/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 10:59:29,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 10:59:29,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 10:59:29,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 10:59:29,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 10:59:29,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 10:59:29,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 10:59:29,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 10:59:29,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 10:59:29,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 10:59:29,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 10:59:29,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 10:59:29,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 10:59:29,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 10:59:29,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 10:59:29,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 10:59:29,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 10:59:29,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 10:59:29,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 10:59:29,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 10:59:29,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 10:59:29,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 10:59:29,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 10:59:29,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 10:59:29,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 10:59:29,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 10:59:29,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 10:59:29,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 10:59:29,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 10:59:29,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 10:59:29,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 10:59:29,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 10:59:29,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 10:59:29,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 10:59:29,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 10:59:29,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 10:59:29,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 10:59:29,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 10:59:29,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 10:59:29,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 10:59:29,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 10:59:29,320 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-VariableLbe.epf [2021-03-24 10:59:29,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 10:59:29,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 10:59:29,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 10:59:29,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 10:59:29,350 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 10:59:29,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 10:59:29,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 10:59:29,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 10:59:29,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 10:59:29,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 10:59:29,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 10:59:29,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:59:29,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 10:59:29,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 10:59:29,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 10:59:29,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 10:59:29,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 10:59:29,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 10:59:29,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 10:59:29,624 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 10:59:29,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2021-03-24 10:59:29,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f0b8552/21ef335203cf404da0d3d73bfd408687/FLAG2b11fe9a5 [2021-03-24 10:59:30,093 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 10:59:30,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2021-03-24 10:59:30,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f0b8552/21ef335203cf404da0d3d73bfd408687/FLAG2b11fe9a5 [2021-03-24 10:59:30,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f0b8552/21ef335203cf404da0d3d73bfd408687 [2021-03-24 10:59:30,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 10:59:30,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 10:59:30,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 10:59:30,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 10:59:30,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 10:59:30,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2ad63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30, skipping insertion in model container [2021-03-24 10:59:30,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 10:59:30,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 10:59:30,308 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/safe000_tso.opt.i[949,962] [2021-03-24 10:59:30,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:59:30,394 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 10:59:30,400 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/safe000_tso.opt.i[949,962] [2021-03-24 10:59:30,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:59:30,448 INFO L208 MainTranslator]: Completed translation [2021-03-24 10:59:30,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30 WrapperNode [2021-03-24 10:59:30,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 10:59:30,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 10:59:30,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 10:59:30,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 10:59:30,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 10:59:30,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 10:59:30,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 10:59:30,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 10:59:30,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (1/1) ... [2021-03-24 10:59:30,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 10:59:30,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 10:59:30,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 10:59:30,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 10:59:30,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (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 [2021-03-24 10:59:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 10:59:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 10:59:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 10:59:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 10:59:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 10:59:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 10:59:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 10:59:30,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 10:59:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 10:59:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 10:59:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 10:59:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 10:59:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 10:59:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 10:59:30,537 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 10:59:30,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 10:59:30,781 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 10:59:30,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:59:30 BoogieIcfgContainer [2021-03-24 10:59:30,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 10:59:30,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 10:59:30,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 10:59:30,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 10:59:30,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:59:30" (1/3) ... [2021-03-24 10:59:30,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6b352d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:59:30, skipping insertion in model container [2021-03-24 10:59:30,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:59:30" (2/3) ... [2021-03-24 10:59:30,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6b352d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:59:30, skipping insertion in model container [2021-03-24 10:59:30,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:59:30" (3/3) ... [2021-03-24 10:59:30,786 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2021-03-24 10:59:30,790 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 10:59:30,792 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 10:59:30,793 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 10:59:30,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,810 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,811 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,812 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,813 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:59:30,822 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:59:30,833 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 10:59:30,851 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:59:30,851 