/usr/bin/java -Xmx8000000000 -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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 15:31:11,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 15:31:11,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 15:31:11,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 15:31:11,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 15:31:11,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 15:31:11,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 15:31:11,704 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-FA-NoLbe.epf [2021-06-12 15:31:11,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 15:31:11,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 15:31:11,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 15:31:11,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 15:31:11,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 15:31:11,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 15:31:11,730 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 15:31:11,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 15:31:11,731 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 15:31:11,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 15:31:11,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 15:31:11,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 15:31:11,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 15:31:11,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 15:31:11,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 15:31:11,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 15:31:11,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 15:31:11,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 15:31:11,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 15:31:11,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 15:31:11,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 15:31:11,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 15:31:11,734 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 15:31:11,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 15:31:11,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 15:31:11,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 15:31:12,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 15:31:12,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 15:31:12,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 15:31:12,021 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 15:31:12,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-12 15:31:12,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35372962c/233ab71fb9bd4975907bce03d9cab258/FLAG7bd3aa134 [2021-06-12 15:31:12,531 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 15:31:12,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2021-06-12 15:31:12,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35372962c/233ab71fb9bd4975907bce03d9cab258/FLAG7bd3aa134 [2021-06-12 15:31:12,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35372962c/233ab71fb9bd4975907bce03d9cab258 [2021-06-12 15:31:12,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 15:31:12,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 15:31:12,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 15:31:12,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 15:31:12,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 15:31:12,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:31:12" (1/1) ... [2021-06-12 15:31:12,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634f7077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:12, skipping insertion in model container [2021-06-12 15:31:12,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:31:12" (1/1) ... [2021-06-12 15:31:12,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 15:31:12,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 15:31:13,051 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-12 15:31:13,164 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-06-12 15:31:13,177 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-06-12 15:31:13,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:31:13,195 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 15:31:13,213 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-12 15:31:13,234 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2021-06-12 15:31:13,237 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2021-06-12 15:31:13,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:31:13,283 INFO L208 MainTranslator]: Completed translation [2021-06-12 15:31:13,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13 WrapperNode [2021-06-12 15:31:13,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 15:31:13,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 15:31:13,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 15:31:13,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 15:31:13,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 15:31:13,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 15:31:13,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 15:31:13,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 15:31:13,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (1/1) ... [2021-06-12 15:31:13,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 15:31:13,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 15:31:13,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 15:31:13,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 15:31:13,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (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 [2021-06-12 15:31:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-12 15:31:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-06-12 15:31:13,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-12 15:31:13,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 15:31:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 15:31:13,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 15:31:13,401 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 15:31:13,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 15:31:13,777 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-06-12 15:31:13,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:31:13 BoogieIcfgContainer [2021-06-12 15:31:13,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 15:31:13,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 15:31:13,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 15:31:13,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 15:31:13,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 03:31:12" (1/3) ... [2021-06-12 15:31:13,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707cc84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:31:13, skipping insertion in model container [2021-06-12 15:31:13,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:31:13" (2/3) ... [2021-06-12 15:31:13,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707cc84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:31:13, skipping insertion in model container [2021-06-12 15:31:13,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:31:13" (3/3) ... [2021-06-12 15:31:13,786 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2021-06-12 15:31:13,790 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 15:31:13,790 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 15:31:13,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-12 15:31:13,791 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 15:31:13,820 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,821 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,822 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,824 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,826 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,829 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,830 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,852 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,852 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,852 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:31:13,861 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-12 15:31:13,877 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:31:13,898 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:31:13,899 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:31:13,899 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:31:13,899 