/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:28:12,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:28:12,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:28:12,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:28:12,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:28:12,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:28:12,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:28:12,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:28:12,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:28:12,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:28:12,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:28:12,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:28:12,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:28:12,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:28:12,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:28:12,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:28:12,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:28:12,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:28:12,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:28:12,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:28:12,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:28:12,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:28:12,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:28:12,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:28:12,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:28:12,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:28:12,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:28:12,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:28:12,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:28:12,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:28:12,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:28:12,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:28:12,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:28:12,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:28:12,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:28:12,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:28:12,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:28:12,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:28:12,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:28:12,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:28:12,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:28:12,863 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-RepeatedVariableLbe.epf [2021-03-25 05:28:12,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:28:12,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:28:12,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:28:12,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:28:12,884 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:28:12,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:28:12,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:28:12,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:28:12,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:28:12,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:28:12,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:28:12,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:28:12,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:28:12,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:28:12,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:28:12,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:28:12,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:28:12,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:28:12,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:28:12,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:28:12,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:28:12,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:28:12,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:28:12,887 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:28:13,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:28:13,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:28:13,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:28:13,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:28:13,198 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:28:13,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-03-25 05:28:13,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ca653d2/0d6cac4c3fef4c5fb93b99518a562bb4/FLAGf32b18cc6 [2021-03-25 05:28:13,895 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:28:13,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2021-03-25 05:28:13,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ca653d2/0d6cac4c3fef4c5fb93b99518a562bb4/FLAGf32b18cc6 [2021-03-25 05:28:14,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ca653d2/0d6cac4c3fef4c5fb93b99518a562bb4 [2021-03-25 05:28:14,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:28:14,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:28:14,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:28:14,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:28:14,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:28:14,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:28:14" (1/1) ... [2021-03-25 05:28:14,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3200a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:14, skipping insertion in model container [2021-03-25 05:28:14,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:28:14" (1/1) ... [2021-03-25 05:28:14,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:28:14,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:28:14,715 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2021-03-25 05:28:14,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:28:14,734 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:28:14,765 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2021-03-25 05:28:14,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:28:15,025 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:28:15,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15 WrapperNode [2021-03-25 05:28:15,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:28:15,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:28:15,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:28:15,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:28:15,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:28:15,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:28:15,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:28:15,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:28:15,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... [2021-03-25 05:28:15,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:28:15,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:28:15,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:28:15,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:28:15,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:28:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:28:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:28:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:28:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 05:28:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 05:28:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-25 05:28:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:28:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:28:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:28:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 05:28:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 05:28:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:28:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:28:15,224 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:28:15,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:28:15,719 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-25 05:28:15,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:28:15 BoogieIcfgContainer [2021-03-25 05:28:15,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:28:15,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:28:15,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:28:15,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:28:15,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:28:14" (1/3) ... [2021-03-25 05:28:15,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37842a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:28:15, skipping insertion in model container [2021-03-25 05:28:15,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:28:15" (2/3) ... [2021-03-25 05:28:15,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37842a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:28:15, skipping insertion in model container [2021-03-25 05:28:15,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:28:15" (3/3) ... [2021-03-25 05:28:15,727 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2021-03-25 05:28:15,732 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:28:15,735 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-25 05:28:15,736 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:28:15,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,765 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,765 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,765 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,765 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,769 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,769 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,769 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:28:15,774 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-25 05:28:15,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 05:28:15,817 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:28:15,817 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:28:15,817 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:28:15,818 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:28:15,818 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:28:15,818 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:28:15,818 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:28:15,818 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:28:15,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-03-25 05:28:15,871 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2021-03-25 05:28:15,871 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:28:15,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 4/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2021-03-25 05:28:15,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 87 transitions, 182 flow [2021-03-25 05:28:15,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2021-03-25 05:28:15,892 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:28:15,899 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2021-03-25 05:28:15,904 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2021-03-25 05:28:15,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2021-03-25 05:28:15,926 INFO L129 PetriNetUnfolder]: 2/86 cut-off events. [2021-03-25 05:28:15,926 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:28:15,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 86 events. 2/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:28:15,929 INFO L142 LiptonReduction]: Number of co-enabled transitions 168 [2021-03-25 05:28:17,632 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-03-25 05:28:17,831 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-03-25 05:28:18,182 INFO L154 LiptonReduction]: Checked pairs total: 183 [2021-03-25 05:28:18,183 INFO L156 LiptonReduction]: Total number of compositions: 59 [2021-03-25 05:28:18,185 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2294 [2021-03-25 05:28:18,194 INFO L129 PetriNetUnfolder]: 1/6 cut-off events. [2021-03-25 05:28:18,194 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:28:18,194 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:28:18,195 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 05:28:18,195 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:28:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:28:18,199 INFO L82 PathProgramCache]: Analyzing trace with hash 9813047, now seen corresponding path program 1 times [2021-03-25 05:28:18,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:28:18,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122821031] [2021-03-25 05:28:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:28:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:28:18,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:28:18,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:28:18,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:28:18,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:28:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:28:18,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122821031] [2021-03-25 05:28:18,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:28:18,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:28:18,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005492810] [2021-03-25 05:28:18,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:28:18,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:28:18,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:28:18,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:28:18,477 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 146 [2021-03-25 05:28:18,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:18,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:28:18,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 146 [2021-03-25 05:28:18,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:28:18,515 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:28:18,516 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:28:18,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 20 events. 0/20 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:28:18,517 INFO L132 encePairwiseOnDemand]: 136/146 looper letters, 1 selfloop transitions, 3 changer transitions 6/20 dead transitions. [2021-03-25 05:28:18,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 62 flow [2021-03-25 05:28:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:28:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:28:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2021-03-25 05:28:18,527 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8036529680365296 [2021-03-25 05:28:18,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2021-03-25 05:28:18,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2021-03-25 05:28:18,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:28:18,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2021-03-25 05:28:18,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:18,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:18,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:18,541 INFO L185 Difference]: Start difference. First operand has 27 places, 26 transitions, 58 flow. Second operand 3 states and 352 transitions. [2021-03-25 05:28:18,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 62 flow [2021-03-25 05:28:18,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:28:18,544 INFO L241 Difference]: Finished difference. Result has 24 places, 14 transitions, 35 flow [2021-03-25 05:28:18,546 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2021-03-25 05:28:18,547 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2021-03-25 05:28:18,547 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:28:18,547 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 14 transitions, 35 flow [2021-03-25 05:28:18,547 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 14 transitions, 35 flow [2021-03-25 05:28:18,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 14 transitions, 35 flow [2021-03-25 05:28:18,549 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 05:28:18,549 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:28:18,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 14 events. 