/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:17:05,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:17:05,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:17:05,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:17:05,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:17:05,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:17:05,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:17:05,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:17:05,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:17:05,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:17:05,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:17:05,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:17:05,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:17:05,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:17:05,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:17:05,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:17:05,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:17:05,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:17:05,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:17:05,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:17:05,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:17:05,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:17:05,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:17:05,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:17:05,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:17:05,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:17:05,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:17:05,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:17:05,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:17:05,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:17:05,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:17:05,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:17:05,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:17:05,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:17:05,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:17:05,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:17:05,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:17:05,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:17:05,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:17:05,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:17:05,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:17:05,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 20:17:05,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:17:05,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:17:05,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:17:05,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:17:05,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:17:05,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:17:05,254 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:17:05,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:17:05,254 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:17:05,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:17:05,255 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:17:05,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:17:05,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:17:05,256 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:17:05,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:17:05,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:17:05,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:17:05,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 20:17:05,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:17:05,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:17:05,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:17:05,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:17:05,512 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:17:05,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2022-12-11 20:17:06,421 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:17:06,634 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:17:06,635 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2022-12-11 20:17:06,644 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5d41948/5c71f6eee1384a86ad1d3cfab28ca30d/FLAG8921fbf89 [2022-12-11 20:17:06,653 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5d41948/5c71f6eee1384a86ad1d3cfab28ca30d [2022-12-11 20:17:06,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:17:06,656 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:17:06,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:17:06,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:17:06,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:17:06,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf5d5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06, skipping insertion in model container [2022-12-11 20:17:06,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:17:06,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:17:06,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,834 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3046,3059] [2022-12-11 20:17:06,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:17:06,846 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:17:06,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,861 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:17:06,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:17:06,881 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3046,3059] [2022-12-11 20:17:06,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:17:06,894 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:17:06,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06 WrapperNode [2022-12-11 20:17:06,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:17:06,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:17:06,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:17:06,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:17:06,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,928 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2022-12-11 20:17:06,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:17:06,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:17:06,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:17:06,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:17:06,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:17:06,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:17:06,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:17:06,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:17:06,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (1/1) ... [2022-12-11 20:17:06,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:17:06,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:17:06,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 20:17:07,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 20:17:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:17:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 20:17:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 20:17:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 20:17:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 20:17:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:17:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:17:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:17:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 20:17:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 20:17:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:17:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:17:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 20:17:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:17:07,030 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:17:07,112 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:17:07,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:17:07,269 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:17:07,296 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:17:07,296 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 20:17:07,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:17:07 BoogieIcfgContainer [2022-12-11 20:17:07,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:17:07,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:17:07,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:17:07,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:17:07,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:17:06" (1/3) ... [2022-12-11 