/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-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:42:24,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:42:24,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:42:24,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:42:24,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:42:24,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:42:24,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:42:24,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:42:24,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:42:24,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:42:24,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:42:24,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 19:42:24,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 19:42:24,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 19:42:24,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 19:42:24,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 19:42:24,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 19:42:24,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 19:42:24,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 19:42:24,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 19:42:24,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 19:42:24,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 19:42:24,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 19:42:24,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 19:42:24,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 19:42:24,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 19:42:24,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 19:42:24,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 19:42:24,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 19:42:24,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 19:42:24,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 19:42:24,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 19:42:24,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 19:42:24,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 19:42:24,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 19:42:24,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 19:42:24,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 19:42:24,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 19:42:24,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 19:42:24,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 19:42:24,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 19:42:24,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:42:24,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:42:24,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:42:24,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:42:24,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:42:24,790 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:42:24,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:42:24,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:42:24,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:42:24,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:42:24,791 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:42:24,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:42:24,792 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:42:24,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:42:24,792 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:42:24,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:42:24,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:42:24,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:42:24,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:42:24,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:42:24,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:42:24,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:42:24,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:42:24,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:42:24,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:42:24,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:42:25,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:42:25,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:42:25,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:42:25,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:42:25,291 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:42:25,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-12-22 19:42:25,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9285bfe/c43b5418c5454660bef6d3eb909bc2f9/FLAG5bf932ee8 [2020-12-22 19:42:25,989 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:42:25,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-12-22 19:42:26,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9285bfe/c43b5418c5454660bef6d3eb909bc2f9/FLAG5bf932ee8 [2020-12-22 19:42:26,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d9285bfe/c43b5418c5454660bef6d3eb909bc2f9 [2020-12-22 19:42:26,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:42:26,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:42:26,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:26,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:42:26,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:42:26,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:26,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21318842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26, skipping insertion in model container [2020-12-22 19:42:26,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:26,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:42:26,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:42:26,794 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/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2020-12-22 19:42:26,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:26,821 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:42:26,954 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/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c[29620,29633] [2020-12-22 19:42:26,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:26,983 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:42:26,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26 WrapperNode [2020-12-22 19:42:26,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:26,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:26,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:42:26,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:42:26,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:27,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:42:27,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:42:27,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:42:27,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (1/1) ... [2020-12-22 19:42:27,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:42:27,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:42:27,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:42:27,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:42:27,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (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 19:42:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:42:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:42:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:42:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:42:27,496 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,505 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,519 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,533 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,545 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,556 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,577 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,597 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,616 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,629 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,644 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:27,668 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 19:42:28,723 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume false; [2020-12-22 19:42:28,724 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##250: assume !false; [2020-12-22 19:42:28,724 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##279: assume false; [2020-12-22 19:42:28,724 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##280: assume !false; [2020-12-22 19:42:28,724 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##219: assume false; [2020-12-22 19:42:28,725 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##220: assume !false; [2020-12-22 19:42:28,725 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##302: assume !false; [2020-12-22 19:42:28,725 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume false; [2020-12-22 19:42:28,725 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##322: assume !false; [2020-12-22 19:42:28,725 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##321: assume false; [2020-12-22 19:42:28,728 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-22 19:42:28,728 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-22 19:42:28,728 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2020-12-22 19:42:28,728 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2020-12-22 19:42:28,729 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2020-12-22 19:42:28,729 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2020-12-22 19:42:28,729 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume false; [2020-12-22 19:42:28,729 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##141: assume !false; [2020-12-22 19:42:28,730 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##389: assume !false; [2020-12-22 19:42:28,730 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##388: assume false; [2020-12-22 19:42:28,730 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-12-22 19:42:28,730 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-12-22 19:42:28,730 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume !false; [2020-12-22 19:42:28,731 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##161: assume false; [2020-12-22 19:42:28,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:42:28,764 INFO L299 CfgBuilder]: Removed 152 assume(true) statements. [2020-12-22 19:42:28,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:28 BoogieIcfgContainer [2020-12-22 19:42:28,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:42:28,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:42:28,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:42:28,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:42:28,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:42:26" (1/3) ... [2020-12-22 19:42:28,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d044982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:28, skipping insertion in model container [2020-12-22 19:42:28,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:26" (2/3) ... [2020-12-22 19:42:28,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d044982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:28, skipping insertion in model container [2020-12-22 19:42:28,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:28" (3/3) ... [2020-12-22 19:42:28,781 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2020-12-22 19:42:28,790 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:42:28,802 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-12-22 19:42:28,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-12-22 19:42:28,866 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:42:28,866 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:42:28,867 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:42:28,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:42:28,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:42:28,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:42:28,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:42:28,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:42:28,920 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states. [2020-12-22 19:42:28,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 19:42:28,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:28,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:28,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:28,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1805892153, now seen corresponding path program 1 times [2020-12-22 19:42:28,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:28,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54172418] [2020-12-22 19:42:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:29,261 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 19:42:29,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54172418] [2020-12-22 19:42:29,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:29,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:29,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907667711] [2020-12-22 19:42:29,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:29,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:29,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:29,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:29,291 INFO L87 Difference]: Start difference. First operand 329 states. Second operand 3 states. [2020-12-22 19:42:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:29,379 INFO L93 Difference]: Finished difference Result 333 states and 460 transitions. [2020-12-22 19:42:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:29,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 19:42:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:29,398 INFO L225 Difference]: With dead ends: 333 [2020-12-22 19:42:29,398 INFO L226 Difference]: Without dead ends: 329 [2020-12-22 19:42:29,400 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 19:42:29,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-22 19:42:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2020-12-22 19:42:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-12-22 19:42:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 455 transitions. [2020-12-22 19:42:29,479 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 455 transitions. Word has length 7 [2020-12-22 19:42:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:29,480 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 455 transitions. [2020-12-22 19:42:29,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 455 transitions. [2020-12-22 19:42:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:42:29,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:29,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:29,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:42:29,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:29,484 INFO L82 PathProgramCache]: Analyzing trace with hash 557701687, now seen corresponding path program 1 times [2020-12-22 19:42:29,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:29,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332086693] [2020-12-22 19:42:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:29,586 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 19:42:29,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332086693] [2020-12-22 19:42:29,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:29,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:29,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747511354] [2020-12-22 19:42:29,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:29,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:29,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:29,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:29,593 INFO L87 Difference]: Start difference. First operand 327 states and 455 transitions. Second operand 3 states. [2020-12-22 19:42:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:29,853 INFO L93 Difference]: Finished difference Result 374 states and 522 transitions. [2020-12-22 19:42:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:29,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 19:42:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:29,861 INFO L225 Difference]: With dead ends: 374 [2020-12-22 19:42:29,861 INFO L226 Difference]: Without dead ends: 374 [2020-12-22 19:42:29,863 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 19:42:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-12-22 19:42:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 355. [2020-12-22 19:42:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-12-22 19:42:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 494 transitions. [2020-12-22 19:42:29,905 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 494 transitions. Word has length 13 [2020-12-22 19:42:29,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:29,906 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 