0/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:28:18,550 INFO L142 LiptonReduction]: Number of co-enabled transitions 12 [2021-03-25 05:28:19,100 INFO L154 LiptonReduction]: Checked pairs total: 16 [2021-03-25 05:28:19,101 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 05:28:19,101 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 554 [2021-03-25 05:28:19,102 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 23 flow [2021-03-25 05:28:19,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:19,102 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:28:19,102 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:28:19,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:28:19,103 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:28:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:28:19,103 INFO L82 PathProgramCache]: Analyzing trace with hash 281236572, now seen corresponding path program 1 times [2021-03-25 05:28:19,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:28:19,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132181038] [2021-03-25 05:28:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:28:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:28:19,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:28:19,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:28:19,181 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-03-25 05:28:19,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:28:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:28:19,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132181038] [2021-03-25 05:28:19,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:28:19,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:28:19,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769086977] [2021-03-25 05:28:19,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:28:19,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:28:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:28:19,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:28:19,187 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 152 [2021-03-25 05:28:19,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:19,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:28:19,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 152 [2021-03-25 05:28:19,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:28:19,197 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 05:28:19,198 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:28:19,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 2 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 11. Up to 10 conditions per place. [2021-03-25 05:28:19,198 INFO L132 encePairwiseOnDemand]: 151/152 looper letters, 5 selfloop transitions, 0 changer transitions 0/7 dead transitions. [2021-03-25 05:28:19,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 29 flow [2021-03-25 05:28:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 05:28:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 05:28:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 220 transitions. [2021-03-25 05:28:19,200 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2021-03-25 05:28:19,200 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 220 transitions. [2021-03-25 05:28:19,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 220 transitions. [2021-03-25 05:28:19,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:28:19,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 220 transitions. [2021-03-25 05:28:19,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:19,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:19,202 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:19,202 INFO L185 Difference]: Start difference. First operand has 12 places, 8 transitions, 23 flow. Second operand 2 states and 220 transitions. [2021-03-25 05:28:19,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 29 flow [2021-03-25 05:28:19,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 25 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:28:19,203 INFO L241 Difference]: Finished difference. Result has 10 places, 7 transitions, 15 flow [2021-03-25 05:28:19,203 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=15, PETRI_PLACES=10, PETRI_TRANSITIONS=7} [2021-03-25 05:28:19,204 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -17 predicate places. [2021-03-25 05:28:19,204 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:28:19,204 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 10 places, 7 transitions, 15 flow [2021-03-25 05:28:19,204 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 10 places, 7 transitions, 15 flow [2021-03-25 05:28:19,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 7 transitions, 15 flow [2021-03-25 05:28:19,206 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 05:28:19,206 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:28:19,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 05:28:19,206 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 05:28:19,407 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-25 05:28:19,524 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-25 05:28:19,733 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-03-25 05:28:19,851 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-03-25 05:28:20,003 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-25 05:28:20,119 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-25 05:28:20,120 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 05:28:20,120 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:28:20,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 917 [2021-03-25 05:28:20,121 INFO L480 AbstractCegarLoop]: Abstraction has has 7 places, 5 transitions, 11 flow [2021-03-25 05:28:20,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:20,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:28:20,122 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 05:28:20,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:28:20,122 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:28:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:28:20,122 INFO L82 PathProgramCache]: Analyzing trace with hash 966651682, now seen corresponding path program 1 times [2021-03-25 05:28:20,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:28:20,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502437530] [2021-03-25 05:28:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:28:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:28:20,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:28:20,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:28:20,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:28:20,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:28:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:28:20,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502437530] [2021-03-25 05:28:20,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:28:20,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:28:20,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291026534] [2021-03-25 05:28:20,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:28:20,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:28:20,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:28:20,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:28:20,207 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 154 [2021-03-25 05:28:20,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:20,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:28:20,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 154 [2021-03-25 05:28:20,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:28:20,221 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 05:28:20,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:28:20,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:28:20,221 INFO L132 encePairwiseOnDemand]: 