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:59:30,851 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:59:30,851 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:59:30,852 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:59:30,852 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:59:30,852 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:59:30,852 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:59:30,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 10:59:30,901 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 10:59:30,902 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:30,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 10:59:30,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 10:59:30,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:30,910 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:59:30,915 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:30,916 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:30,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 10:59:30,925 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 10:59:30,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:30,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 10:59:30,927 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 10:59:32,145 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 10:59:32,146 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 10:59:32,147 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1238 [2021-03-24 10:59:32,157 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 10:59:32,157 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:32,157 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:32,158 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:32,158 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-24 10:59:32,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:32,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159299959] [2021-03-24 10:59:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:32,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:32,313 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:32,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:32,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:32,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159299959] [2021-03-24 10:59:32,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:32,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:59:32,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379304265] [2021-03-24 10:59:32,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:32,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:32,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:32,349 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:32,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:32,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:32,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:32,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:32,446 INFO L129 PetriNetUnfolder]: 78/200 cut-off events. [2021-03-24 10:59:32,446 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:59:32,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 200 events. 78/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 959 event pairs, 17 based on Foata normal form. 23/216 useless extension candidates. Maximal degree in co-relation 350. Up to 58 conditions per place. [2021-03-24 10:59:32,450 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 6 changer transitions 15/45 dead transitions. [2021-03-24 10:59:32,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 165 flow [2021-03-24 10:59:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:59:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:59:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-24 10:59:32,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7598522167487685 [2021-03-24 10:59:32,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-24 10:59:32,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-24 10:59:32,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:32,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-24 10:59:32,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 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) [2021-03-24 10:59:32,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:32,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:32,481 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 617 transitions. [2021-03-24 10:59:32,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 165 flow [2021-03-24 10:59:32,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 10:59:32,484 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-24 10:59:32,485 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-24 10:59:32,486 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 10:59:32,486 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 106 flow [2021-03-24 10:59:32,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:59:32,486 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:32,486 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:32,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 10:59:32,487 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1038676965, now seen corresponding path program 1 times [2021-03-24 10:59:32,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:32,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336135725] [2021-03-24 10:59:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:32,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:32,564 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:32,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:32,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:32,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336135725] [2021-03-24 10:59:32,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:32,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:59:32,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964808296] [2021-03-24 10:59:32,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:32,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:32,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:32,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:32,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2021-03-24 10:59:32,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:32,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:32,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:32,655 INFO L129 PetriNetUnfolder]: 39/130 cut-off events. [2021-03-24 10:59:32,655 INFO L130 PetriNetUnfolder]: For 211/260 co-relation queries the response was YES. [2021-03-24 10:59:32,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 130 events. 39/130 cut-off events. For 211/260 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 532 event pairs, 1 based on Foata normal form. 13/137 useless extension candidates. Maximal degree in co-relation 410. Up to 48 conditions per place. [2021-03-24 10:59:32,658 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 10 changer transitions 11/45 dead transitions. [2021-03-24 10:59:32,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 294 flow [2021-03-24 10:59:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:59:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:59:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-03-24 10:59:32,661 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7524630541871922 [2021-03-24 10:59:32,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-03-24 10:59:32,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-03-24 10:59:32,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:32,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-03-24 10:59:32,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 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) [2021-03-24 10:59:32,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:32,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:32,664 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 106 flow. Second operand 7 states and 611 transitions. [2021-03-24 10:59:32,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 294 flow [2021-03-24 10:59:32,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 286 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 10:59:32,668 INFO L241 Difference]: Finished difference. Result has 47 places, 30 transitions, 191 flow [2021-03-24 10:59:32,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2021-03-24 10:59:32,668 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2021-03-24 10:59:32,669 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 191 flow [2021-03-24 10:59:32,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2021-03-24 10:59:32,669 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:32,669 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:32,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 10:59:32,669 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:32,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2143204211, now seen corresponding path program 1 times [2021-03-24 10:59:32,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:32,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986870210] [2021-03-24 10:59:32,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:32,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:32,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:32,738 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:32,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:32,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:32,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986870210] [2021-03-24 10:59:32,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:32,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:59:32,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694460876] [2021-03-24 10:59:32,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:32,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:32,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:32,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:32,754 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:32,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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) [2021-03-24 10:59:32,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:32,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:32,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:32,814 INFO L129 PetriNetUnfolder]: 26/108 cut-off events. [2021-03-24 10:59:32,815 INFO L130 PetriNetUnfolder]: For 366/429 co-relation queries the response was YES. [2021-03-24 10:59:32,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 108 events. 