/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:22:36,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:22:36,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:22:36,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:22:36,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:22:36,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:22:36,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:22:36,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:22:36,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:22:36,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:22:36,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:22:36,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:22:36,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:22:36,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:22:36,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:22:36,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:22:36,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:22:36,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:22:36,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:22:36,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:22:36,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:22:36,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:22:36,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:22:36,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:22:36,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 20:22:36,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 20:22:36,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 20:22:36,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 20:22:36,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 20:22:36,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 20:22:36,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:22:36,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:22:36,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:22:36,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:22:36,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:22:36,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:22:36,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:22:36,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:22:36,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:22:36,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:22:36,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:22:36,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:22:36,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:22:36,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:22:36,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:22:36,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:22:36,677 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:22:36,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:22:36,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:22:36,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:22:36,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:22:36,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:22:36,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:22:36,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:22:36,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:22:36,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:22:36,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:22:36,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:22:36,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:22:36,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:22:36,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:22:36,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:22:36,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:22:36,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:22:36,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:22:36,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:22:36,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:22:36,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:22:36,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:22:36,681 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:22:36,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:22:36,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:22:36,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:22:36,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:22:36,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:22:36,988 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:22:36,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2021-03-11 20:22:37,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984c075d/69a560471d844e66bee1ea3ca40dc1f5/FLAGbc494444f [2021-03-11 20:22:37,583 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:22:37,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2021-03-11 20:22:37,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984c075d/69a560471d844e66bee1ea3ca40dc1f5/FLAGbc494444f [2021-03-11 20:22:37,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984c075d/69a560471d844e66bee1ea3ca40dc1f5 [2021-03-11 20:22:37,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:22:37,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:22:37,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:22:37,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:22:37,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:22:37,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:22:37" (1/1) ... [2021-03-11 20:22:37,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b621929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:37, skipping insertion in model container [2021-03-11 20:22:37,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:22:37" (1/1) ... [2021-03-11 20:22:37,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:22:37,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:22:38,093 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/safe010_tso.opt.i[949,962] [2021-03-11 20:22:38,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:22:38,286 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:22:38,296 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/safe010_tso.opt.i[949,962] [2021-03-11 20:22:38,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:22:38,393 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:22:38,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38 WrapperNode [2021-03-11 20:22:38,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:22:38,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:22:38,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:22:38,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:22:38,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:22:38,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:22:38,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:22:38,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:22:38,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... [2021-03-11 20:22:38,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:22:38,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:22:38,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:22:38,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:22:38,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:22:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:22:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:22:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:22:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:22:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:22:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:22:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:22:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:22:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:22:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:22:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:22:38,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:22:38,539 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:22:38,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:22:38,905 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:22:38,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:22:38 BoogieIcfgContainer [2021-03-11 20:22:38,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:22:38,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:22:38,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:22:38,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:22:38,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:22:37" (1/3) ... [2021-03-11 