/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:26:40,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:26:40,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:26:40,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:26:40,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:26:40,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:26:40,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:26:40,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:26:40,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:26:40,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:26:40,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:26:40,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:26:40,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:26:40,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:26:40,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:26:40,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:26:40,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:26:40,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:26:40,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:26:40,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:26:40,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:26:40,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:26:40,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:26:40,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:26:40,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:26:40,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:26:40,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:26:40,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:26:40,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:26:40,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:26:40,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:26:40,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:26:40,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:26:40,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:26:40,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:26:40,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:26:40,335 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-SemanticLbe.epf [2021-03-11 20:26:40,362 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:26:40,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:26:40,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:26:40,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:26:40,365 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:26:40,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:26:40,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:26:40,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:26:40,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:26:40,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:26:40,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:26:40,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:26:40,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:26:40,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:26:40,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:26:40,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:26:40,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:26:40,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:26:40,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:26:40,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:26:40,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:26:40,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:26:40,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:26:40,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:26:40,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:26:40,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:26:40,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:26:40,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:26:40,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:26:40,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:26:40,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:26:40,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:26:40,615 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:26:40,616 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:26:40,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2021-03-11 20:26:40,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2987d4f/607ebeeed956403f8b303d9ad529e6f9/FLAGd010d9721 [2021-03-11 20:26:41,042 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:26:41,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2021-03-11 20:26:41,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2987d4f/607ebeeed956403f8b303d9ad529e6f9/FLAGd010d9721 [2021-03-11 20:26:41,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2987d4f/607ebeeed956403f8b303d9ad529e6f9 [2021-03-11 20:26:41,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:26:41,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:26:41,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:26:41,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:26:41,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:26:41,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25963832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41, skipping insertion in model container [2021-03-11 20:26:41,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:26:41,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:26:41,553 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i[950,963] [2021-03-11 20:26:41,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:26:41,684 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:26:41,699 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i[950,963] [2021-03-11 20:26:41,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:26:41,774 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:26:41,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41 WrapperNode [2021-03-11 20:26:41,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:26:41,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:26:41,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:26:41,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:26:41,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:26:41,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:26:41,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:26:41,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:26:41,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (1/1) ... [2021-03-11 20:26:41,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:26:41,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:26:41,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:26:41,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:26:41,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (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 [2021-03-11 20:26:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:26:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:26:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:26:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:26:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:26:41,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:26:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:26:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:26:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:26:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:26:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:26:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:26:41,881 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:26:42,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:26:42,124 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:26:42,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:26:42 BoogieIcfgContainer [2021-03-11 20:26:42,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:26:42,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:26:42,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:26:42,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:26:42,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:26:41" (1/3) ... [2021-03-11 20:26:42,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0b4e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:26:42, skipping insertion in model container [2021-03-11 20:26:42,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:26:41" (2/3) ... [2021-03-11 20:26:42,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0b4e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:26:42, skipping insertion in model container [2021-03-11 20:26:42,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:26:42" (3/3) ... [2021-03-11 20:26:42,130 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2021-03-11 