitions. Second operand 5 states. [2020-12-22 11:48:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:49,655 INFO L93 Difference]: Finished difference Result 7446 states and 10114 transitions. [2020-12-22 11:48:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:48:49,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 11:48:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:49,666 INFO L225 Difference]: With dead ends: 7446 [2020-12-22 11:48:49,667 INFO L226 Difference]: Without dead ends: 3742 [2020-12-22 11:48:49,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:48:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2020-12-22 11:48:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2020-12-22 11:48:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2020-12-22 11:48:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 5078 transitions. [2020-12-22 11:48:50,075 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 5078 transitions. Word has length 100 [2020-12-22 11:48:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:50,075 INFO L481 AbstractCegarLoop]: Abstraction has 3742 states and 5078 transitions. [2020-12-22 11:48:50,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:48:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 5078 transitions. [2020-12-22 11:48:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 11:48:50,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:50,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:50,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:48:50,079 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:50,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2046428545, now seen corresponding path program 1 times [2020-12-22 11:48:50,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:50,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910607612] [2020-12-22 11:48:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:48:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:48:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:48:53,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910607612] [2020-12-22 11:48:53,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:48:53,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:48:53,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117944430] [2020-12-22 11:48:53,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:48:53,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:48:53,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:48:53,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:48:53,872 INFO L87 Difference]: Start difference. First operand 3742 states and 5078 transitions. Second operand 6 states. [2020-12-22 11:48:58,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:48:58,556 INFO L93 Difference]: Finished difference Result 37159 states and 51059 transitions. [2020-12-22 11:48:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 11:48:58,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-12-22 11:48:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:48:58,644 INFO L225 Difference]: With dead ends: 37159 [2020-12-22 11:48:58,645 INFO L226 Difference]: Without dead ends: 33454 [2020-12-22 11:48:58,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 11:48:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33454 states. [2020-12-22 11:48:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33454 to 3746. [2020-12-22 11:48:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3746 states. [2020-12-22 11:48:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 5082 transitions. [2020-12-22 11:48:59,349 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 5082 transitions. Word has length 100 [2020-12-22 11:48:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:48:59,349 INFO L481 AbstractCegarLoop]: Abstraction has 3746 states and 5082 transitions. [2020-12-22 11:48:59,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:48:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 5082 transitions. [2020-12-22 11:48:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 11:48:59,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:48:59,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:48:59,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:48:59,353 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:48:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:48:59,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1032385025, now seen corresponding path program 1 times [2020-12-22 11:48:59,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:48:59,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869109658] [2020-12-22 11:48:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:49:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:49:09,876 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-12-22 11:49:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:49:10,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869109658] [2020-12-22 11:49:10,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:49:10,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 11:49:10,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731904144] [2020-12-22 11:49:10,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 11:49:10,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:49:10,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 11:49:10,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-12-22 11:49:10,642 INFO L87 Difference]: Start difference. First operand 3746 states and 5082 transitions. Second operand 19 states. [2020-12-22 11:49:29,793 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-12-22 11:49:29,998 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-12-22 11:49:30,214 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-12-22 11:49:30,426 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-12-22 11:49:30,671 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-12-22 11:49:30,921 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-12-22 11:49:36,727 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-12-22 11:50:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:50:16,200 INFO L93 Difference]: Finished difference Result 7894 states and 10732 transitions. [2020-12-22 11:50:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 11:50:16,205 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-12-22 11:50:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:50:16,216 INFO L225 Difference]: With dead ends: 7894 [2020-12-22 11:50:16,217 INFO L226 Difference]: Without dead ends: 4200 [2020-12-22 11:50:16,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2020-12-22 11:50:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2020-12-22 11:50:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 3883. [2020-12-22 11:50:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-12-22 11:50:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5282 transitions. [2020-12-22 11:50:16,767 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5282 transitions. Word has length 100 [2020-12-22 11:50:16,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:50:16,767 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5282 transitions. [2020-12-22 11:50:16,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 11:50:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5282 transitions. [2020-12-22 11:50:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 11:50:16,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:50:16,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:50:16,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 11:50:16,772 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:50:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:50:16,773 INFO L82 PathProgramCache]: Analyzing trace with hash 961952832, now seen corresponding path program 1 times [2020-12-22 11:50:16,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:50:16,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104697744] [2020-12-22 11:50:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:50:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:50:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:50:17,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104697744] [2020-12-22 11:50:17,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818416199] [2020-12-22 11:50:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:50:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:50:18,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 11:50:18,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:50:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:50:19,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 11:50:19,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 11:50:19,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580980813] [2020-12-22 11:50:19,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:50:19,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:50:19,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:50:19,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:50:19,042 INFO L87 Difference]: Start difference. First operand 3883 states and 5282 transitions. Second operand 5 states. [2020-12-22 11:50:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:50:20,960 INFO L93 Difference]: Finished difference Result 14841 states and 20188 transitions. [2020-12-22 11:50:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:50:20,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-12-22 11:50:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:50:20,992 INFO L225 Difference]: With dead ends: 14841 [2020-12-22 11:50:20,993 INFO L226 Difference]: Without dead ends: 11147 [2020-12-22 11:50:21,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:50:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11147 states. [2020-12-22 11:50:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11147 to 3903. [2020-12-22 11:50:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3903 states. [2020-12-22 11:50:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 5310 transitions. [2020-12-22 11:50:21,738 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 5310 transitions. Word has length 101 [2020-12-22 11:50:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:50:21,739 INFO L481 AbstractCegarLoop]: Abstraction has 3903 states and 5310 transitions. [2020-12-22 11:50:21,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:50:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 5310 transitions. [2020-12-22 11:50:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 11:50:21,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:50:21,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:50:21,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 11:50:21,960 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:50:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:50:21,961 INFO L82 PathProgramCache]: Analyzing trace with hash -464394573, now seen corresponding path program 1 times [2020-12-22 11:50:21,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:50:21,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669391964] [2020-12-22 11:50:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:50:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:50:29,328 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-12-22 11:50:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:50:29,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669391964] [2020-12-22 11:50:29,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026063109] [2020-12-22 11:50:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true