20:22:38,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632dfbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:22:38, skipping insertion in model container [2021-03-11 20:22:38,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:22:38" (2/3) ... [2021-03-11 20:22:38,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632dfbd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:22:38, skipping insertion in model container [2021-03-11 20:22:38,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:22:38" (3/3) ... [2021-03-11 20:22:38,916 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2021-03-11 20:22:38,921 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:22:38,925 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:22:38,926 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:22:38,953 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,953 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,954 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,954 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,954 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,954 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,954 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,954 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,955 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,956 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,957 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,957 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,957 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,957 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,960 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,961 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,961 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,967 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,967 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:22:38,968 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:22:38,985 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 20:22:39,011 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:22:39,011 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:22:39,011 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:22:39,012 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:22:39,012 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:22:39,012 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:22:39,012 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:22:39,012 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:22:39,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-03-11 20:22:39,071 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-03-11 20:22:39,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:22:39,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 20:22:39,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 130 flow [2021-03-11 20:22:39,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 48 transitions, 102 flow [2021-03-11 20:22:39,086 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:22:39,093 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-11 20:22:39,095 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-11 20:22:39,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 48 transitions, 102 flow [2021-03-11 20:22:39,125 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-11 20:22:39,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:22:39,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-11 20:22:39,127 INFO L116 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-11 20:22:40,853 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 20:22:41,103 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-11 20:22:41,184 INFO L131 LiptonReduction]: Checked pairs total: 920 [2021-03-11 20:22:41,184 INFO L133 LiptonReduction]: Total number of compositions: 41 [2021-03-11 20:22:41,185 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2103 [2021-03-11 20:22:41,193 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-11 20:22:41,193 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:22:41,193 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:22:41,194 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 20:22:41,194 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:22:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:22:41,199 INFO L82 PathProgramCache]: Analyzing trace with hash 202058649, now seen corresponding path program 1 times [2021-03-11 20:22:41,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:22:41,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566996397] [2021-03-11 20:22:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:22:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:22:41,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:22:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:22:41,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566996397] [2021-03-11 20:22:41,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:22:41,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:22:41,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040453168] [2021-03-11 20:22:41,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:22:41,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:22:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:22:41,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:22:41,353 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 101 [2021-03-11 20:22:41,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:22:41,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 101 [2021-03-11 20:22:41,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:22:41,362 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:22:41,362 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:22:41,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:22:41,363 INFO L132 encePairwiseOnDemand]: 100/101 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2021-03-11 20:22:41,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2021-03-11 20:22:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:22:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:22:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2021-03-11 20:22:41,373 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9257425742574258 [2021-03-11 20:22:41,373 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2021-03-11 20:22:41,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2021-03-11 20:22:41,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:22:41,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2021-03-11 20:22:41,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,383 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,385 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 187 transitions. [2021-03-11 20:22:41,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2021-03-11 20:22:41,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:22:41,388 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2021-03-11 20:22:41,390 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-03-11 20:22:41,390 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-03-11 20:22:41,391 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2021-03-11 20:22:41,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,391 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:22:41,391 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 20:22:41,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:22:41,392 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:22:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:22:41,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1968850909, now seen corresponding path program 1 times [2021-03-11 20:22:41,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:22:41,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024170678] [2021-03-11 20:22:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:22:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:22:41,499 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:22:41,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:22:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:22:41,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024170678] [2021-03-11 20:22:41,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:22:41,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:22:41,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990767547] [2021-03-11 20:22:41,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:22:41,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:22:41,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:22:41,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:22:41,524 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2021-03-11 20:22:41,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:22:41,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2021-03-11 20:22:41,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:22:41,553 INFO L129 PetriNetUnfolder]: 4/29 cut-off events. [2021-03-11 20:22:41,553 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:22:41,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 29 events. 