151/154 looper letters, 2 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2021-03-25 05:28:20,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 6 transitions, 23 flow [2021-03-25 05:28:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:28:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:28:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2021-03-25 05:28:20,226 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7077922077922078 [2021-03-25 05:28:20,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2021-03-25 05:28:20,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2021-03-25 05:28:20,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:28:20,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2021-03-25 05:28:20,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:20,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:20,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:20,232 INFO L185 Difference]: Start difference. First operand has 7 places, 5 transitions, 11 flow. Second operand 3 states and 327 transitions. [2021-03-25 05:28:20,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 6 transitions, 23 flow [2021-03-25 05:28:20,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 6 transitions, 23 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:28:20,235 INFO L241 Difference]: Finished difference. Result has 10 places, 5 transitions, 19 flow [2021-03-25 05:28:20,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2021-03-25 05:28:20,238 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -17 predicate places. [2021-03-25 05:28:20,239 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:28:20,239 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 10 places, 5 transitions, 19 flow [2021-03-25 05:28:20,239 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 10 places, 5 transitions, 19 flow [2021-03-25 05:28:20,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 10 places, 5 transitions, 19 flow [2021-03-25 05:28:20,240 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 05:28:20,240 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:28:20,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 5 events. 0/5 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:28:20,241 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:28:20,241 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:28:20,241 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:28:20,241 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 05:28:20,242 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 19 flow [2021-03-25 05:28:20,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:28:20,242 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:28:20,242 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-25 05:28:20,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:28:20,242 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:28:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:28:20,243 INFO L82 PathProgramCache]: Analyzing trace with hash 310025996, now seen corresponding path program 1 times [2021-03-25 05:28:20,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:28:20,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602711485] [2021-03-25 05:28:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:28:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:28:20,301 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:28:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:28:20,316 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:28:20,343 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 05:28:20,347 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 05:28:20,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:28:20,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:28:20 BasicIcfg [2021-03-25 05:28:20,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:28:20,374 INFO L168 Benchmark]: Toolchain (without parser) took 6226.86 ms. Allocated memory was 255.9 MB in the beginning and 446.7 MB in the end (delta: 190.8 MB). Free memory was 233.8 MB in the beginning and 361.4 MB in the end (delta: -127.6 MB). Peak memory consumption was 64.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:28:20,374 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 255.9 MB. Free memory is still 238.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:28:20,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 882.35 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 233.4 MB in the beginning and 312.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:28:20,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.97 ms. Allocated memory is still 371.2 MB. Free memory was 312.6 MB in the beginning and 309.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:28:20,379 INFO L168 Benchmark]: Boogie Preprocessor took 56.27 ms. Allocated memory is still 371.2 MB. Free memory was 309.4 MB in the beginning and 307.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:28:20,379 INFO L168 Benchmark]: RCFGBuilder took 555.88 ms. Allocated memory is still 371.2 MB. Free memory was 307.3 MB in the beginning and 324.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:28:20,379 INFO L168 Benchmark]: TraceAbstraction took 4649.59 ms. Allocated memory was 371.2 MB in the beginning and 446.7 MB in the end (delta: 75.5 MB). Free memory was 324.8 MB in the beginning and 361.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:28:20,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 255.9 MB. Free memory is still 238.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 882.35 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 233.4 MB in the beginning and 312.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 77.97 ms. Allocated memory is still 371.2 MB. Free memory was 312.6 MB in the beginning and 309.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 56.27 ms. Allocated memory is still 371.2 MB. Free memory was 309.4 MB in the beginning and 307.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 555.88 ms. Allocated memory is still 371.2 MB. Free memory was 307.3 MB in the beginning and 324.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4649.59 ms. Allocated memory was 371.2 MB in the beginning and 446.7 MB in the end (delta: 75.5 MB). Free memory was 324.8 MB in the beginning and 361.4 MB in the end (delta: -36.6 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2279.4ms, 77 PlacesBefore, 27 PlacesAfterwards, 76 TransitionsBefore, 26 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, 183 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 171, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 96, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 96, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 171, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 96, unknown conditional: 0, unknown unconditional: 96] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 553.8ms, 24 PlacesBefore, 12 PlacesAfterwards, 14 TransitionsBefore, 8 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 16 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 916.3ms, 10 PlacesBefore, 7 PlacesAfterwards, 7 TransitionsBefore, 5 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1ms, 10 PlacesBefore, 10 PlacesAfterwards, 5 TransitionsBefore, 5 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={9:0}, pdev=1, t1={6:0}] [L1713] 0 return 0; [L1734] COND FALSE 0 !(module_init()!=0) [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={9:0}, pdev=4, t1={6:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={9:0}, pdev=6, t1={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4534.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 127.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2374.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 14 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.1ms SsaConstructionTime, 92.2ms SatisfiabilityAnalysisTime, 225.3ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...