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:31:13,899 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:31:13,899 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:31:13,899 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:31:13,899 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2======== [2021-06-12 15:31:13,910 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-12 15:31:14,034 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:14,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:31:14,068 INFO L301 ceAbstractionStarter]: Result for error location thr2 was SAFE (1/5) [2021-06-12 15:31:14,070 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:31:14,076 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:31:14,076 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:31:14,076 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:31:14,076 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:31:14,077 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:31:14,077 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:31:14,077 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:31:14,077 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1======== [2021-06-12 15:31:14,079 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-12 15:31:14,154 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:14,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:31:14,174 INFO L301 ceAbstractionStarter]: Result for error location thr1 was SAFE (2/5) [2021-06-12 15:31:14,175 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:31:14,182 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:31:14,182 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:31:14,182 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:31:14,182 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:31:14,182 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:31:14,182 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:31:14,182 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:31:14,182 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork0======== [2021-06-12 15:31:14,187 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-12 15:31:14,252 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-12 15:31:14,260 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:14,260 INFO L472 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] [2021-06-12 15:31:14,261 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:14,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1929720339, now seen corresponding path program 1 times [2021-06-12 15:31:14,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:14,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583500391] [2021-06-12 15:31:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:14,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:14,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583500391] [2021-06-12 15:31:14,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583500391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:14,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:14,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-12 15:31:14,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744471913] [2021-06-12 15:31:14,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-12 15:31:14,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:14,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-12 15:31:14,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-12 15:31:14,436 INFO L87 Difference]: Start difference. First operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-06-12 15:31:14,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:14,482 INFO L93 Difference]: Finished difference Result 3267 states and 9607 transitions. [2021-06-12 15:31:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-12 15:31:14,483 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-06-12 15:31:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:14,517 INFO L225 Difference]: With dead ends: 3267 [2021-06-12 15:31:14,517 INFO L226 Difference]: Without dead ends: 2358 [2021-06-12 15:31:14,518 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-12 15:31:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-06-12 15:31:14,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2358. [2021-06-12 15:31:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2356 states have (on average 2.9664685908319184) internal successors, (6989), 2357 states have internal predecessors, (6989), 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) [2021-06-12 15:31:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 6989 transitions. [2021-06-12 15:31:14,661 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 6989 transitions. Word has length 31 [2021-06-12 15:31:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:14,662 INFO L482 AbstractCegarLoop]: Abstraction has 2358 states and 6989 transitions. [2021-06-12 15:31:14,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-06-12 15:31:14,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 6989 transitions. [2021-06-12 15:31:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-06-12 15:31:14,664 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:14,664 INFO L472 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] [2021-06-12 15:31:14,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 15:31:14,664 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:14,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2126204053, now seen corresponding path program 1 times [2021-06-12 15:31:14,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:14,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450248400] [2021-06-12 15:31:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:14,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:14,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450248400] [2021-06-12 15:31:14,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450248400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:14,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:14,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:31:14,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256438227] [2021-06-12 15:31:14,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:31:14,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:14,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:31:14,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:31:14,742 INFO L87 Difference]: Start difference. First operand 2358 states and 6989 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-06-12 15:31:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:14,785 INFO L93 Difference]: Finished difference Result 2253 states and 6628 transitions. [2021-06-12 15:31:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:31:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-06-12 15:31:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:14,791 INFO L225 Difference]: With dead ends: 2253 [2021-06-12 15:31:14,791 INFO L226 Difference]: Without dead ends: 1479 [2021-06-12 15:31:14,792 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:31:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-06-12 15:31:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1479. [2021-06-12 15:31:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 2.943127962085308) internal successors, (4347), 1478 states have internal predecessors, (4347), 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) [2021-06-12 15:31:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 4347 transitions. [2021-06-12 15:31:14,823 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 4347 transitions. Word has length 31 [2021-06-12 15:31:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:14,823 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 4347 transitions. [2021-06-12 15:31:14,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-06-12 15:31:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 4347 transitions. [2021-06-12 15:31:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:14,827 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:14,827 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:14,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 15:31:14,827 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:14,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1230815636, now