4/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 73 event pairs, 2 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 50. Up to 13 conditions per place. [2021-03-11 20:22:41,554 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 3 selfloop transitions, 4 changer transitions 0/14 dead transitions. [2021-03-11 20:22:41,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 46 flow [2021-03-11 20:22:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:22:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:22:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-03-11 20:22:41,562 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7491749174917491 [2021-03-11 20:22:41,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-03-11 20:22:41,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-03-11 20:22:41,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:22:41,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-03-11 20:22:41,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,570 INFO L185 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 227 transitions. [2021-03-11 20:22:41,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 46 flow [2021-03-11 20:22:41,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:22:41,571 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 50 flow [2021-03-11 20:22:41,571 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2021-03-11 20:22:41,572 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2021-03-11 20:22:41,572 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 50 flow [2021-03-11 20:22:41,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,572 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:22:41,572 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:22:41,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:22:41,573 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:22:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:22:41,573 INFO L82 PathProgramCache]: Analyzing trace with hash 904835377, now seen corresponding path program 1 times [2021-03-11 20:22:41,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:22:41,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815426900] [2021-03-11 20:22:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:22:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:22:41,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:22:41,664 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:22:41,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:22:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:22:41,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815426900] [2021-03-11 20:22:41,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:22:41,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:22:41,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677995931] [2021-03-11 20:22:41,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:22:41,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:22:41,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:22:41,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:22:41,677 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2021-03-11 20:22:41,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:22:41,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2021-03-11 20:22:41,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:22:41,698 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-03-11 20:22:41,698 INFO L130 PetriNetUnfolder]: For 7/13 co-relation queries the response was YES. [2021-03-11 20:22:41,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 27 events. 3/27 cut-off events. For 7/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 65. Up to 11 conditions per place. [2021-03-11 20:22:41,700 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 3 selfloop transitions, 5 changer transitions 0/15 dead transitions. [2021-03-11 20:22:41,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 15 transitions, 71 flow [2021-03-11 20:22:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:22:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:22:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2021-03-11 20:22:41,702 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7425742574257426 [2021-03-11 20:22:41,702 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 300 transitions. [2021-03-11 20:22:41,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 300 transitions. [2021-03-11 20:22:41,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:22:41,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 300 transitions. [2021-03-11 20:22:41,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 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) [2021-03-11 20:22:41,706 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 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) [2021-03-11 20:22:41,706 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 50 flow. Second operand 4 states and 300 transitions. [2021-03-11 20:22:41,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 15 transitions, 71 flow [2021-03-11 20:22:41,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:22:41,708 INFO L241 Difference]: Finished difference. Result has 25 places, 15 transitions, 69 flow [2021-03-11 20:22:41,708 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2021-03-11 20:22:41,708 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2021-03-11 20:22:41,708 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 69 flow [2021-03-11 20:22:41,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,709 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:22:41,709 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:22:41,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:22:41,709 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:22:41,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:22:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash 904809368, now seen corresponding path program 1 times [2021-03-11 20:22:41,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:22:41,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903541212] [2021-03-11 20:22:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:22:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:22:41,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:22:41,760 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:22:41,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:22:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:22:41,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903541212] [2021-03-11 20:22:41,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:22:41,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:22:41,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796097452] [2021-03-11 20:22:41,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:22:41,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:22:41,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:22:41,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:22:41,769 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 101 [2021-03-11 20:22:41,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:22:41,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 101 [2021-03-11 20:22:41,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:22:41,797 INFO L129 PetriNetUnfolder]: 7/39 cut-off events. [2021-03-11 20:22:41,797 INFO L130 PetriNetUnfolder]: For 43/53 co-relation queries the response was YES. [2021-03-11 20:22:41,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 39 events. 