/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 11:13:25,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 11:13:25,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 11:13:25,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 11:13:25,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 11:13:25,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 11:13:25,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 11:13:25,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 11:13:25,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 11:13:25,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 11:13:25,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 11:13:25,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 11:13:25,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 11:13:25,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 11:13:25,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 11:13:25,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 11:13:25,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 11:13:25,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 11:13:25,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 11:13:25,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 11:13:25,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 11:13:25,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 11:13:25,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 11:13:25,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 11:13:25,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 11:13:25,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 11:13:25,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 11:13:25,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 11:13:25,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 11:13:25,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 11:13:25,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 11:13:25,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 11:13:25,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 11:13:25,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 11:13:25,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 11:13:25,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 11:13:25,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 11:13:25,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 11:13:25,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 11:13:25,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 11:13:25,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 11:13:25,851 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 11:13:25,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 11:13:25,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 11:13:25,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 11:13:25,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 11:13:25,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 11:13:25,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 11:13:25,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 11:13:25,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:13:25,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 11:13:25,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 11:13:25,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 11:13:25,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 11:13:25,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 11:13:25,854 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 11:13:25,854 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 11:13:25,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 11:13:26,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 11:13:26,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 11:13:26,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 11:13:26,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 11:13:26,136 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 11:13:26,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-06-10 11:13:26,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876cdfd3e/ccab231049ce4e8bb42ef5569bce0a95/FLAG45b5cc5e0 [2021-06-10 11:13:26,554 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 11:13:26,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-06-10 11:13:26,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876cdfd3e/ccab231049ce4e8bb42ef5569bce0a95/FLAG45b5cc5e0 [2021-06-10 11:13:26,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876cdfd3e/ccab231049ce4e8bb42ef5569bce0a95 [2021-06-10 11:13:26,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 11:13:26,921 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 11:13:26,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 11:13:26,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 11:13:26,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 11:13:26,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:13:26" (1/1) ... [2021-06-10 11:13:26,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f94e18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:26, skipping insertion in model container [2021-06-10 11:13:26,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:13:26" (1/1) ... [2021-06-10 11:13:26,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 11:13:26,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 11:13:27,094 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-10 11:13:27,212 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-06-10 11:13:27,219 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-06-10 11:13:27,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:13:27,231 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 11:13:27,253 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-10 11:13:27,267 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-06-10 11:13:27,269 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-06-10 11:13:27,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:13:27,320 INFO L208 MainTranslator]: Completed translation [2021-06-10 11:13:27,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27 WrapperNode [2021-06-10 11:13:27,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 11:13:27,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 11:13:27,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 11:13:27,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 11:13:27,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 11:13:27,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 11:13:27,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 11:13:27,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 11:13:27,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (1/1) ... [2021-06-10 11:13:27,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 11:13:27,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 11:13:27,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 11:13:27,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 11:13:27,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (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 [2021-06-10 11:13:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 11:13:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-06-10 11:13:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-06-10 11:13:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-10 11:13:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-10 11:13:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 11:13:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 11:13:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 11:13:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 11:13:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 11:13:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 11:13:27,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 11:13:27,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 11:13:27,471 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 11:13:27,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 11:13:27,700 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-06-10 11:13:27,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:13:27 BoogieIcfgContainer [2021-06-10 11:13:27,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 