seen corresponding path program 1 times [2021-06-12 15:31:14,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:14,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794690259] [2021-06-12 15:31:14,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:14,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:14,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794690259] [2021-06-12 15:31:14,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794690259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:14,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:14,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:14,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200524096] [2021-06-12 15:31:14,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:14,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:14,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:14,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:14,888 INFO L87 Difference]: Start difference. First operand 1479 states and 4347 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:14,981 INFO L93 Difference]: Finished difference Result 1723 states and 5033 transitions. [2021-06-12 15:31:14,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:14,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:14,987 INFO L225 Difference]: With dead ends: 1723 [2021-06-12 15:31:14,987 INFO L226 Difference]: Without dead ends: 1355 [2021-06-12 15:31:14,987 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:14,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2021-06-12 15:31:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1239. [2021-06-12 15:31:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 2.8803556992724335) internal successors, (3563), 1238 states have internal predecessors, (3563), 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) [2021-06-12 15:31:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3563 transitions. [2021-06-12 15:31:15,015 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 3563 transitions. Word has length 48 [2021-06-12 15:31:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:15,016 INFO L482 AbstractCegarLoop]: Abstraction has 1239 states and 3563 transitions. [2021-06-12 15:31:15,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 3563 transitions. [2021-06-12 15:31:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:15,018 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:15,018 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:15,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 15:31:15,019 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:15,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1379198464, now seen corresponding path program 2 times [2021-06-12 15:31:15,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:15,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158456849] [2021-06-12 15:31:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:15,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:15,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158456849] [2021-06-12 15:31:15,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158456849] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:15,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:15,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:15,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779148723] [2021-06-12 15:31:15,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:15,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:15,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:15,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:15,070 INFO L87 Difference]: Start difference. First operand 1239 states and 3563 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:15,146 INFO L93 Difference]: Finished difference Result 1643 states and 4649 transitions. [2021-06-12 15:31:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:15,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:15,153 INFO L225 Difference]: With dead ends: 1643 [2021-06-12 15:31:15,153 INFO L226 Difference]: Without dead ends: 1535 [2021-06-12 15:31:15,153 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-06-12 15:31:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1327. [2021-06-12 15:31:15,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1325 states have (on average 2.8264150943396227) internal successors, (3745), 1326 states have internal predecessors, (3745), 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) [2021-06-12 15:31:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 3745 transitions. [2021-06-12 15:31:15,209 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 3745 transitions. Word has length 48 [2021-06-12 15:31:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:15,210 INFO L482 AbstractCegarLoop]: Abstraction has 1327 states and 3745 transitions. [2021-06-12 15:31:15,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 3745 transitions. [2021-06-12 15:31:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:15,213 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:15,213 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:15,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 15:31:15,213 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:15,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:15,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2052134990, now seen corresponding path program 3 times [2021-06-12 15:31:15,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:15,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142960310] [2021-06-12 15:31:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:15,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:15,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142960310] [2021-06-12 15:31:15,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142960310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:15,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:15,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:15,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757539843] [2021-06-12 15:31:15,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:15,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:15,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:15,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:15,258 INFO L87 Difference]: Start difference. First operand 1327 states and 3745 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:15,320 INFO L93 Difference]: Finished difference Result 1904 states and 5286 transitions. [2021-06-12 15:31:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:15,327 INFO L225 Difference]: With dead ends: 1904 [2021-06-12 15:31:15,328 INFO L226 Difference]: Without dead ends: 1904 [2021-06-12 15:31:15,328 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2021-06-12 15:31:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1499. [2021-06-12 15:31:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1497 states have (on average 2.8336673346693386) internal successors, (4242), 1498 states have internal predecessors, (4242), 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) [2021-06-12 15:31:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 4242 transitions. [2021-06-12 15:31:15,358 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 4242 transitions. Word has length 48 [2021-06-12 15:31:15,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:15,359 INFO L482 AbstractCegarLoop]: Abstraction has 1499 states and 4242 transitions. [2021-06-12 15:31:15,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 4242 transitions. [2021-06-12 15:31:15,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:15,361 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:15,361 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:15,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 15:31:15,362 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:15,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:15,362 INFO L82 PathProgramCache]: Analyzing trace with hash -846251270, now seen corresponding path program 4 times [2021-06-12 15:31:15,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:15,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177388341] [2021-06-12 15:31:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:15,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:15,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177388341] [2021-06-12 