/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:27:46,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:27:46,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:27:46,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:27:46,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:27:46,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:27:46,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:27:46,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:27:46,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:27:46,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:27:46,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:27:46,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:27:46,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:27:46,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:27:46,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:27:46,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:27:46,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:27:46,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:27:46,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:27:46,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:27:46,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:27:46,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:27:46,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:27:46,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:27:46,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:27:46,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:27:46,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:27:46,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:27:46,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:27:46,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:27:46,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:27:46,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:27:46,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:27:46,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:27:46,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:27:46,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:27:46,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:27:46,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:27:46,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:27:46,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:27:46,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:27:46,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:27:46,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:27:46,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:27:46,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:27:46,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:27:46,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:27:46,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:27:46,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:27:46,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:27:46,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:27:46,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:27:46,545 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:27:46,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:27:46,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:27:46,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:27:46,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:27:46,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:27:46,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:27:46,786 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:27:46,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-06-10 12:27:46,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6dfc2b3d/0bc77f16d4d448029bef188f7629218c/FLAG665db64db [2021-06-10 12:27:47,228 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:27:47,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2021-06-10 12:27:47,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6dfc2b3d/0bc77f16d4d448029bef188f7629218c/FLAG665db64db [2021-06-10 12:27:47,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6dfc2b3d/0bc77f16d4d448029bef188f7629218c [2021-06-10 12:27:47,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:27:47,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:27:47,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:47,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:27:47,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:27:47,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4195a203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47, skipping insertion in model container [2021-06-10 12:27:47,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:27:47,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:27:47,718 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/safe020_tso.oepc.i[950,963] [2021-06-10 12:27:47,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:47,829 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:27:47,837 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/safe020_tso.oepc.i[950,963] [2021-06-10 12:27:47,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:47,907 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:27:47,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47 WrapperNode [2021-06-10 12:27:47,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:47,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:47,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:27:47,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:27:47,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:47,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:27:47,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:27:47,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:27:47,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (1/1) ... [2021-06-10 12:27:47,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:27:47,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:27:47,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:27:47,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:27:47,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (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 [2021-06-10 12:27:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:27:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:27:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:27:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:27:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:27:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:27:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:27:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:27:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:27:47,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:27:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:27:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:27:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:27:47,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:27:48,005 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:27:48,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:27:48,346 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:27:48,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:48 BoogieIcfgContainer [2021-06-10 12:27:48,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:27:48,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:27:48,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:27:48,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:27:48,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:27:47" (1/3) ... [2021-06-10 12:27:48,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facf334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:48, skipping insertion in model container [2021-06-10 12:27:48,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:47" (2/3) ... [2021-06-10 12:27:48,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facf334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:48, skipping insertion in model container [2021-06-10 12:27:48,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:48" (3/3) ... [2021-06-10 12:27:48,354 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2021-06-10 12:27:48,358 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:27:48,361 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:27:48,362 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:27:48,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,389 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,390 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,390 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,391 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,392 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,395 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,395 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:48,409 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:27:48,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:27:48,446 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:27:48,446 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:27:48,446 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:27:48,447 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:27:48,447 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:27:48,447 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:27:48,447 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:27:48,447 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:27:48,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 12:27:48,495 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-06-10 12:27:48,495 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:48,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 12:27:48,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 12:27:48,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-06-10 12:27:48,526 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-06-10 12:27:48,527 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:48,527 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:48,527 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:48,528 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:48,536 INFO L82 PathProgramCache]: Analyzing trace with hash 593098047, now seen corresponding path program 1 times [2021-06-10 12:27:48,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:48,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805983999] [2021-06-10 12:27:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:48,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:48,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:48,766 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:48,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:48,779 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:48,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:48,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:48,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:48,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:48,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:48,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:48,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:48,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805983999] [2021-06-10 12:27:48,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:48,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:27:48,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792038298] [2021-06-10 12:27:48,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:27:48,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:48,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:27:48,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:27:48,842 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:27:48,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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) [2021-06-10 12:27:48,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:48,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:27:48,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:49,135 INFO L129 PetriNetUnfolder]: 100/336 cut-off events. [2021-06-10 12:27:49,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:49,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 336 events. 