494 transitions. [2020-12-22 19:42:29,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 494 transitions. [2020-12-22 19:42:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 19:42:29,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:29,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:29,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:42:29,908 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:29,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1801870964, now seen corresponding path program 1 times [2020-12-22 19:42:29,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:29,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134119116] [2020-12-22 19:42:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:29,960 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 19:42:29,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134119116] [2020-12-22 19:42:29,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:29,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:29,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817097557] [2020-12-22 19:42:29,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:29,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:29,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:29,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:29,963 INFO L87 Difference]: Start difference. First operand 355 states and 494 transitions. Second operand 3 states. [2020-12-22 19:42:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:29,972 INFO L93 Difference]: Finished difference Result 354 states and 493 transitions. [2020-12-22 19:42:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:29,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 19:42:29,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:29,975 INFO L225 Difference]: With dead ends: 354 [2020-12-22 19:42:29,975 INFO L226 Difference]: Without dead ends: 347 [2020-12-22 19:42:29,976 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 19:42:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-22 19:42:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2020-12-22 19:42:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-12-22 19:42:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 475 transitions. [2020-12-22 19:42:29,987 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 475 transitions. Word has length 13 [2020-12-22 19:42:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:29,987 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 475 transitions. [2020-12-22 19:42:29,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 475 transitions. [2020-12-22 19:42:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 19:42:29,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:29,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:29,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:42:29,990 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:29,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1900748477, now seen corresponding path program 1 times [2020-12-22 19:42:29,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:29,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113199640] [2020-12-22 19:42:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:30,042 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 19:42:30,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113199640] [2020-12-22 19:42:30,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:30,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:30,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944776280] [2020-12-22 19:42:30,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:30,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:30,046 INFO L87 Difference]: Start difference. First operand 347 states and 475 transitions. Second operand 3 states. [2020-12-22 19:42:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:30,079 INFO L93 Difference]: Finished difference Result 354 states and 483 transitions. [2020-12-22 19:42:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:30,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 19:42:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:30,082 INFO L225 Difference]: With dead ends: 354 [2020-12-22 19:42:30,082 INFO L226 Difference]: Without dead ends: 354 [2020-12-22 19:42:30,083 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 19:42:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-12-22 19:42:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 303. [2020-12-22 19:42:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-12-22 19:42:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 417 transitions. [2020-12-22 19:42:30,095 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 417 transitions. Word has length 15 [2020-12-22 19:42:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:30,096 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 417 transitions. [2020-12-22 19:42:30,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 417 transitions. [2020-12-22 19:42:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:30,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:30,099 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] [2020-12-22 19:42:30,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:42:30,099 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:30,100 INFO L82 PathProgramCache]: Analyzing trace with hash 306593718, now seen corresponding path program 1 times [2020-12-22 19:42:30,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:30,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285712610] [2020-12-22 19:42:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:30,152 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 19:42:30,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285712610] [2020-12-22 19:42:30,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:30,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:30,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560787763] [2020-12-22 19:42:30,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:30,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:30,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:30,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:30,155 INFO L87 Difference]: Start difference. First operand 303 states and 417 transitions. Second operand 3 states. [2020-12-22 19:42:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:30,280 INFO L93 Difference]: Finished difference Result 289 states and 403 transitions. [2020-12-22 19:42:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:30,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:30,283 INFO L225 Difference]: With dead ends: 289 [2020-12-22 19:42:30,283 INFO L226 Difference]: Without dead ends: 289 [2020-12-22 19:42:30,284 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 19:42:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-22 19:42:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-12-22 19:42:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-12-22 19:42:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2020-12-22 19:42:30,291 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 21 [2020-12-22 19:42:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:30,291 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2020-12-22 19:42:30,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2020-12-22 19:42:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:30,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:30,294 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] [2020-12-22 19:42:30,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:42:30,294 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash 847063989, now seen corresponding path program 1 times [2020-12-22 19:42:30,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:30,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174329052] [2020-12-22 19:42:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:30,409 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 19:42:30,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174329052] [2020-12-22 19:42:30,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:30,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:42:30,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282076207] [2020-12-22 19:42:30,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:42:30,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:30,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:42:30,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:42:30,413 