26/108 cut-off events. For 366/429 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 441 event pairs, 1 based on Foata normal form. 11/116 useless extension candidates. Maximal degree in co-relation 414. Up to 38 conditions per place. [2021-03-24 10:59:32,816 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 14 selfloop transitions, 16 changer transitions 7/49 dead transitions. [2021-03-24 10:59:32,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 438 flow [2021-03-24 10:59:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:59:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:59:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2021-03-24 10:59:32,818 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-24 10:59:32,818 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2021-03-24 10:59:32,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2021-03-24 10:59:32,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:32,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2021-03-24 10:59:32,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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) [2021-03-24 10:59:32,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:32,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:32,824 INFO L185 Difference]: Start difference. First operand has 47 places, 30 transitions, 191 flow. Second operand 7 states and 609 transitions. [2021-03-24 10:59:32,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 438 flow [2021-03-24 10:59:32,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 417 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-24 10:59:32,828 INFO L241 Difference]: Finished difference. Result has 53 places, 38 transitions, 335 flow [2021-03-24 10:59:32,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2021-03-24 10:59:32,829 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-24 10:59:32,829 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 335 flow [2021-03-24 10:59:32,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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) [2021-03-24 10:59:32,829 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:32,829 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:32,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 10:59:32,829 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1931657701, now seen corresponding path program 1 times [2021-03-24 10:59:32,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:32,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367508805] [2021-03-24 10:59:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:32,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:32,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:32,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:32,881 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:32,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:32,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:32,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367508805] [2021-03-24 10:59:32,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:32,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 10:59:32,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607594264] [2021-03-24 10:59:32,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 10:59:32,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 10:59:32,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 10:59:32,899 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:32,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2021-03-24 10:59:32,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:32,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:32,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:32,945 INFO L129 PetriNetUnfolder]: 23/108 cut-off events. [2021-03-24 10:59:32,945 INFO L130 PetriNetUnfolder]: For 421/489 co-relation queries the response was YES. [2021-03-24 10:59:32,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 108 events. 23/108 cut-off events. For 421/489 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 462 event pairs, 1 based on Foata normal form. 8/113 useless extension candidates. Maximal degree in co-relation 480. Up to 36 conditions per place. [2021-03-24 10:59:32,946 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 12 changer transitions 12/48 dead transitions. [2021-03-24 10:59:32,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 511 flow [2021-03-24 10:59:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 10:59:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 10:59:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 522 transitions. [2021-03-24 10:59:32,948 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-24 10:59:32,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 522 transitions. [2021-03-24 10:59:32,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 522 transitions. [2021-03-24 10:59:32,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:32,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 522 transitions. [2021-03-24 10:59:32,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2021-03-24 10:59:32,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 10:59:32,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 10:59:32,950 INFO L185 Difference]: Start difference. First operand has 53 places, 38 transitions, 335 flow. Second operand 6 states and 522 transitions. [2021-03-24 10:59:32,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 511 flow [2021-03-24 10:59:32,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 485 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-24 10:59:32,953 INFO L241 Difference]: Finished difference. Result has 52 places, 32 transitions, 282 flow [2021-03-24 10:59:32,953 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2021-03-24 10:59:32,954 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-24 10:59:32,954 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 282 flow [2021-03-24 10:59:32,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2021-03-24 10:59:32,954 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:32,954 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:32,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 10:59:32,954 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:32,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:32,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1991076331, now seen corresponding path program 2 times [2021-03-24 10:59:32,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:32,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303239607] [2021-03-24 10:59:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:32,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:32,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:32,999 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:32,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:33,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:33,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303239607] [2021-03-24 10:59:33,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:33,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:59:33,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513175838] [2021-03-24 10:59:33,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:33,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:33,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:33,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:33,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:33,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2021-03-24 10:59:33,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:33,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:33,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:33,064 INFO L129 PetriNetUnfolder]: 11/67 cut-off events. [2021-03-24 10:59:33,064 INFO L130 PetriNetUnfolder]: For 290/310 co-relation queries the response was YES. [2021-03-24 10:59:33,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 67 events. 