15:31:15,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177388341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:15,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:15,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:15,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81056281] [2021-06-12 15:31:15,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:15,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:15,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:15,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:15,387 INFO L87 Difference]: Start difference. First operand 1499 states and 4242 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:15,431 INFO L93 Difference]: Finished difference Result 1374 states and 3884 transitions. [2021-06-12 15:31:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:15,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:15,432 INFO L225 Difference]: With dead ends: 1374 [2021-06-12 15:31:15,432 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 15:31:15,432 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 15:31:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 15:31:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-06-12 15:31:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 15:31:15,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-12 15:31:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:15,433 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 15:31:15,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 15:31:15,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:31:15,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 15:31:15,433 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (3/5) [2021-06-12 15:31:15,434 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-12 15:31:15,435 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:31:15,435 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:31:15,435 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:31:15,435 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:31:15,435 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:31:15,435 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:31:15,435 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:31:15,435 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 15:31:15,436 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-12 15:31:15,488 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:15,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:15,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:31:15,504 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-12 15:31:15,504 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:31:15,505 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:31:15,505 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:31:15,505 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:31:15,505 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:31:15,505 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:31:15,505 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:31:15,505 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:31:15,505 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork1======== [2021-06-12 15:31:15,506 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 115 transitions, 252 flow [2021-06-12 15:31:15,570 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 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) [2021-06-12 15:31:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-12 15:31:15,577 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:15,577 INFO L472 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] [2021-06-12 15:31:15,577 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:15,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2102570016, now seen corresponding path program 1 times [2021-06-12 15:31:15,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:15,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692594843] [2021-06-12 15:31:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:15,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:15,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692594843] [2021-06-12 15:31:15,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692594843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:15,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:15,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-12 15:31:15,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207642680] [2021-06-12 15:31:15,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-12 15:31:15,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:15,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-12 15:31:15,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-12 15:31:15,602 INFO L87 Difference]: Start difference. First operand has 3267 states, 3263 states have (on average 3.2935948513637756) internal successors, (10747), 3266 states have internal predecessors, (10747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-06-12 15:31:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:15,621 INFO L93 Difference]: Finished difference Result 3267 states and 9607 transitions. [2021-06-12 15:31:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-12 15:31:15,621 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-12 15:31:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:15,631 INFO L225 Difference]: With dead ends: 3267 [2021-06-12 15:31:15,631 INFO L226 Difference]: Without dead ends: 2400 [2021-06-12 15:31:15,632 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-12 15:31:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2021-06-12 15:31:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2400. [2021-06-12 15:31:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2398 states have (on average 2.9520433694745623) internal successors, (7079), 2399 states have internal predecessors, (7079), 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) [2021-06-12 15:31:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 7079 transitions. [2021-06-12 15:31:15,680 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 7079 transitions. Word has length 37 [2021-06-12 15:31:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:15,680 INFO L482 AbstractCegarLoop]: Abstraction has 2400 states and 7079 transitions. [2021-06-12 15:31:15,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-06-12 15:31:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 7079 transitions. [2021-06-12 15:31:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-06-12 15:31:15,682 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:15,682 INFO L472 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] [2021-06-12 15:31:15,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 15:31:15,682 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:15,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:15,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1906086302, now seen corresponding path program 1 times [2021-06-12 15:31:15,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:15,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628880155] [2021-06-12 15:31:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:15,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:15,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628880155] [2021-06-12 15:31:15,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628880155] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:15,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:15,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:31:15,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379211875] [2021-06-12 15:31:15,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:31:15,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:15,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:31:15,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:31:15,703 INFO L87 Difference]: Start difference. First operand 2400 states and 7079 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-06-12 15:31:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:15,721 INFO L93 Difference]: Finished difference Result 2307 states and 6742 transitions. [2021-06-12 15:31:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:31:15,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-06-12 