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand 4 states. [2020-12-22 19:42:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:30,555 INFO L93 Difference]: Finished difference Result 305 states and 421 transitions. [2020-12-22 19:42:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:42:30,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-22 19:42:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:30,560 INFO L225 Difference]: With dead ends: 305 [2020-12-22 19:42:30,560 INFO L226 Difference]: Without dead ends: 305 [2020-12-22 19:42:30,561 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 19:42:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-12-22 19:42:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 299. [2020-12-22 19:42:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 19:42:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 415 transitions. [2020-12-22 19:42:30,572 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 415 transitions. Word has length 26 [2020-12-22 19:42:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:30,572 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 415 transitions. [2020-12-22 19:42:30,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:42:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 415 transitions. [2020-12-22 19:42:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:30,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:30,574 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] [2020-12-22 19:42:30,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:42:30,575 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1660315800, now seen corresponding path program 1 times [2020-12-22 19:42:30,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:30,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266942195] [2020-12-22 19:42:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:30,676 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 19:42:30,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266942195] [2020-12-22 19:42:30,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:30,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:30,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193174281] [2020-12-22 19:42:30,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:30,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:30,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:30,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:30,681 INFO L87 Difference]: Start difference. First operand 299 states and 415 transitions. Second operand 3 states. [2020-12-22 19:42:30,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:30,768 INFO L93 Difference]: Finished difference Result 296 states and 411 transitions. [2020-12-22 19:42:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:30,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:30,772 INFO L225 Difference]: With dead ends: 296 [2020-12-22 19:42:30,772 INFO L226 Difference]: Without dead ends: 296 [2020-12-22 19:42:30,774 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 19:42:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-22 19:42:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2020-12-22 19:42:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-12-22 19:42:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 411 transitions. [2020-12-22 19:42:30,785 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 411 transitions. Word has length 27 [2020-12-22 19:42:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:30,786 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 411 transitions. [2020-12-22 19:42:30,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 411 transitions. [2020-12-22 19:42:30,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:30,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:30,790 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] [2020-12-22 19:42:30,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:42:30,791 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:30,792 INFO L82 PathProgramCache]: Analyzing trace with hash -23036524, now seen corresponding path program 1 times [2020-12-22 19:42:30,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:30,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470149130] [2020-12-22 19:42:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:30,853 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 19:42:30,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470149130] [2020-12-22 19:42:30,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:30,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:30,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184963920] [2020-12-22 19:42:30,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:30,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:30,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:30,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:30,857 INFO L87 Difference]: Start difference. First operand 296 states and 411 transitions. Second operand 3 states. [2020-12-22 19:42:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:30,875 INFO L93 Difference]: Finished difference Result 309 states and 425 transitions. [2020-12-22 19:42:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:30,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:30,878 INFO L225 Difference]: With dead ends: 309 [2020-12-22 19:42:30,878 INFO L226 Difference]: Without dead ends: 309 [2020-12-22 19:42:30,879 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 19:42:30,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-22 19:42:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 296. [2020-12-22 19:42:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-12-22 19:42:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 410 transitions. [2020-12-22 19:42:30,886 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 410 transitions. Word has length 27 [2020-12-22 19:42:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:30,888 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 410 transitions. [2020-12-22 19:42:30,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 410 transitions. [2020-12-22 19:42:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:30,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:30,889 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] [2020-12-22 19:42:30,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:42:30,891 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:30,894 INFO L82 PathProgramCache]: Analyzing trace with hash 476963846, now seen corresponding path program 1 times [2020-12-22 19:42:30,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:30,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081887322] [2020-12-22 19:42:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:30,960 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 19:42:30,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081887322] [2020-12-22 19:42:30,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:30,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:42:30,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648722627] [2020-12-22 19:42:30,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:42:30,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:30,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:42:30,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:42:30,965 INFO L87 Difference]: Start difference. First operand 296 states and 410 transitions. Second operand 4 states. [2020-12-22 19:42:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,102 INFO L93 Difference]: Finished difference Result 302 states and 415 transitions. [2020-12-22 19:42:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:42:31,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-12-22 19:42:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,111 INFO L225 Difference]: With dead ends: 302 [2020-12-22 19:42:31,111 INFO L226 Difference]: Without dead ends: 302 [2020-12-22 19:42:31,114 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 19:42:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-12-22 19:42:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 297. [2020-12-22 19:42:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-22 19:42:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 411 transitions. [2020-12-22 19:42:31,122 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 411 transitions. Word has