20:17:07,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d099c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:17:07, skipping insertion in model container [2022-12-11 20:17:07,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:17:06" (2/3) ... [2022-12-11 20:17:07,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d099c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:17:07, skipping insertion in model container [2022-12-11 20:17:07,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:17:07" (3/3) ... [2022-12-11 20:17:07,304 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2022-12-11 20:17:07,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:17:07,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:17:07,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:17:07,351 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 20:17:07,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 172 flow [2022-12-11 20:17:07,407 INFO L130 PetriNetUnfolder]: 1/76 cut-off events. [2022-12-11 20:17:07,408 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:17:07,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 1/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2022-12-11 20:17:07,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 78 transitions, 172 flow [2022-12-11 20:17:07,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 68 transitions, 148 flow [2022-12-11 20:17:07,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:17:07,428 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@fa0c788, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:17:07,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 20:17:07,445 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-12-11 20:17:07,445 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:17:07,445 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:07,446 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:07,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash -510245836, now seen corresponding path program 1 times [2022-12-11 20:17:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:07,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345777489] [2022-12-11 20:17:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345777489] [2022-12-11 20:17:08,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345777489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:08,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:08,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:17:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107063260] [2022-12-11 20:17:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:08,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:17:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:08,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:17:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:17:08,104 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 78 [2022-12-11 20:17:08,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 148 flow. Second operand has 9 states, 9 states have (on average 58.111111111111114) internal successors, (523), 9 states have internal predecessors, (523), 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) [2022-12-11 20:17:08,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:08,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 78 [2022-12-11 20:17:08,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:08,379 INFO L130 PetriNetUnfolder]: 22/195 cut-off events. [2022-12-11 20:17:08,379 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-11 20:17:08,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 195 events. 22/195 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 696 event pairs, 12 based on Foata normal form. 4/195 useless extension candidates. Maximal degree in co-relation 186. Up to 34 conditions per place. [2022-12-11 20:17:08,382 INFO L137 encePairwiseOnDemand]: 67/78 looper letters, 30 selfloop transitions, 7 changer transitions 15/99 dead transitions. [2022-12-11 20:17:08,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 338 flow [2022-12-11 20:17:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 20:17:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 20:17:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 785 transitions. [2022-12-11 20:17:08,398 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7741617357001972 [2022-12-11 20:17:08,402 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 148 flow. Second operand 13 states and 785 transitions. [2022-12-11 20:17:08,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 338 flow [2022-12-11 20:17:08,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 99 transitions, 314 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 20:17:08,427 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 177 flow [2022-12-11 20:17:08,444 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=177, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2022-12-11 20:17:08,447 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2022-12-11 20:17:08,447 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 177 flow [2022-12-11 20:17:08,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.111111111111114) internal successors, (523), 9 states have internal predecessors, (523), 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) [2022-12-11 20:17:08,447 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:08,447 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:08,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:17:08,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 554452398, now seen corresponding path program 2 times [2022-12-11 20:17:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:08,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033029321] [2022-12-11 20:17:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:08,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033029321] [2022-12-11 20:17:08,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033029321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:08,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:08,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 20:17:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897792538] [2022-12-11 20:17:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:08,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 20:17:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 20:17:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-11 20:17:08,685 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 78 [2022-12-11 20:17:08,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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) [2022-12-11 20:17:08,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:08,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 78 [2022-12-11 20:17:08,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:08,892 INFO L130 PetriNetUnfolder]: 64/395 cut-off events. [2022-12-11 20:17:08,892 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-12-11 20:17:08,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 395 events. 