11/67 cut-off events. For 290/310 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 214 event pairs, 0 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 300. Up to 23 conditions per place. [2021-03-24 10:59:33,065 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 14 changer transitions 3/41 dead transitions. [2021-03-24 10:59:33,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 41 transitions, 438 flow [2021-03-24 10:59:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:59:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:59:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2021-03-24 10:59:33,066 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7438423645320197 [2021-03-24 10:59:33,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2021-03-24 10:59:33,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2021-03-24 10:59:33,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:33,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2021-03-24 10:59:33,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 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) [2021-03-24 10:59:33,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:33,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 10:59:33,069 INFO L185 Difference]: Start difference. First operand has 52 places, 32 transitions, 282 flow. Second operand 7 states and 604 transitions. [2021-03-24 10:59:33,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 41 transitions, 438 flow [2021-03-24 10:59:33,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 386 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-24 10:59:33,071 INFO L241 Difference]: Finished difference. Result has 57 places, 35 transitions, 346 flow [2021-03-24 10:59:33,071 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2021-03-24 10:59:33,071 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2021-03-24 10:59:33,071 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 346 flow [2021-03-24 10:59:33,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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) [2021-03-24 10:59:33,072 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:33,072 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:33,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 10:59:33,073 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:33,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:33,074 INFO L82 PathProgramCache]: Analyzing trace with hash 205960977, now seen corresponding path program 1 times [2021-03-24 10:59:33,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:33,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645388226] [2021-03-24 10:59:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:33,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:33,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:33,108 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 10:59:33,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 10:59:33,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:33,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645388226] [2021-03-24 10:59:33,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:33,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:59:33,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895314694] [2021-03-24 10:59:33,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:33,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:33,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:33,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:33,120 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 10:59:33,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 35 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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) [2021-03-24 10:59:33,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:33,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 10:59:33,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:33,149 INFO L129 PetriNetUnfolder]: 8/65 cut-off events. [2021-03-24 10:59:33,149 INFO L130 PetriNetUnfolder]: For 317/337 co-relation queries the response was YES. [2021-03-24 10:59:33,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 65 events. 8/65 cut-off events. For 317/337 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 219 event pairs, 0 based on Foata normal form. 9/74 useless extension candidates. Maximal degree in co-relation 302. Up to 18 conditions per place. [2021-03-24 10:59:33,150 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 12 selfloop transitions, 13 changer transitions 3/40 dead transitions. [2021-03-24 10:59:33,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 40 transitions, 455 flow [2021-03-24 10:59:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 10:59:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 10:59:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2021-03-24 10:59:33,151 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7456896551724138 [2021-03-24 10:59:33,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2021-03-24 10:59:33,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2021-03-24 10:59:33,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:33,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2021-03-24 10:59:33,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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) [2021-03-24 10:59:33,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 10:59:33,153 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 10:59:33,153 INFO L185 Difference]: Start difference. First operand has 57 places, 35 transitions, 346 flow. Second operand 6 states and 519 transitions. [2021-03-24 10:59:33,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 40 transitions, 455 flow [2021-03-24 10:59:33,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 40 transitions, 439 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 10:59:33,156 INFO L241 Difference]: Finished difference. Result has 59 places, 35 transitions, 381 flow [2021-03-24 10:59:33,156 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2021-03-24 10:59:33,156 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-24 10:59:33,156 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 381 flow [2021-03-24 10:59:33,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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) [2021-03-24 10:59:33,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:33,156 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:33,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 10:59:33,156 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:33,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1580116611, now seen corresponding path program 1 times [2021-03-24 10:59:33,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:33,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054583771] [2021-03-24 10:59:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:33,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:33,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:33,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:33,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:33,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054583771] [2021-03-24 10:59:33,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:33,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:59:33,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335217250] [2021-03-24 10:59:33,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:33,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:33,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:33,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:33,208 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 116 [2021-03-24 10:59:33,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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) [2021-03-24 10:59:33,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:33,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 116 [2021-03-24 10:59:33,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:33,246 INFO L129 PetriNetUnfolder]: 9/64 cut-off events. [2021-03-24 10:59:33,247 INFO L130 PetriNetUnfolder]: For 451/460 co-relation queries the response was YES. [2021-03-24 10:59:33,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 64 events. 