11:13:27,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 11:13:27,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 11:13:27,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 11:13:27,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:13:26" (1/3) ... [2021-06-10 11:13:27,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a68c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:13:27, skipping insertion in model container [2021-06-10 11:13:27,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:13:27" (2/3) ... [2021-06-10 11:13:27,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a68c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:13:27, skipping insertion in model container [2021-06-10 11:13:27,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:13:27" (3/3) ... [2021-06-10 11:13:27,706 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-06-10 11:13:27,710 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 11:13:27,712 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 11:13:27,713 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 11:13:27,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,731 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,731 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,732 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,732 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,733 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,734 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,735 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,735 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,735 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,736 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,750 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,750 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:13:27,755 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-10 11:13:27,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-10 11:13:27,779 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 11:13:27,779 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 11:13:27,779 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 11:13:27,780 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 11:13:27,780 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 11:13:27,780 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 11:13:27,780 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 11:13:27,780 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 11:13:27,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2021-06-10 11:13:27,812 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2021-06-10 11:13:27,812 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 11:13:27,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-06-10 11:13:27,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 96 transitions, 214 flow [2021-06-10 11:13:27,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 84 transitions, 180 flow [2021-06-10 11:13:27,827 INFO L129 PetriNetUnfolder]: 5/48 cut-off events. [2021-06-10 11:13:27,827 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:13:27,827 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:13:27,828 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:13:27,828 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:13:27,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:13:27,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1649314809, now seen corresponding path program 1 times [2021-06-10 11:13:27,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:13:27,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24751802] [2021-06-10 11:13:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:13:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:13:27,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:27,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:27,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:27,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:13:27,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24751802] [2021-06-10 11:13:27,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:13:27,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 11:13:27,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384826676] [2021-06-10 11:13:27,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 11:13:27,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:13:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 11:13:27,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 11:13:27,966 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 96 [2021-06-10 11:13:27,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:27,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:13:27,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 96 [2021-06-10 11:13:27,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:13:28,001 INFO L129 PetriNetUnfolder]: 6/79 cut-off events. [2021-06-10 11:13:28,001 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 11:13:28,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 6/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 148 event pairs, 0 based on Foata normal form. 7/77 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2021-06-10 11:13:28,003 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 0 selfloop transitions, 0 changer transitions 1/77 dead transitions. [2021-06-10 11:13:28,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 166 flow [2021-06-10 11:13:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 11:13:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 11:13:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 185 transitions. [2021-06-10 11:13:28,010 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9635416666666666 [2021-06-10 11:13:28,011 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 185 transitions. [2021-06-10 11:13:28,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 185 transitions. [2021-06-10 11:13:28,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:13:28,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 185 transitions. [2021-06-10 11:13:28,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.5) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,018 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,019 INFO L185 Difference]: Start difference. First operand has 77 places, 84 transitions, 180 flow. Second operand 2 states and 185 transitions. [2021-06-10 11:13:28,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 166 flow [2021-06-10 11:13:28,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 11:13:28,023 INFO L241 Difference]: Finished difference. Result has 74 places, 76 transitions, 156 flow [2021-06-10 11:13:28,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2021-06-10 11:13:28,025 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2021-06-10 11:13:28,025 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 156 flow [2021-06-10 11:13:28,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:13:28,025 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:13:28,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 11:13:28,026 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:13:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:13:28,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1649344600, now seen corresponding path program 1 times [2021-06-10 11:13:28,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:13:28,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688638531] [2021-06-10 11:13:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:13:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:13:28,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:13:28,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:13:28,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688638531] [2021-06-10 11:13:28,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:13:28,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:13:28,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995898472] [2021-06-10 11:13:28,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:13:28,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:13:28,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:13:28,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:13:28,090 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 96 [2021-06-10 11:13:28,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:13:28,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 96 [2021-06-10 11:13:28,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:13:28,143 INFO L129 PetriNetUnfolder]: 13/138 cut-off events. [2021-06-10 11:13:28,143 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 11:13:28,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 138 events. 