15:31:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:15,727 INFO L225 Difference]: With dead ends: 2307 [2021-06-12 15:31:15,728 INFO L226 Difference]: Without dead ends: 1473 [2021-06-12 15:31:15,728 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:31:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-06-12 15:31:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1473. [2021-06-12 15:31:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 1471 states have (on average 2.946974847042828) internal successors, (4335), 1472 states have internal predecessors, (4335), 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) [2021-06-12 15:31:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 4335 transitions. [2021-06-12 15:31:15,756 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 4335 transitions. Word has length 37 [2021-06-12 15:31:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:15,756 INFO L482 AbstractCegarLoop]: Abstraction has 1473 states and 4335 transitions. [2021-06-12 15:31:15,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2021-06-12 15:31:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 4335 transitions. [2021-06-12 15:31:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:15,759 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:15,759 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:15,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 15:31:15,759 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1025458240, now seen corresponding path program 1 times [2021-06-12 15:31:15,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:15,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671481584] [2021-06-12 15:31:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:15,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:15,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671481584] [2021-06-12 15:31:15,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671481584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:15,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:15,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:15,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664422012] [2021-06-12 15:31:15,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:15,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:15,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:15,783 INFO L87 Difference]: Start difference. First operand 1473 states and 4335 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:15,840 INFO L93 Difference]: Finished difference Result 1737 states and 5068 transitions. [2021-06-12 15:31:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:15,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:15,846 INFO L225 Difference]: With dead ends: 1737 [2021-06-12 15:31:15,846 INFO L226 Difference]: Without dead ends: 1277 [2021-06-12 15:31:15,846 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-06-12 15:31:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1161. [2021-06-12 15:31:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1159 states have (on average 2.8723037100949096) internal successors, (3329), 1160 states have internal predecessors, (3329), 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) [2021-06-12 15:31:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 3329 transitions. [2021-06-12 15:31:15,869 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 3329 transitions. Word has length 48 [2021-06-12 15:31:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:15,869 INFO L482 AbstractCegarLoop]: Abstraction has 1161 states and 3329 transitions. [2021-06-12 15:31:15,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 3329 transitions. [2021-06-12 15:31:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:15,871 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:15,872 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:15,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 15:31:15,872 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:15,872 INFO L82 PathProgramCache]: Analyzing trace with hash 807303894, now seen corresponding path program 2 times [2021-06-12 15:31:15,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:15,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193328153] [2021-06-12 15:31:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:15,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:15,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193328153] [2021-06-12 15:31:15,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193328153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:15,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:15,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:15,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051106827] [2021-06-12 15:31:15,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:15,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:15,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:15,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:15,918 INFO L87 Difference]: Start difference. First operand 1161 states and 3329 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:15,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:15,995 INFO L93 Difference]: Finished difference Result 1565 states and 4411 transitions. [2021-06-12 15:31:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:15,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:15,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:16,000 INFO L225 Difference]: With dead ends: 1565 [2021-06-12 15:31:16,001 INFO L226 Difference]: Without dead ends: 1453 [2021-06-12 15:31:16,001 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-06-12 15:31:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1249. [2021-06-12 15:31:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1247 states have (on average 2.8155573376102647) internal successors, (3511), 1248 states have internal predecessors, (3511), 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) [2021-06-12 15:31:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 3511 transitions. [2021-06-12 15:31:16,028 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 3511 transitions. Word has length 48 [2021-06-12 15:31:16,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:16,029 INFO L482 AbstractCegarLoop]: Abstraction has 1249 states and 3511 transitions. [2021-06-12 15:31:16,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 3511 transitions. [2021-06-12 15:31:16,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:16,031 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:16,031 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:16,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-12 15:31:16,032 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:16,032 INFO L82 PathProgramCache]: Analyzing trace with hash -56329948, now seen corresponding path program 3 times [2021-06-12 15:31:16,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:16,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531193705] [2021-06-12 15:31:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:16,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:16,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531193705] [2021-06-12 15:31:16,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531193705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:16,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:16,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:16,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098654450] [2021-06-12 15:31:16,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:16,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:16,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:16,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:16,070 INFO L87 Difference]: Start difference. First operand 1249 states and 3511 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:16,134 INFO L93 Difference]: Finished difference Result 1693 states and 4704 transitions. [2021-06-12 15:31:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:16,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:16,154 INFO L225 Difference]: With dead ends: 1693 [2021-06-12 15:31:16,154 INFO L226 Difference]: Without dead ends: 1693 [2021-06-12 15:31:16,155 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2021-06-12 15:31:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1421. [2021-06-12 