64/395 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2100 event pairs, 6 based on Foata normal form. 3/391 useless extension candidates. Maximal degree in co-relation 621. Up to 38 conditions per place. [2022-12-11 20:17:08,897 INFO L137 encePairwiseOnDemand]: 69/78 looper letters, 32 selfloop transitions, 16 changer transitions 3/103 dead transitions. [2022-12-11 20:17:08,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 103 transitions, 349 flow [2022-12-11 20:17:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:17:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:17:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 574 transitions. [2022-12-11 20:17:08,903 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8176638176638177 [2022-12-11 20:17:08,903 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 177 flow. Second operand 9 states and 574 transitions. [2022-12-11 20:17:08,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 103 transitions, 349 flow [2022-12-11 20:17:08,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 341 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-11 20:17:08,910 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 252 flow [2022-12-11 20:17:08,911 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2022-12-11 20:17:08,913 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2022-12-11 20:17:08,913 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 252 flow [2022-12-11 20:17:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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) [2022-12-11 20:17:08,913 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:08,913 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:08,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 20:17:08,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:08,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1964140530, now seen corresponding path program 3 times [2022-12-11 20:17:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:08,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144860313] [2022-12-11 20:17:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:08,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:09,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:09,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144860313] [2022-12-11 20:17:09,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144860313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:09,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:09,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 20:17:09,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410140300] [2022-12-11 20:17:09,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:09,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 20:17:09,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:09,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 20:17:09,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-11 20:17:09,073 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 78 [2022-12-11 20:17:09,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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) [2022-12-11 20:17:09,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:09,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 78 [2022-12-11 20:17:09,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:09,193 INFO L130 PetriNetUnfolder]: 50/309 cut-off events. [2022-12-11 20:17:09,193 INFO L131 PetriNetUnfolder]: For 114/122 co-relation queries the response was YES. [2022-12-11 20:17:09,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 309 events. 50/309 cut-off events. For 114/122 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1456 event pairs, 8 based on Foata normal form. 11/316 useless extension candidates. Maximal degree in co-relation 319. Up to 38 conditions per place. [2022-12-11 20:17:09,198 INFO L137 encePairwiseOnDemand]: 69/78 looper letters, 27 selfloop transitions, 13 changer transitions 10/102 dead transitions. [2022-12-11 20:17:09,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 102 transitions, 406 flow [2022-12-11 20:17:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:17:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:17:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 572 transitions. [2022-12-11 20:17:09,200 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-12-11 20:17:09,200 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 252 flow. Second operand 9 states and 572 transitions. [2022-12-11 20:17:09,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 102 transitions, 406 flow [2022-12-11 20:17:09,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 102 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-11 20:17:09,206 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 280 flow [2022-12-11 20:17:09,206 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=280, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2022-12-11 20:17:09,207 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2022-12-11 20:17:09,207 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 280 flow [2022-12-11 20:17:09,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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) [2022-12-11 20:17:09,208 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:09,211 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:09,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 20:17:09,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:09,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:09,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1205112018, now seen corresponding path program 4 times [2022-12-11 20:17:09,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457162587] [2022-12-11 20:17:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457162587] [2022-12-11 20:17:09,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457162587] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:09,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:09,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:17:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030028807] [2022-12-11 20:17:09,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:09,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:17:09,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:17:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:17:09,413 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 78 [2022-12-11 20:17:09,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 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) [2022-12-11 20:17:09,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:09,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 78 [2022-12-11 20:17:09,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:09,549 INFO L130 PetriNetUnfolder]: 43/306 cut-off events. [2022-12-11 20:17:09,549 INFO L131 PetriNetUnfolder]: For 304/318 co-relation queries the response was YES. [2022-12-11 20:17:09,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 306 events. 43/306 cut-off events. For 304/318 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1414 event pairs, 6 based on Foata normal form. 17/320 useless extension candidates. Maximal degree in co-relation 433. Up to 29 conditions per place. [2022-12-11 20:17:09,550 INFO L137 encePairwiseOnDemand]: 69/78 looper letters, 28 selfloop transitions, 19 changer transitions 6/105 dead transitions. [2022-12-11 20:17:09,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 105 transitions, 488 flow [2022-12-11 20:17:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:17:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:17:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 631 transitions. [2022-12-11 20:17:09,552 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.808974358974359 [2022-12-11 20:17:09,552 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 280 flow. Second operand 10 states and 631 transitions. [2022-12-11 20:17:09,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 105 transitions, 488 flow [2022-12-11 20:17:09,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 458 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-12-11 20:17:09,557 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 334 flow [2022-12-11 20:17:09,557 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=334, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2022-12-11 20:17:09,558 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-12-11 20:17:09,559 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 334 flow [2022-12-11 20:17:09,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 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) [2022-12-11 20:17:09,559 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:09,559 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:09,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 20:17:09,559 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash 543355308, now seen corresponding path program 5 times [2022-12-11 20:17:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:09,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027518566] [2022-12-11 20:17:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:09,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027518566] [2022-12-11 20:17:09,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027518566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:09,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:09,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:17:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481927744] [2022-12-11 20:17:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:17:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:17:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:17:09,636 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2022-12-11 20:17:09,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-12-11 20:17:09,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:09,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2022-12-11 20:17:09,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:09,666 INFO L130 PetriNetUnfolder]: 21/276 cut-off events. [2022-12-11 20:17:09,667 INFO L131 PetriNetUnfolder]: For 193/195 co-relation queries the response was YES. [2022-12-11 20:17:09,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 276 events. 