7/39 cut-off events. For 43/53 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 0 based on Foata normal form. 8/47 useless extension candidates. Maximal degree in co-relation 108. Up to 11 conditions per place. [2021-03-11 20:22:41,798 INFO L132 encePairwiseOnDemand]: 95/101 looper letters, 5 selfloop transitions, 8 changer transitions 2/21 dead transitions. [2021-03-11 20:22:41,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 135 flow [2021-03-11 20:22:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:22:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:22:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2021-03-11 20:22:41,800 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7326732673267327 [2021-03-11 20:22:41,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 370 transitions. [2021-03-11 20:22:41,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 370 transitions. [2021-03-11 20:22:41,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:22:41,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 370 transitions. [2021-03-11 20:22:41,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,803 INFO L185 Difference]: Start difference. First operand has 25 places, 15 transitions, 69 flow. Second operand 5 states and 370 transitions. [2021-03-11 20:22:41,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 135 flow [2021-03-11 20:22:41,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:22:41,805 INFO L241 Difference]: Finished difference. Result has 30 places, 18 transitions, 112 flow [2021-03-11 20:22:41,805 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2021-03-11 20:22:41,805 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 11 predicate places. [2021-03-11 20:22:41,805 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 112 flow [2021-03-11 20:22:41,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,806 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:22:41,806 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:22:41,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:22:41,806 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:22:41,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:22:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2015708292, now seen corresponding path program 1 times [2021-03-11 20:22:41,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:22:41,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111326594] [2021-03-11 20:22:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:22:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:22:41,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:22:41,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:22:41,850 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 20:22:41,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:22:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:22:41,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111326594] [2021-03-11 20:22:41,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:22:41,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:22:41,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798604445] [2021-03-11 20:22:41,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:22:41,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:22:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:22:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:22:41,861 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 101 [2021-03-11 20:22:41,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:22:41,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 101 [2021-03-11 20:22:41,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:22:41,883 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-03-11 20:22:41,883 INFO L130 PetriNetUnfolder]: For 73/82 co-relation queries the response was YES. [2021-03-11 20:22:41,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 28 events. 1/28 cut-off events. For 73/82 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 71 event pairs, 0 based on Foata normal form. 7/35 useless extension candidates. Maximal degree in co-relation 94. Up to 7 conditions per place. [2021-03-11 20:22:41,884 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 2 selfloop transitions, 4 changer transitions 7/19 dead transitions. [2021-03-11 20:22:41,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 19 transitions, 147 flow [2021-03-11 20:22:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:22:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:22:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2021-03-11 20:22:41,885 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7247524752475247 [2021-03-11 20:22:41,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 366 transitions. [2021-03-11 20:22:41,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 366 transitions. [2021-03-11 20:22:41,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:22:41,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 366 transitions. [2021-03-11 20:22:41,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,889 INFO L185 Difference]: Start difference. First operand has 30 places, 18 transitions, 112 flow. Second operand 5 states and 366 transitions. [2021-03-11 20:22:41,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 19 transitions, 147 flow [2021-03-11 20:22:41,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 19 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:22:41,891 INFO L241 Difference]: Finished difference. Result has 35 places, 12 transitions, 78 flow [2021-03-11 20:22:41,891 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=12} [2021-03-11 20:22:41,891 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2021-03-11 20:22:41,891 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 12 transitions, 78 flow [2021-03-11 20:22:41,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,892 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:22:41,892 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:22:41,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:22:41,892 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:22:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:22:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1963361338, now seen corresponding path program 1 times [2021-03-11 20:22:41,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:22:41,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127044935] [2021-03-11 20:22:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:22:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:22:41,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:22:41,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:22:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:22:41,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127044935] [2021-03-11 20:22:41,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:22:41,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:22:41,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753850231] [2021-03-11 20:22:41,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:22:41,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:22:41,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:22:41,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:22:41,931 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2021-03-11 20:22:41,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 12 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:22:41,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2021-03-11 20:22:41,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:22:41,956 INFO L129 PetriNetUnfolder]: 4/25 cut-off events. [2021-03-11 20:22:41,957 INFO L130 PetriNetUnfolder]: For 59/63 co-relation queries the response was YES. [2021-03-11 20:22:41,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 25 events. 