20:26:42,133 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:26:42,135 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:26:42,135 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:26:42,180 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,180 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,180 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,180 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,181 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,181 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,183 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,189 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,189 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:26:42,196 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:26:42,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 20:26:42,230 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:26:42,230 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:26:42,231 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:26:42,231 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:26:42,231 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:26:42,231 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:26:42,231 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:26:42,232 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:26:42,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 20:26:42,270 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-11 20:26:42,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:26:42,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 20:26:42,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 20:26:42,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-11 20:26:42,277 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:26:42,286 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-11 20:26:42,287 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-11 20:26:42,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-03-11 20:26:42,296 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-03-11 20:26:42,296 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:26:42,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-11 20:26:42,297 INFO L116 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-11 20:26:43,652 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:26:43,848 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:26:43,914 INFO L131 LiptonReduction]: Checked pairs total: 782 [2021-03-11 20:26:43,914 INFO L133 LiptonReduction]: Total number of compositions: 39 [2021-03-11 20:26:43,915 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1640 [2021-03-11 20:26:43,922 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-11 20:26:43,922 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:26:43,922 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:26:43,922 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 20:26:43,923 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:26:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:26:43,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1999328934, now seen corresponding path program 1 times [2021-03-11 20:26:43,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:26:43,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733640670] [2021-03-11 20:26:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:26:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:26:44,047 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:26:44,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:26:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:26:44,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733640670] [2021-03-11 20:26:44,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:26:44,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:26:44,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222138628] [2021-03-11 20:26:44,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:26:44,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:26:44,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:26:44,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:26:44,068 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100 [2021-03-11 20:26:44,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-03-11 20:26:44,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:26:44,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100 [2021-03-11 20:26:44,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:26:44,080 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-11 20:26:44,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:26:44,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 14 events. 1/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 19. Up to 6 conditions per place. [2021-03-11 20:26:44,081 INFO L132 encePairwiseOnDemand]: 97/100 looper letters, 2 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2021-03-11 20:26:44,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 38 flow [2021-03-11 20:26:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:26:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:26:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2021-03-11 20:26:44,089 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-03-11 20:26:44,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2021-03-11 20:26:44,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2021-03-11 20:26:44,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:26:44,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2021-03-11 20:26:44,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2021-03-11 20:26:44,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2021-03-11 20:26:44,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2021-03-11 20:26:44,098 INFO L185 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 230 transitions. [2021-03-11 20:26:44,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 38 flow [2021-03-11 20:26:44,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 36 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:26:44,101 INFO L241 Difference]: Finished difference. Result has 20 places, 12 transitions, 36 flow [2021-03-11 20:26:44,102 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2021-03-11 20:26:44,102 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2021-03-11 20:26:44,103 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2021-03-11 20:26:44,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-03-11 20:26:44,103 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:26:44,103 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:26:44,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:26:44,103 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:26:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:26:44,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1849625077, now seen corresponding path program 1 times [2021-03-11 20:26:44,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:26:44,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647320918] [2021-03-11 20:26:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:26:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:26:44,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:26:44,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:26:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:26:44,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647320918] [2021-03-11 20:26:44,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:26:44,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:26:44,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186166394] [2021-03-11 20:26:44,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:26:44,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:26:44,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:26:44,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:26:44,143 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100 [2021-03-11 20:26:44,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-03-11 20:26:44,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:26:44,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100 [2021-03-11 20:26:44,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:26:44,158 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:26:44,159 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-11 20:26:44,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 2/19 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-11 20:26:44,159 INFO L132 encePairwiseOnDemand]: 96/100 looper letters, 1 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2021-03-11 20:26:44,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 51 flow [2021-03-11 20:26:44,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:26:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:26:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2021-03-11 