13/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 486 event pairs, 2 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 168. Up to 18 conditions per place. [2021-06-10 11:13:28,145 INFO L132 encePairwiseOnDemand]: 91/96 looper letters, 7 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2021-06-10 11:13:28,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 182 flow [2021-06-10 11:13:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:13:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:13:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2021-06-10 11:13:28,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2021-06-10 11:13:28,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2021-06-10 11:13:28,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2021-06-10 11:13:28,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:13:28,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2021-06-10 11:13:28,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,155 INFO L185 Difference]: Start difference. First operand has 74 places, 76 transitions, 156 flow. Second operand 3 states and 258 transitions. [2021-06-10 11:13:28,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 182 flow [2021-06-10 11:13:28,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 11:13:28,159 INFO L241 Difference]: Finished difference. Result has 77 places, 77 transitions, 176 flow [2021-06-10 11:13:28,159 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2021-06-10 11:13:28,160 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2021-06-10 11:13:28,160 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 176 flow [2021-06-10 11:13:28,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,160 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:13:28,160 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:13:28,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 11:13:28,161 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:13:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:13:28,164 INFO L82 PathProgramCache]: Analyzing trace with hash -641579850, now seen corresponding path program 1 times [2021-06-10 11:13:28,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:13:28,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166846427] [2021-06-10 11:13:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:13:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:13:28,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 11:13:28,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:13:28,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166846427] [2021-06-10 11:13:28,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:13:28,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:13:28,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726815807] [2021-06-10 11:13:28,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:13:28,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:13:28,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:13:28,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:13:28,197 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 96 [2021-06-10 11:13:28,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:13:28,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 96 [2021-06-10 11:13:28,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:13:28,235 INFO L129 PetriNetUnfolder]: 8/120 cut-off events. [2021-06-10 11:13:28,236 INFO L130 PetriNetUnfolder]: For 14/17 co-relation queries the response was YES. [2021-06-10 11:13:28,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 120 events. 8/120 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 383 event pairs, 2 based on Foata normal form. 6/118 useless extension candidates. Maximal degree in co-relation 160. Up to 11 conditions per place. [2021-06-10 11:13:28,236 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 6 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2021-06-10 11:13:28,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 192 flow [2021-06-10 11:13:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:13:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:13:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2021-06-10 11:13:28,240 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-06-10 11:13:28,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2021-06-10 11:13:28,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2021-06-10 11:13:28,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:13:28,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2021-06-10 11:13:28,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,242 INFO L185 Difference]: Start difference. First operand has 77 places, 77 transitions, 176 flow. Second operand 3 states and 256 transitions. [2021-06-10 11:13:28,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 192 flow [2021-06-10 11:13:28,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 11:13:28,243 INFO L241 Difference]: Finished difference. Result has 78 places, 77 transitions, 180 flow [2021-06-10 11:13:28,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2021-06-10 11:13:28,244 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2021-06-10 11:13:28,244 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 180 flow [2021-06-10 11:13:28,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:13:28,244 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:13:28,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 11:13:28,245 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:13:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:13:28,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1697389045, now seen corresponding path program 1 times [2021-06-10 11:13:28,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:13:28,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753862016] [2021-06-10 11:13:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:13:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:13:28,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:13:28,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 11:13:28,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:13:28,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753862016] [2021-06-10 11:13:28,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:13:28,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:13:28,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677941920] [2021-06-10 11:13:28,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:13:28,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:13:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:13:28,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:13:28,315 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 96 [2021-06-10 11:13:28,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:13:28,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 96 [2021-06-10 11:13:28,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:13:28,381 INFO L129 PetriNetUnfolder]: 47/273 cut-off events. [2021-06-10 11:13:28,382 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2021-06-10 11:13:28,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 273 events. 