9/64 cut-off events. For 451/460 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 199 event pairs, 0 based on Foata normal form. 5/68 useless extension candidates. Maximal degree in co-relation 324. Up to 17 conditions per place. [2021-03-24 10:59:33,247 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 2 selfloop transitions, 4 changer transitions 18/39 dead transitions. [2021-03-24 10:59:33,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 39 transitions, 448 flow [2021-03-24 10:59:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 10:59:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 10:59:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2021-03-24 10:59:33,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8017241379310345 [2021-03-24 10:59:33,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 558 transitions. [2021-03-24 10:59:33,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 558 transitions. [2021-03-24 10:59:33,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:33,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 558 transitions. [2021-03-24 10:59:33,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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) [2021-03-24 10:59:33,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 10:59:33,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 10:59:33,250 INFO L185 Difference]: Start difference. First operand has 59 places, 35 transitions, 381 flow. Second operand 6 states and 558 transitions. [2021-03-24 10:59:33,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 39 transitions, 448 flow [2021-03-24 10:59:33,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 39 transitions, 412 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-24 10:59:33,253 INFO L241 Difference]: Finished difference. Result has 63 places, 21 transitions, 157 flow [2021-03-24 10:59:33,253 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=63, PETRI_TRANSITIONS=21} [2021-03-24 10:59:33,253 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-24 10:59:33,253 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 21 transitions, 157 flow [2021-03-24 10:59:33,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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) [2021-03-24 10:59:33,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:59:33,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:59:33,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 10:59:33,254 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:59:33,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:59:33,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2108691463, now seen corresponding path program 1 times [2021-03-24 10:59:33,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:59:33,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316518006] [2021-03-24 10:59:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:59:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:59:33,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:59:33,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:33,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:59:33,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:59:33,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:59:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:59:33,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316518006] [2021-03-24 10:59:33,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:59:33,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:59:33,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83948781] [2021-03-24 10:59:33,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:59:33,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:59:33,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:59:33,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:59:33,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-24 10:59:33,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 21 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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) [2021-03-24 10:59:33,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:59:33,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-24 10:59:33,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:59:33,328 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-24 10:59:33,329 INFO L130 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2021-03-24 10:59:33,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 22 events. 0/22 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 10:59:33,329 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-03-24 10:59:33,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 21 transitions, 186 flow [2021-03-24 10:59:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:59:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:59:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2021-03-24 10:59:33,333 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7741379310344828 [2021-03-24 10:59:33,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2021-03-24 10:59:33,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2021-03-24 10:59:33,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:59:33,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2021-03-24 10:59:33,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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) [2021-03-24 10:59:33,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2021-03-24 10:59:33,338 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2021-03-24 10:59:33,338 INFO L185 Difference]: Start difference. First operand has 63 places, 21 transitions, 157 flow. Second operand 5 states and 449 transitions. [2021-03-24 10:59:33,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 21 transitions, 186 flow [2021-03-24 10:59:33,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 21 transitions, 90 flow, removed 14 selfloop flow, removed 23 redundant places. [2021-03-24 10:59:33,339 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2021-03-24 10:59:33,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2021-03-24 10:59:33,339 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-24 10:59:33,339 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2021-03-24 10:59:33,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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) [2021-03-24 10:59:33,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 10:59:33,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:59:33 BasicIcfg [2021-03-24 10:59:33,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 10:59:33,342 INFO L168 Benchmark]: Toolchain (without parser) took 3221.62 ms. Allocated memory was 318.8 MB in the beginning and 413.1 MB in the end (delta: 94.4 MB). Free memory was 281.8 MB in the beginning and 241.4 MB in the end (delta: 40.4 MB). Peak memory consumption was 135.4 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:33,343 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 318.8 MB. Free memory was 299.9 MB in the beginning and 299.8 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:59:33,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.48 ms. Allocated memory is still 318.8 MB. Free memory was 281.6 MB in the beginning and 280.9 MB in the end (delta: 653.0 kB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:33,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 318.8 MB. Free memory was 280.9 MB in the beginning and 278.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:33,343 INFO L168 Benchmark]: Boogie Preprocessor took 12.30 ms. Allocated memory is still 318.8 MB. Free memory was 278.8 MB in the beginning and 277.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:33,344 INFO L168 Benchmark]: RCFGBuilder took 295.57 ms. Allocated memory is still 318.8 MB. Free memory was 277.8 MB in the beginning and 253.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:33,344 INFO L168 Benchmark]: TraceAbstraction took 2559.04 ms. Allocated memory was 318.8 MB in the beginning and 413.1 MB in the end (delta: 94.4 MB). Free memory was 252.6 MB in the beginning and 241.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 107.7 MB. Max. memory is 16.0 GB. [2021-03-24 10:59:33,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 318.8 MB. Free memory was 299.9 MB in the beginning and 299.8 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 326.48 ms. Allocated memory is still 318.8 MB. Free memory was 281.6 MB in the beginning and 280.9 MB in the end (delta: 653.0 kB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 318.8 MB. Free memory was 280.9 MB in the beginning and 278.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.30 ms. Allocated memory is still 318.8 MB. Free memory was 278.8 MB in the beginning and 277.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 295.57 ms. Allocated memory is still 318.8 MB. Free memory was 277.8 MB in the beginning and 253.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2559.04 ms. Allocated memory was 318.8 MB in the beginning and 413.1 MB in the end (delta: 94.4 MB). Free memory was 252.6 MB in the beginning and 241.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 107.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1229.5ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 681, positive: 634, positive conditional: 0, positive unconditional: 634, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 447, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 447, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 681, positive: 206, positive conditional: 0, positive unconditional: 206, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 447, unknown conditional: 0, unknown unconditional: 447] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2491.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 528.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1299.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 84 SDtfs, 80 SDslu, 109 SDs, 0 SdLazy, 130 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 211.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=381occurred in iteration=6, InterpolantAutomatonStates: 51, 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: 16.4ms SsaConstructionTime, 135.1ms SatisfiabilityAnalysisTime, 373.8ms InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...