length 27 [2020-12-22 19:42:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,123 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 411 transitions. [2020-12-22 19:42:31,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:42:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 411 transitions. [2020-12-22 19:42:31,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:31,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,128 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] [2020-12-22 19:42:31,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:42:31,128 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1894183263, now seen corresponding path program 1 times [2020-12-22 19:42:31,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893763179] [2020-12-22 19:42:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,177 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 19:42:31,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893763179] [2020-12-22 19:42:31,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:31,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245881860] [2020-12-22 19:42:31,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:31,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:31,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:31,180 INFO L87 Difference]: Start difference. First operand 297 states and 411 transitions. Second operand 3 states. [2020-12-22 19:42:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,195 INFO L93 Difference]: Finished difference Result 290 states and 400 transitions. [2020-12-22 19:42:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:31,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,196 INFO L225 Difference]: With dead ends: 290 [2020-12-22 19:42:31,197 INFO L226 Difference]: Without dead ends: 63 [2020-12-22 19:42:31,198 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 19:42:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-22 19:42:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-12-22 19:42:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 19:42:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2020-12-22 19:42:31,200 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 28 [2020-12-22 19:42:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,200 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2020-12-22 19:42:31,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2020-12-22 19:42:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:42:31,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,201 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] [2020-12-22 19:42:31,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:42:31,202 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash 403678015, now seen corresponding path program 1 times [2020-12-22 19:42:31,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064304404] [2020-12-22 19:42:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,283 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 19:42:31,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064304404] [2020-12-22 19:42:31,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:42:31,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322717168] [2020-12-22 19:42:31,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:42:31,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:42:31,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:42:31,287 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand 5 states. [2020-12-22 19:42:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,325 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2020-12-22 19:42:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:42:31,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 19:42:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,327 INFO L225 Difference]: With dead ends: 94 [2020-12-22 19:42:31,327 INFO L226 Difference]: Without dead ends: 94 [2020-12-22 19:42:31,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:42:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-22 19:42:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2020-12-22 19:42:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-22 19:42:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-12-22 19:42:31,331 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 30 [2020-12-22 19:42:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,333 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-12-22 19:42:31,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:42:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-12-22 19:42:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:42:31,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,335 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] [2020-12-22 19:42:31,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:42:31,336 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 361661719, now seen corresponding path program 1 times [2020-12-22 19:42:31,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908683698] [2020-12-22 19:42:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,408 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 19:42:31,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908683698] [2020-12-22 19:42:31,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:42:31,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720823567] [2020-12-22 19:42:31,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:42:31,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:42:31,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:42:31,412 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 5 states. [2020-12-22 19:42:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,445 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2020-12-22 19:42:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:42:31,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 19:42:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,447 INFO L225 Difference]: With dead ends: 79 [2020-12-22 19:42:31,447 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 19:42:31,448 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 19:42:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 19:42:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-12-22 19:42:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-22 19:42:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-12-22 19:42:31,451 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 30 [2020-12-22 19:42:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,451 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-12-22 19:42:31,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:42:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-12-22 19:42:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:42:31,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,456 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] [2020-12-22 19:42:31,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:42:31,459 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,459 INFO L82 PathProgramCache]: Analyzing trace with hash -378484437, now seen corresponding path program 1 times [2020-12-22 19:42:31,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612212066] [2020-12-22 19:42:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,521 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 19:42:31,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612212066] [2020-12-22 19:42:31,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:31,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391097508] [2020-12-22 19:42:31,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:31,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:31,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:31,524 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 3 states. [2020-12-22 19:42:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,536 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2020-12-22 19:42:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:31,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 19:42:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,540 INFO L225 Difference]: With dead ends: 127 [2020-12-22 19:42:31,540 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 19:42:31,547 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 19:42:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 19:42:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 117. [2020-12-22 