21/276 cut-off events. For 193/195 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1237 event pairs, 14 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 370. Up to 65 conditions per place. [2022-12-11 20:17:09,668 INFO L137 encePairwiseOnDemand]: 75/78 looper letters, 11 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-12-11 20:17:09,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 86 transitions, 367 flow [2022-12-11 20:17:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:17:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:17:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2022-12-11 20:17:09,669 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8931623931623932 [2022-12-11 20:17:09,669 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 334 flow. Second operand 3 states and 209 transitions. [2022-12-11 20:17:09,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 86 transitions, 367 flow [2022-12-11 20:17:09,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 358 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-11 20:17:09,671 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 335 flow [2022-12-11 20:17:09,672 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2022-12-11 20:17:09,672 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-12-11 20:17:09,672 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 335 flow [2022-12-11 20:17:09,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-12-11 20:17:09,672 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:09,673 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:09,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 20:17:09,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1043354658, now seen corresponding path program 6 times [2022-12-11 20:17:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:09,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514441055] [2022-12-11 20:17:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:09,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:09,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514441055] [2022-12-11 20:17:09,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514441055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:09,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:09,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:17:09,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457447607] [2022-12-11 20:17:09,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:09,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:17:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:09,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:17:09,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:17:09,764 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2022-12-11 20:17:09,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-12-11 20:17:09,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:09,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2022-12-11 20:17:09,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:09,802 INFO L130 PetriNetUnfolder]: 19/259 cut-off events. [2022-12-11 20:17:09,803 INFO L131 PetriNetUnfolder]: For 162/164 co-relation queries the response was YES. [2022-12-11 20:17:09,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 259 events. 19/259 cut-off events. For 162/164 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1140 event pairs, 12 based on Foata normal form. 6/263 useless extension candidates. Maximal degree in co-relation 346. Up to 58 conditions per place. [2022-12-11 20:17:09,804 INFO L137 encePairwiseOnDemand]: 75/78 looper letters, 9 selfloop transitions, 2 changer transitions 3/86 dead transitions. [2022-12-11 20:17:09,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 368 flow [2022-12-11 20:17:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:17:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:17:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2022-12-11 20:17:09,805 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8931623931623932 [2022-12-11 20:17:09,805 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 335 flow. Second operand 3 states and 209 transitions. [2022-12-11 20:17:09,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 368 flow [2022-12-11 20:17:09,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 20:17:09,811 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 328 flow [2022-12-11 20:17:09,811 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2022-12-11 20:17:09,814 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2022-12-11 20:17:09,814 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 328 flow [2022-12-11 20:17:09,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-12-11 20:17:09,815 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:09,815 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:09,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 20:17:09,815 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:09,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1851919922, now seen corresponding path program 7 times [2022-12-11 20:17:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:09,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258759142] [2022-12-11 20:17:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:09,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:09,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258759142] [2022-12-11 20:17:09,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258759142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:09,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:09,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:17:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626197359] [2022-12-11 20:17:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:09,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:17:09,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:09,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:17:09,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:17:09,972 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 78 [2022-12-11 20:17:09,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 328 flow. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 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) [2022-12-11 20:17:09,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:09,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 78 [2022-12-11 20:17:09,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:10,057 INFO L130 PetriNetUnfolder]: 14/145 cut-off events. [2022-12-11 20:17:10,058 INFO L131 PetriNetUnfolder]: For 100/102 co-relation queries the response was YES. [2022-12-11 20:17:10,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 145 events. 