4/25 cut-off events. For 59/63 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 44 event pairs, 1 based on Foata normal form. 4/28 useless extension candidates. Maximal degree in co-relation 75. Up to 12 conditions per place. [2021-03-11 20:22:41,957 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 3 selfloop transitions, 2 changer transitions 7/19 dead transitions. [2021-03-11 20:22:41,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 19 transitions, 116 flow [2021-03-11 20:22:41,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:22:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:22:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 379 transitions. [2021-03-11 20:22:41,959 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7504950495049505 [2021-03-11 20:22:41,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 379 transitions. [2021-03-11 20:22:41,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 379 transitions. [2021-03-11 20:22:41,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:22:41,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 379 transitions. [2021-03-11 20:22:41,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,962 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,962 INFO L185 Difference]: Start difference. First operand has 35 places, 12 transitions, 78 flow. Second operand 5 states and 379 transitions. [2021-03-11 20:22:41,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 19 transitions, 116 flow [2021-03-11 20:22:41,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 80 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-03-11 20:22:41,964 INFO L241 Difference]: Finished difference. Result has 31 places, 12 transitions, 58 flow [2021-03-11 20:22:41,964 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=12} [2021-03-11 20:22:41,964 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2021-03-11 20:22:41,964 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 12 transitions, 58 flow [2021-03-11 20:22:41,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:41,964 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:22:41,965 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:22:41,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:22:41,965 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:22:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:22:41,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1220562888, now seen corresponding path program 1 times [2021-03-11 20:22:41,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:22:41,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439527] [2021-03-11 20:22:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:22:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:22:41,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:22:41,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:22:41,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:22:41,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:22:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:22:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439527] [2021-03-11 20:22:42,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:22:42,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:22:42,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325120191] [2021-03-11 20:22:42,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:22:42,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:22:42,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:22:42,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:22:42,005 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2021-03-11 20:22:42,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 12 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:42,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:22:42,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2021-03-11 20:22:42,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:22:42,035 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-11 20:22:42,035 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2021-03-11 20:22:42,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 13 events. 0/13 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-11 20:22:42,035 INFO L132 encePairwiseOnDemand]: 96/101 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-11 20:22:42,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 13 transitions, 70 flow [2021-03-11 20:22:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:22:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:22:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2021-03-11 20:22:42,037 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7343234323432343 [2021-03-11 20:22:42,038 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 445 transitions. [2021-03-11 20:22:42,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 445 transitions. [2021-03-11 20:22:42,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:22:42,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 445 transitions. [2021-03-11 20:22:42,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:42,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:42,040 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:42,041 INFO L185 Difference]: Start difference. First operand has 31 places, 12 transitions, 58 flow. Second operand 6 states and 445 transitions. [2021-03-11 20:22:42,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 13 transitions, 70 flow [2021-03-11 20:22:42,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 13 transitions, 57 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-11 20:22:42,041 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-03-11 20:22:42,041 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-03-11 20:22:42,042 INFO L335 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2021-03-11 20:22:42,042 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2021-03-11 20:22:42,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:22:42,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:22:42,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:22:42 BasicIcfg [2021-03-11 20:22:42,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:22:42,047 INFO L168 Benchmark]: Toolchain (without parser) took 4142.14 ms. Allocated memory was 255.9 MB in the beginning and 446.7 MB in the end (delta: 190.8 MB). Free memory was 235.1 MB in the beginning and 293.3 MB in the end (delta: -58.3 MB). Peak memory consumption was 130.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:22:42,047 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:22:42,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.15 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 234.6 MB in the beginning and 334.6 MB in the end (delta: -99.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:22:42,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 371.2 MB. Free memory was 334.6 MB in the beginning and 332.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:22:42,054 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 ms. Allocated memory is still 371.2 MB. Free memory was 332.9 MB in the beginning and 331.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:22:42,055 INFO L168 Benchmark]: RCFGBuilder took 437.12 ms. Allocated memory is still 371.2 MB. Free memory was 331.4 MB in the beginning and 310.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:22:42,055 INFO L168 Benchmark]: TraceAbstraction took 3135.55 ms. Allocated memory was 371.2 MB in the beginning and 446.7 MB in the end (delta: 75.5 MB). Free memory was 309.9 MB in the beginning and 293.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:22:42,063 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 486.15 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 234.6 MB in the beginning and 334.6 MB in the end (delta: -99.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 371.2 MB. Free memory was 334.6 MB in the beginning and 332.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.91 ms. Allocated memory is still 371.2 MB. Free memory was 332.9 MB in the beginning and 331.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 437.12 ms. Allocated memory is still 371.2 MB. Free memory was 331.4 MB in the beginning and 310.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3135.55 ms. Allocated memory was 371.2 MB in the beginning and 446.7 MB in the end (delta: 75.5 MB). Free memory was 309.9 MB in the beginning and 293.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2089.6ms, 54 PlacesBefore, 19 PlacesAfterwards, 48 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 920 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 514, positive: 456, positive conditional: 0, positive unconditional: 456, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 323, positive: 301, positive conditional: 0, positive unconditional: 301, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 323, positive: 298, positive conditional: 0, positive unconditional: 298, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 514, positive: 155, positive conditional: 0, positive unconditional: 155, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 323, unknown conditional: 0, unknown unconditional: 323] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3034.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 268.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2178.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 17 SDslu, 13 SDs, 0 SdLazy, 52 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 82.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=4, InterpolantAutomatonStates: 30, 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: 12.1ms SsaConstructionTime, 118.8ms SatisfiabilityAnalysisTime, 289.2ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...