19:42:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-22 19:42:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 142 transitions. [2020-12-22 19:42:31,551 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 142 transitions. Word has length 31 [2020-12-22 19:42:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,551 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 142 transitions. [2020-12-22 19:42:31,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 142 transitions. [2020-12-22 19:42:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 19:42:31,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,553 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] [2020-12-22 19:42:31,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:42:31,554 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,554 INFO L82 PathProgramCache]: Analyzing trace with hash -378424855, now seen corresponding path program 1 times [2020-12-22 19:42:31,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472097974] [2020-12-22 19:42:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,621 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 19:42:31,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472097974] [2020-12-22 19:42:31,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:42:31,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978847155] [2020-12-22 19:42:31,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:42:31,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:42:31,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:42:31,624 INFO L87 Difference]: Start difference. First operand 117 states and 142 transitions. Second operand 4 states. [2020-12-22 19:42:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,637 INFO L93 Difference]: Finished difference Result 105 states and 124 transitions. [2020-12-22 19:42:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:42:31,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 19:42:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,639 INFO L225 Difference]: With dead ends: 105 [2020-12-22 19:42:31,639 INFO L226 Difference]: Without dead ends: 105 [2020-12-22 19:42:31,641 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 19:42:31,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-22 19:42:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-12-22 19:42:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-22 19:42:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2020-12-22 19:42:31,644 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 31 [2020-12-22 19:42:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,646 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2020-12-22 19:42:31,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:42:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2020-12-22 19:42:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 19:42:31,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,647 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] [2020-12-22 19:42:31,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:42:31,647 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,648 INFO L82 PathProgramCache]: Analyzing trace with hash -329006014, now seen corresponding path program 1 times [2020-12-22 19:42:31,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479776356] [2020-12-22 19:42:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,737 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 19:42:31,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479776356] [2020-12-22 19:42:31,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:42:31,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193880238] [2020-12-22 19:42:31,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:42:31,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:42:31,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:42:31,739 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand 4 states. [2020-12-22 19:42:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,767 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-12-22 19:42:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:42:31,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-22 19:42:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,768 INFO L225 Difference]: With dead ends: 97 [2020-12-22 19:42:31,768 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 19:42:31,770 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 19:42:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 19:42:31,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-12-22 19:42:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-22 19:42:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2020-12-22 19:42:31,773 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 32 [2020-12-22 19:42:31,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,774 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2020-12-22 19:42:31,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:42:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2020-12-22 19:42:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:42:31,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,775 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] [2020-12-22 19:42:31,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:42:31,775 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1781478438, now seen corresponding path program 1 times [2020-12-22 19:42:31,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066061519] [2020-12-22 19:42:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,826 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 19:42:31,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066061519] [2020-12-22 19:42:31,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:31,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242506332] [2020-12-22 19:42:31,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:31,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:31,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:31,829 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand 3 states. [2020-12-22 19:42:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,839 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2020-12-22 19:42:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:31,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-22 19:42:31,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,841 INFO L225 Difference]: With dead ends: 108 [2020-12-22 19:42:31,842 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 19:42:31,842 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 19:42:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 19:42:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95. [2020-12-22 19:42:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 19:42:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2020-12-22 19:42:31,845 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 34 [2020-12-22 19:42:31,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,845 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2020-12-22 19:42:31,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:31,845 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2020-12-22 19:42:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:42:31,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,846 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] [2020-12-22 19:42:31,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:42:31,847 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1662125936, now seen corresponding path program 1 times [2020-12-22 19:42:31,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661253393] [2020-12-22 19:42:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,880 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 19:42:31,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661253393] [2020-12-22 19:42:31,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:31,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759604428] [2020-12-22 19:42:31,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:31,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:31,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:31,883 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand 3 states. [2020-12-22 19:42:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:31,902 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2020-12-22 19:42:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:31,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-22 