14/145 cut-off events. For 100/102 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 350 event pairs, 7 based on Foata normal form. 5/147 useless extension candidates. Maximal degree in co-relation 258. Up to 16 conditions per place. [2022-12-11 20:17:10,059 INFO L137 encePairwiseOnDemand]: 68/78 looper letters, 18 selfloop transitions, 13 changer transitions 10/89 dead transitions. [2022-12-11 20:17:10,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 89 transitions, 403 flow [2022-12-11 20:17:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 20:17:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 20:17:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 618 transitions. [2022-12-11 20:17:10,061 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7923076923076923 [2022-12-11 20:17:10,061 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 328 flow. Second operand 10 states and 618 transitions. [2022-12-11 20:17:10,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 89 transitions, 403 flow [2022-12-11 20:17:10,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 89 transitions, 386 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-11 20:17:10,064 INFO L231 Difference]: Finished difference. Result has 105 places, 72 transitions, 264 flow [2022-12-11 20:17:10,065 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=105, PETRI_TRANSITIONS=72} [2022-12-11 20:17:10,066 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2022-12-11 20:17:10,066 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 72 transitions, 264 flow [2022-12-11 20:17:10,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 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) [2022-12-11 20:17:10,066 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:17:10,066 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:17:10,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 20:17:10,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:17:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:17:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash -589618742, now seen corresponding path program 8 times [2022-12-11 20:17:10,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:17:10,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372160623] [2022-12-11 20:17:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:17:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:17:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:17:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:17:10,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:17:10,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372160623] [2022-12-11 20:17:10,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372160623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:17:10,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:17:10,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-11 20:17:10,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22129386] [2022-12-11 20:17:10,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:17:10,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-11 20:17:10,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:17:10,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-11 20:17:10,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:17:10,214 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 78 [2022-12-11 20:17:10,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 72 transitions, 264 flow. Second operand has 9 states, 9 states have (on average 58.111111111111114) internal successors, (523), 9 states have internal predecessors, (523), 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) [2022-12-11 20:17:10,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:17:10,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 78 [2022-12-11 20:17:10,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:17:10,303 INFO L130 PetriNetUnfolder]: 6/104 cut-off events. [2022-12-11 20:17:10,304 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-12-11 20:17:10,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 104 events. 6/104 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 4 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 163. Up to 14 conditions per place. [2022-12-11 20:17:10,304 INFO L137 encePairwiseOnDemand]: 70/78 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2022-12-11 20:17:10,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 70 transitions, 300 flow [2022-12-11 20:17:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:17:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:17:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 524 transitions. [2022-12-11 20:17:10,306 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7464387464387464 [2022-12-11 20:17:10,306 INFO L175 Difference]: Start difference. First operand has 105 places, 72 transitions, 264 flow. Second operand 9 states and 524 transitions. [2022-12-11 20:17:10,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 70 transitions, 300 flow [2022-12-11 20:17:10,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 70 transitions, 242 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-12-11 20:17:10,307 INFO L231 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2022-12-11 20:17:10,307 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2022-12-11 20:17:10,309 INFO L295 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2022-12-11 20:17:10,310 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2022-12-11 20:17:10,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.111111111111114) internal successors, (523), 9 states have internal predecessors, (523), 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) [2022-12-11 20:17:10,312 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 20:17:10,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 20:17:10,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 20:17:10,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 20:17:10,313 INFO L445 BasicCegarLoop]: Path program histogram: [8] [2022-12-11 20:17:10,315 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:17:10,315 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:17:10,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:17:10 BasicIcfg [2022-12-11 20:17:10,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:17:10,323 INFO L158 Benchmark]: Toolchain (without parser) took 3665.27ms. Allocated memory was 190.8MB in the beginning and 233.8MB in the end (delta: 43.0MB). Free memory was 167.0MB in the beginning and 188.4MB in the end (delta: -21.4MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. [2022-12-11 20:17:10,323 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory was 167.4MB in the beginning and 167.3MB in the end (delta: 88.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:17:10,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.76ms. Allocated memory is still 190.8MB. Free memory was 167.0MB in the beginning and 151.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-11 20:17:10,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.85ms. Allocated memory is still 190.8MB. Free memory was 151.8MB in the beginning and 150.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:17:10,324 INFO L158 Benchmark]: Boogie Preprocessor took 27.13ms. Allocated memory is still 190.8MB. Free memory was 150.3MB in the beginning and 149.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 20:17:10,324 INFO L158 Benchmark]: RCFGBuilder took 340.83ms. Allocated memory is still 190.8MB. Free memory was 148.7MB in the beginning and 133.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-11 20:17:10,325 INFO L158 Benchmark]: TraceAbstraction took 3021.03ms. Allocated memory was 190.8MB in the beginning and 233.8MB in the end (delta: 43.0MB). Free memory was 131.9MB in the beginning and 188.4MB in the end (delta: -56.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:17:10,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory was 167.4MB in the beginning and 167.3MB in the end (delta: 88.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.76ms. Allocated memory is still 190.8MB. Free memory was 167.0MB in the beginning and 151.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.85ms. Allocated memory is still 190.8MB. Free memory was 151.8MB in the beginning and 150.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.13ms. Allocated memory is still 190.8MB. Free memory was 150.3MB in the beginning and 149.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 340.83ms. Allocated memory is still 190.8MB. Free memory was 148.7MB in the beginning and 133.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3021.03ms. Allocated memory was 190.8MB in the beginning and 233.8MB in the end (delta: 43.0MB). Free memory was 131.9MB in the beginning and 188.4MB in the end (delta: -56.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 116]: 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 with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 305 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 305 mSDsluCounter, 198 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 705 IncrementalHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 63 mSDtfsCounter, 705 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 528 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 1465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 20:17:10,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...