15:31:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1419 states have (on average 2.824524312896406) internal successors, (4008), 1420 states have internal predecessors, (4008), 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) [2021-06-12 15:31:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 4008 transitions. [2021-06-12 15:31:16,184 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 4008 transitions. Word has length 48 [2021-06-12 15:31:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:16,184 INFO L482 AbstractCegarLoop]: Abstraction has 1421 states and 4008 transitions. [2021-06-12 15:31:16,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 4008 transitions. [2021-06-12 15:31:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-12 15:31:16,187 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:31:16,187 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:31:16,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-12 15:31:16,188 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:31:16,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:31:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1764160840, now seen corresponding path program 4 times [2021-06-12 15:31:16,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:31:16,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960475951] [2021-06-12 15:31:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:31:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:31:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:31:16,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:31:16,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960475951] [2021-06-12 15:31:16,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960475951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:31:16,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:31:16,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:31:16,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352990779] [2021-06-12 15:31:16,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:31:16,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:31:16,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:31:16,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:31:16,218 INFO L87 Difference]: Start difference. First operand 1421 states and 4008 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:16,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:31:16,268 INFO L93 Difference]: Finished difference Result 1296 states and 3666 transitions. [2021-06-12 15:31:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-12 15:31:16,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-12 15:31:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:31:16,268 INFO L225 Difference]: With dead ends: 1296 [2021-06-12 15:31:16,268 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 15:31:16,269 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:31:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 15:31:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 15:31:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-06-12 15:31:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 15:31:16,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-06-12 15:31:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:31:16,269 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 15:31:16,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-06-12 15:31:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 15:31:16,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:31:16,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-12 15:31:16,270 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork1 was SAFE (5/5) [2021-06-12 15:31:16,270 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 15:31:16,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 03:31:16 BasicIcfg [2021-06-12 15:31:16,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 15:31:16,274 INFO L168 Benchmark]: Toolchain (without parser) took 3378.04 ms. Allocated memory was 185.6 MB in the beginning and 319.8 MB in the end (delta: 134.2 MB). Free memory was 148.2 MB in the beginning and 173.9 MB in the end (delta: -25.7 MB). Peak memory consumption was 109.6 MB. Max. memory is 8.0 GB. [2021-06-12 15:31:16,274 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 185.6 MB. Free memory was 166.1 MB in the beginning and 166.1 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 15:31:16,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.76 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 147.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-06-12 15:31:16,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.78 ms. Allocated memory is still 185.6 MB. Free memory was 147.0 MB in the beginning and 144.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 15:31:16,275 INFO L168 Benchmark]: Boogie Preprocessor took 18.06 ms. Allocated memory is still 185.6 MB. Free memory was 144.9 MB in the beginning and 143.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 15:31:16,276 INFO L168 Benchmark]: RCFGBuilder took 451.68 ms. Allocated memory is still 185.6 MB. Free memory was 143.3 MB in the beginning and 117.6 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-06-12 15:31:16,277 INFO L168 Benchmark]: TraceAbstraction took 2491.40 ms. Allocated memory was 185.6 MB in the beginning and 319.8 MB in the end (delta: 134.2 MB). Free memory was 117.1 MB in the beginning and 173.9 MB in the end (delta: -56.8 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. [2021-06-12 15:31:16,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 185.6 MB. Free memory was 166.1 MB in the beginning and 166.1 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 382.76 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 147.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.78 ms. Allocated memory is still 185.6 MB. Free memory was 147.0 MB in the beginning and 144.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.06 ms. Allocated memory is still 185.6 MB. Free memory was 144.9 MB in the beginning and 143.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 451.68 ms. Allocated memory is still 185.6 MB. Free memory was 143.3 MB in the beginning and 117.6 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2491.40 ms. Allocated memory was 185.6 MB in the beginning and 319.8 MB in the end (delta: 134.2 MB). Free memory was 117.1 MB in the beginning and 173.9 MB in the end (delta: -56.8 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: 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 for errors in thread instance: thr2 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 174.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 32.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 134.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 97.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 18.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 77.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1251.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 19.9ms, AutomataDifference: 448.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 69.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 683 SDtfs, 363 SDslu, 639 SDs, 0 SdLazy, 205 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 278.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 729 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.5ms SsaConstructionTime, 93.0ms SatisfiabilityAnalysisTime, 190.6ms InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 68.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 15.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 53.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 150 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 765.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 17.7ms, AutomataDifference: 344.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 65.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 697 SDtfs, 343 SDslu, 626 SDs, 0 SdLazy, 211 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 140.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3267occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 154.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 592 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.8ms SsaConstructionTime, 38.0ms SatisfiabilityAnalysisTime, 102.5ms InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...