20:26:44,161 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7675 [2021-03-11 20:26:44,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2021-03-11 20:26:44,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2021-03-11 20:26:44,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:26:44,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2021-03-11 20:26:44,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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) [2021-03-11 20:26:44,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-11 20:26:44,164 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2021-03-11 20:26:44,164 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states and 307 transitions. [2021-03-11 20:26:44,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 51 flow [2021-03-11 20:26:44,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 45 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:26:44,164 INFO L241 Difference]: Finished difference. Result has 23 places, 12 transitions, 46 flow [2021-03-11 20:26:44,164 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2021-03-11 20:26:44,165 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2021-03-11 20:26:44,165 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 46 flow [2021-03-11 20:26:44,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2021-03-11 20:26:44,165 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:26:44,165 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:26:44,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:26:44,165 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:26:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:26:44,166 INFO L82 PathProgramCache]: Analyzing trace with hash -598741736, now seen corresponding path program 1 times [2021-03-11 20:26:44,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:26:44,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916009777] [2021-03-11 20:26:44,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:26:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:26:44,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:26:44,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:26:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:26:44,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916009777] [2021-03-11 20:26:44,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:26:44,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:26:44,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155194108] [2021-03-11 20:26:44,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:26:44,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:26:44,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:26:44,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:26:44,242 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 100 [2021-03-11 20:26:44,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2021-03-11 20:26:44,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:26:44,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 100 [2021-03-11 20:26:44,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:26:44,261 INFO L129 PetriNetUnfolder]: 6/27 cut-off events. [2021-03-11 20:26:44,261 INFO L130 PetriNetUnfolder]: For 31/33 co-relation queries the response was YES. [2021-03-11 20:26:44,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 27 events. 6/27 cut-off events. For 31/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 2 based on Foata normal form. 6/32 useless extension candidates. Maximal degree in co-relation 60. Up to 15 conditions per place. [2021-03-11 20:26:44,262 INFO L132 encePairwiseOnDemand]: 95/100 looper letters, 4 selfloop transitions, 3 changer transitions 5/19 dead transitions. [2021-03-11 20:26:44,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 84 flow [2021-03-11 20:26:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:26:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:26:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2021-03-11 20:26:44,264 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.748 [2021-03-11 20:26:44,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2021-03-11 20:26:44,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2021-03-11 20:26:44,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:26:44,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2021-03-11 20:26:44,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2021-03-11 20:26:44,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2021-03-11 20:26:44,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2021-03-11 20:26:44,267 INFO L185 Difference]: Start difference. First operand has 23 places, 12 transitions, 46 flow. Second operand 5 states and 374 transitions. [2021-03-11 20:26:44,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 84 flow [2021-03-11 20:26:44,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 72 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-11 20:26:44,268 INFO L241 Difference]: Finished difference. Result has 26 places, 14 transitions, 61 flow [2021-03-11 20:26:44,268 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2021-03-11 20:26:44,268 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2021-03-11 20:26:44,268 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 61 flow [2021-03-11 20:26:44,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2021-03-11 20:26:44,268 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:26:44,269 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:26:44,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:26:44,269 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:26:44,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:26:44,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1949546464, now seen corresponding path program 1 times [2021-03-11 20:26:44,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:26:44,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205157449] [2021-03-11 20:26:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:26:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:26:44,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:26:44,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:26:44,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:26:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:26:44,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205157449] [2021-03-11 20:26:44,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:26:44,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:26:44,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110533196] [2021-03-11 20:26:44,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:26:44,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:26:44,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:26:44,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:26:44,305 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 100 [2021-03-11 20:26:44,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 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) [2021-03-11 20:26:44,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:26:44,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 100 [2021-03-11 20:26:44,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:26:44,328 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-03-11 20:26:44,328 INFO L130 PetriNetUnfolder]: For 23/29 co-relation queries the response was YES. [2021-03-11 20:26:44,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 18 events. 