19:42:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:31,918 INFO L225 Difference]: With dead ends: 109 [2020-12-22 19:42:31,918 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 19:42:31,919 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 19:42:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 19:42:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2020-12-22 19:42:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 19:42:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2020-12-22 19:42:31,922 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 34 [2020-12-22 19:42:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:31,922 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2020-12-22 19:42:31,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2020-12-22 19:42:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 19:42:31,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:31,923 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] [2020-12-22 19:42:31,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:42:31,923 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:31,924 INFO L82 PathProgramCache]: Analyzing trace with hash -822248422, now seen corresponding path program 1 times [2020-12-22 19:42:31,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:31,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663816217] [2020-12-22 19:42:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:31,979 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 19:42:31,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663816217] [2020-12-22 19:42:31,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:31,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:42:31,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161256584] [2020-12-22 19:42:31,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:42:31,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:31,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:42:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:42:31,988 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand 5 states. [2020-12-22 19:42:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:32,015 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2020-12-22 19:42:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:42:32,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-22 19:42:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:32,017 INFO L225 Difference]: With dead ends: 108 [2020-12-22 19:42:32,017 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 19:42:32,019 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 19:42:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 19:42:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2020-12-22 19:42:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 19:42:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-12-22 19:42:32,021 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 34 [2020-12-22 19:42:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:32,022 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-12-22 19:42:32,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:42:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-12-22 19:42:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:42:32,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:32,022 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] [2020-12-22 19:42:32,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:42:32,023 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:32,023 INFO L82 PathProgramCache]: Analyzing trace with hash -21362253, now seen corresponding path program 1 times [2020-12-22 19:42:32,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:32,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362241760] [2020-12-22 19:42:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:32,095 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 19:42:32,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362241760] [2020-12-22 19:42:32,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:32,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 19:42:32,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109029541] [2020-12-22 19:42:32,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 19:42:32,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:32,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 19:42:32,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 19:42:32,098 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 4 states. [2020-12-22 19:42:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:32,124 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2020-12-22 19:42:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 19:42:32,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 19:42:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:32,125 INFO L225 Difference]: With dead ends: 96 [2020-12-22 19:42:32,125 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:42:32,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:42:32,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:42:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-22 19:42:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:42:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-12-22 19:42:32,128 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 35 [2020-12-22 19:42:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:32,128 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-12-22 19:42:32,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 19:42:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-12-22 19:42:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:42:32,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:32,129 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] [2020-12-22 19:42:32,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:42:32,129 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash 272561262, now seen corresponding path program 1 times [2020-12-22 19:42:32,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:32,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94988642] [2020-12-22 19:42:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:32,182 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 19:42:32,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94988642] [2020-12-22 19:42:32,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:32,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 19:42:32,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282858924] [2020-12-22 19:42:32,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 19:42:32,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:32,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 19:42:32,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 19:42:32,185 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 5 states. [2020-12-22 19:42:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:32,212 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-12-22 19:42:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 19:42:32,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-12-22 19:42:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:32,213 INFO L225 Difference]: With dead ends: 88 [2020-12-22 19:42:32,214 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 19:42:32,214 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 19:42:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 19:42:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-22 19:42:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 19:42:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-12-22 19:42:32,216 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 35 [2020-12-22 19:42:32,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:32,217 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-12-22 19:42:32,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 19:42:32,217 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-12-22 19:42:32,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 19:42:32,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:32,217 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] [2020-12-22 19:42:32,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:42:32,218 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:32,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1030061199, now seen corresponding path program 1 times [2020-12-22 