47/273 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1370 event pairs, 9 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 373. Up to 27 conditions per place. [2021-06-10 11:13:28,385 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 11 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2021-06-10 11:13:28,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 244 flow [2021-06-10 11:13:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:13:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:13:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2021-06-10 11:13:28,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8708333333333333 [2021-06-10 11:13:28,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2021-06-10 11:13:28,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2021-06-10 11:13:28,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:13:28,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2021-06-10 11:13:28,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,389 INFO L185 Difference]: Start difference. First operand has 78 places, 77 transitions, 180 flow. Second operand 5 states and 418 transitions. [2021-06-10 11:13:28,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 244 flow [2021-06-10 11:13:28,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 11:13:28,393 INFO L241 Difference]: Finished difference. Result has 84 places, 83 transitions, 235 flow [2021-06-10 11:13:28,393 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2021-06-10 11:13:28,394 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2021-06-10 11:13:28,394 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 235 flow [2021-06-10 11:13:28,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,394 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:13:28,394 INFO L263 CegarLoopForPetriNet]: 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] [2021-06-10 11:13:28,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 11:13:28,394 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:13:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:13:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 273972301, now seen corresponding path program 2 times [2021-06-10 11:13:28,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:13:28,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672327696] [2021-06-10 11:13:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:13:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:13:28,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:13:28,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 11:13:28,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:13:28,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:13:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:13:28,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672327696] [2021-06-10 11:13:28,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:13:28,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 11:13:28,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723483120] [2021-06-10 11:13:28,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 11:13:28,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:13:28,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 11:13:28,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 11:13:28,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 96 [2021-06-10 11:13:28,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:13:28,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 96 [2021-06-10 11:13:28,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:13:28,486 INFO L129 PetriNetUnfolder]: 96/381 cut-off events. [2021-06-10 11:13:28,487 INFO L130 PetriNetUnfolder]: For 50/52 co-relation queries the response was YES. [2021-06-10 11:13:28,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 381 events. 96/381 cut-off events. For 50/52 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2014 event pairs, 11 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 611. Up to 39 conditions per place. [2021-06-10 11:13:28,488 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2021-06-10 11:13:28,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 292 flow [2021-06-10 11:13:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:13:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:13:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2021-06-10 11:13:28,492 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8729166666666667 [2021-06-10 11:13:28,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 419 transitions. [2021-06-10 11:13:28,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 419 transitions. [2021-06-10 11:13:28,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:13:28,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 419 transitions. [2021-06-10 11:13:28,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,499 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,499 INFO L185 Difference]: Start difference. First operand has 84 places, 83 transitions, 235 flow. Second operand 5 states and 419 transitions. [2021-06-10 11:13:28,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 292 flow [2021-06-10 11:13:28,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 286 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-06-10 11:13:28,502 INFO L241 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2021-06-10 11:13:28,503 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2021-06-10 11:13:28,503 INFO L343 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2021-06-10 11:13:28,503 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2021-06-10 11:13:28,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 11:13:28,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 11:13:28,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:13:28 BasicIcfg [2021-06-10 11:13:28,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 11:13:28,508 INFO L168 Benchmark]: Toolchain (without parser) took 1585.66 ms. Allocated memory is still 400.6 MB. Free memory was 363.4 MB in the beginning and 220.7 MB in the end (delta: 142.7 MB). Peak memory consumption was 143.8 MB. Max. memory is 16.0 GB. [2021-06-10 11:13:28,508 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 400.6 MB. Free memory is still 381.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:13:28,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.72 ms. Allocated memory is still 400.6 MB. Free memory was 363.2 MB in the beginning and 362.2 MB in the end (delta: 956.7 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-10 11:13:28,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 400.6 MB. Free memory was 362.2 MB in the beginning and 360.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:13:28,512 INFO L168 Benchmark]: Boogie Preprocessor took 28.33 ms. Allocated memory is still 400.6 MB. Free memory was 360.1 MB in the beginning and 359.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:13:28,512 INFO L168 Benchmark]: RCFGBuilder took 310.21 ms. Allocated memory is still 400.6 MB. Free memory was 359.1 MB in the beginning and 333.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:13:28,513 INFO L168 Benchmark]: TraceAbstraction took 803.85 ms. Allocated memory is still 400.6 MB. Free memory was 332.9 MB in the beginning and 220.7 MB in the end (delta: 112.2 MB). Peak memory consumption was 113.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:13:28,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 400.6 MB. Free memory is still 381.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 397.72 ms. Allocated memory is still 400.6 MB. Free memory was 363.2 MB in the beginning and 362.2 MB in the end (delta: 956.7 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 400.6 MB. Free memory was 362.2 MB in the beginning and 360.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.33 ms. Allocated memory is still 400.6 MB. Free memory was 360.1 MB in the beginning and 359.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 310.21 ms. Allocated memory is still 400.6 MB. Free memory was 359.1 MB in the beginning and 333.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 803.85 ms. Allocated memory is still 400.6 MB. Free memory was 332.9 MB in the beginning and 220.7 MB in the end (delta: 112.2 MB). Peak memory consumption was 113.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 726.9ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 334.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 39.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 22 SDslu, 16 SDs, 0 SdLazy, 57 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.0ms SsaConstructionTime, 58.3ms SatisfiabilityAnalysisTime, 162.3ms InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...