2/18 cut-off events. For 23/29 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 6/24 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2021-03-11 20:26:44,328 INFO L132 encePairwiseOnDemand]: 95/100 looper letters, 2 selfloop transitions, 5 changer transitions 3/17 dead transitions. [2021-03-11 20:26:44,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 97 flow [2021-03-11 20:26:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:26:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:26:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2021-03-11 20:26:44,330 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.74 [2021-03-11 20:26:44,330 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 444 transitions. [2021-03-11 20:26:44,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 444 transitions. [2021-03-11 20:26:44,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:26:44,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 444 transitions. [2021-03-11 20:26:44,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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) [2021-03-11 20:26:44,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2021-03-11 20:26:44,332 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2021-03-11 20:26:44,332 INFO L185 Difference]: Start difference. First operand has 26 places, 14 transitions, 61 flow. Second operand 6 states and 444 transitions. [2021-03-11 20:26:44,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 97 flow [2021-03-11 20:26:44,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 84 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-11 20:26:44,333 INFO L241 Difference]: Finished difference. Result has 30 places, 14 transitions, 72 flow [2021-03-11 20:26:44,333 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=14} [2021-03-11 20:26:44,334 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 11 predicate places. [2021-03-11 20:26:44,334 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 14 transitions, 72 flow [2021-03-11 20:26:44,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 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) [2021-03-11 20:26:44,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:26:44,334 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:26:44,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:26:44,334 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:26:44,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:26:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1560964696, now seen corresponding path program 1 times [2021-03-11 20:26:44,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:26:44,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255996838] [2021-03-11 20:26:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:26:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:26:44,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:26:44,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:26:44,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:26:44,357 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:26:44,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:26:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:26:44,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255996838] [2021-03-11 20:26:44,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:26:44,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:26:44,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007722577] [2021-03-11 20:26:44,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:26:44,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:26:44,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:26:44,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:26:44,363 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 100 [2021-03-11 20:26:44,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 14 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2021-03-11 20:26:44,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:26:44,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 100 [2021-03-11 20:26:44,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:26:44,377 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-11 20:26:44,377 INFO L130 PetriNetUnfolder]: For 18/19 co-relation queries the response was YES. [2021-03-11 20:26:44,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 13 events. 1/13 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2021-03-11 20:26:44,377 INFO L132 encePairwiseOnDemand]: 95/100 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-11 20:26:44,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 13 transitions, 70 flow [2021-03-11 20:26:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:26:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:26:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2021-03-11 20:26:44,378 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.72 [2021-03-11 20:26:44,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2021-03-11 20:26:44,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2021-03-11 20:26:44,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:26:44,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2021-03-11 20:26:44,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 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) [2021-03-11 20:26:44,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2021-03-11 20:26:44,381 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2021-03-11 20:26:44,381 INFO L185 Difference]: Start difference. First operand has 30 places, 14 transitions, 72 flow. Second operand 5 states and 360 transitions. [2021-03-11 20:26:44,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 13 transitions, 70 flow [2021-03-11 20:26:44,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 13 transitions, 58 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 20:26:44,382 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-03-11 20:26:44,382 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-03-11 20:26:44,382 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2021-03-11 20:26:44,382 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2021-03-11 20:26:44,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2021-03-11 20:26:44,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:26:44,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:26:44 BasicIcfg [2021-03-11 20:26:44,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:26:44,387 INFO L168 Benchmark]: Toolchain (without parser) took 2962.47 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 234.6 MB in the beginning and 240.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 95.4 MB. Max. memory is 16.0 GB. [2021-03-11 20:26:44,391 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 154.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:26:44,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.45 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 234.0 MB in the beginning and 323.1 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:26:44,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.33 ms. Allocated memory is still 358.6 MB. Free memory was 323.1 MB in the beginning and 321.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:26:44,392 INFO L168 Benchmark]: Boogie Preprocessor took 20.15 ms. Allocated memory is still 358.6 MB. Free memory was 321.0 MB in the beginning and 319.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:26:44,392 INFO L168 Benchmark]: RCFGBuilder took 302.79 ms. Allocated memory is still 358.6 MB. Free memory was 319.6 MB in the beginning and 300.0 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:26:44,394 INFO L168 Benchmark]: TraceAbstraction took 2259.33 ms. Allocated memory is still 358.6 MB. Free memory was 299.3 MB in the beginning and 240.5 MB in the end (delta: 58.8 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:26:44,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 154.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 345.45 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 234.0 MB in the beginning and 323.1 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.33 ms. Allocated memory is still 358.6 MB. Free memory was 323.1 MB in the beginning and 321.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.15 ms. Allocated memory is still 358.6 MB. Free memory was 321.0 MB in the beginning and 319.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 302.79 ms. Allocated memory is still 358.6 MB. Free memory was 319.6 MB in the beginning and 300.0 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2259.33 ms. Allocated memory is still 358.6 MB. Free memory was 299.3 MB in the beginning and 240.5 MB in the end (delta: 58.8 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1626.9ms, 55 PlacesBefore, 19 PlacesAfterwards, 49 TransitionsBefore, 12 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 782 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 486, positive: 434, positive conditional: 0, positive unconditional: 434, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 333, positive: 312, positive conditional: 0, positive unconditional: 312, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 333, positive: 308, positive conditional: 0, positive unconditional: 308, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 486, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 333, unknown conditional: 0, unknown unconditional: 333] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2156.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 137.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1687.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 7 SDslu, 7 SDs, 0 SdLazy, 49 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=4, InterpolantAutomatonStates: 23, 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: 7.0ms SsaConstructionTime, 69.0ms SatisfiabilityAnalysisTime, 162.6ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...