19:42:32,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:32,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641477861] [2020-12-22 19:42:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:32,248 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 19:42:32,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641477861] [2020-12-22 19:42:32,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:32,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:32,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584139671] [2020-12-22 19:42:32,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:32,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:32,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:32,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:32,250 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 3 states. [2020-12-22 19:42:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:32,257 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2020-12-22 19:42:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:32,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-22 19:42:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:32,258 INFO L225 Difference]: With dead ends: 82 [2020-12-22 19:42:32,259 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 19:42:32,259 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 19:42:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 19:42:32,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-22 19:42:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-22 19:42:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-12-22 19:42:32,261 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 35 [2020-12-22 19:42:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:32,261 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-12-22 19:42:32,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-12-22 19:42:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 19:42:32,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:32,262 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] [2020-12-22 19:42:32,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:42:32,263 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:32,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1765065444, now seen corresponding path program 1 times [2020-12-22 19:42:32,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:32,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350959094] [2020-12-22 19:42:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:32,296 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 19:42:32,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350959094] [2020-12-22 19:42:32,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:32,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:32,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442707682] [2020-12-22 19:42:32,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:32,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:32,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:32,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:32,298 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 3 states. [2020-12-22 19:42:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:32,310 INFO L93 Difference]: Finished difference Result 58 states and 57 transitions. [2020-12-22 19:42:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:32,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 19:42:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:32,310 INFO L225 Difference]: With dead ends: 58 [2020-12-22 19:42:32,310 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:42:32,311 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 19:42:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:42:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:42:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:42:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:42:32,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-12-22 19:42:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:32,312 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:42:32,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:32,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:42:32,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:42:32,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:42:32,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:42:32 BoogieIcfgContainer [2020-12-22 19:42:32,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:42:32,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:42:32,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:42:32,319 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:42:32,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:28" (3/4) ... [2020-12-22 19:42:32,323 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:42:32,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2020-12-22 19:42:32,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2020-12-22 19:42:32,362 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-22 19:42:32,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:42:32,538 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c-witness.graphml [2020-12-22 19:42:32,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:42:32,540 INFO L168 Benchmark]: Toolchain (without parser) took 6214.02 ms. Allocated memory was 151.0 MB in the beginning and 209.7 MB in the end (delta: 58.7 MB). Free memory was 123.5 MB in the beginning and 79.8 MB in the end (delta: 43.7 MB). Peak memory consumption was 102.8 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:32,541 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:42:32,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.09 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 104.7 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:32,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.20 ms. Allocated memory is still 151.0 MB. Free memory was 104.7 MB in the beginning and 98.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:32,542 INFO L168 Benchmark]: Boogie Preprocessor took 86.64 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 94.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:32,542 INFO L168 Benchmark]: RCFGBuilder took 1584.44 ms. Allocated memory was 151.0 MB in the beginning and 209.7 MB in the end (delta: 58.7 MB). Free memory was 94.6 MB in the beginning and 183.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 50.4 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:32,543 INFO L168 Benchmark]: TraceAbstraction took 3546.86 ms. Allocated memory is still 209.7 MB. Free memory was 182.5 MB in the beginning and 103.4 MB in the end (delta: 79.1 MB). Peak memory consumption was 79.6 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:32,543 INFO L168 Benchmark]: Witness Printer took 219.47 ms. Allocated memory is still 209.7 MB. Free memory was 103.4 MB in the beginning and 79.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:32,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 654.09 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 104.7 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 109.20 ms. Allocated memory is still 151.0 MB. Free memory was 104.7 MB in the beginning and 98.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.64 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 94.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1584.44 ms. Allocated memory was 151.0 MB in the beginning and 209.7 MB in the end (delta: 58.7 MB). Free memory was 94.6 MB in the beginning and 183.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 50.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3546.86 ms. Allocated memory is still 209.7 MB. Free memory was 182.5 MB in the beginning and 103.4 MB in the end (delta: 79.1 MB). Peak memory consumption was 79.6 MB. Max. memory is 8.0 GB. * Witness Printer took 219.47 ms. Allocated memory is still 209.7 MB. Free memory was 103.4 MB in the beginning and 79.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 295]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1013]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 30 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 329 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4325 SDtfs, 3056 SDslu, 2254 SDs, 0 SdLazy, 707 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 157 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 607 NumberOfCodeBlocks, 607 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 45279 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...