100/336 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1699 event pairs, 32 based on Foata normal form. 13/338 useless extension candidates. Maximal degree in co-relation 525. Up to 87 conditions per place. [2021-06-10 12:27:49,139 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 15 selfloop transitions, 5 changer transitions 28/92 dead transitions. [2021-06-10 12:27:49,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 289 flow [2021-06-10 12:27:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:27:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:27:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2021-06-10 12:27:49,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8462709284627092 [2021-06-10 12:27:49,159 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2021-06-10 12:27:49,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2021-06-10 12:27:49,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:49,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2021-06-10 12:27:49,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.77777777777778) internal successors, (556), 9 states have internal predecessors, (556), 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) [2021-06-10 12:27:49,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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) [2021-06-10 12:27:49,189 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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) [2021-06-10 12:27:49,190 INFO L185 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 9 states and 556 transitions. [2021-06-10 12:27:49,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 289 flow [2021-06-10 12:27:49,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:27:49,196 INFO L241 Difference]: Finished difference. Result has 79 places, 60 transitions, 179 flow [2021-06-10 12:27:49,197 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=179, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2021-06-10 12:27:49,197 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2021-06-10 12:27:49,198 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 179 flow [2021-06-10 12:27:49,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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) [2021-06-10 12:27:49,198 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:49,198 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:49,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:27:49,198 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:49,199 INFO L82 PathProgramCache]: Analyzing trace with hash -441614848, now seen corresponding path program 1 times [2021-06-10 12:27:49,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:49,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139041326] [2021-06-10 12:27:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:49,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:49,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:49,283 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:49,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:49,295 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:49,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:49,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:49,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:49,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:49,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139041326] [2021-06-10 12:27:49,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:49,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:49,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018180495] [2021-06-10 12:27:49,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:49,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:49,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:49,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:49,334 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:27:49,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 179 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-06-10 12:27:49,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:49,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:27:49,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:49,567 INFO L129 PetriNetUnfolder]: 63/277 cut-off events. [2021-06-10 12:27:49,567 INFO L130 PetriNetUnfolder]: For 359/443 co-relation queries the response was YES. [2021-06-10 12:27:49,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 277 events. 63/277 cut-off events. For 359/443 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1380 event pairs, 10 based on Foata normal form. 8/278 useless extension candidates. Maximal degree in co-relation 696. Up to 63 conditions per place. [2021-06-10 12:27:49,572 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 16 selfloop transitions, 6 changer transitions 25/91 dead transitions. [2021-06-10 12:27:49,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 474 flow [2021-06-10 12:27:49,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:27:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:27:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 777 transitions. [2021-06-10 12:27:49,580 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8187565858798735 [2021-06-10 12:27:49,580 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 777 transitions. [2021-06-10 12:27:49,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 777 transitions. [2021-06-10 12:27:49,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:49,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 777 transitions. [2021-06-10 12:27:49,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.76923076923077) internal successors, (777), 13 states have internal predecessors, (777), 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) [2021-06-10 12:27:49,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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) [2021-06-10 12:27:49,586 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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) [2021-06-10 12:27:49,586 INFO L185 Difference]: Start difference. First operand has 79 places, 60 transitions, 179 flow. Second operand 13 states and 777 transitions. [2021-06-10 12:27:49,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 474 flow [2021-06-10 12:27:49,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 91 transitions, 438 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-10 12:27:49,593 INFO L241 Difference]: Finished difference. Result has 92 places, 61 transitions, 212 flow [2021-06-10 12:27:49,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=92, PETRI_TRANSITIONS=61} [2021-06-10 12:27:49,594 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2021-06-10 12:27:49,594 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 61 transitions, 212 flow [2021-06-10 12:27:49,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-06-10 12:27:49,595 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:49,595 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:49,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:27:49,595 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:49,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1823047648, now seen corresponding path program 1 times [2021-06-10 12:27:49,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:49,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675130385] [2021-06-10 12:27:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:49,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:49,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:49,681 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:49,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:49,708 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:49,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:49,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:49,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:49,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:49,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:49,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:49,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675130385] [2021-06-10 12:27:49,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:49,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:49,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944915947] [2021-06-10 12:27:49,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:49,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:49,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:49,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:49,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-06-10 12:27:49,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 61 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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) [2021-06-10 12:27:49,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:49,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-06-10 12:27:49,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:50,006 INFO L129 PetriNetUnfolder]: 225/642 cut-off events. [2021-06-10 12:27:50,006 INFO L130 PetriNetUnfolder]: For 1676/1948 co-relation queries the response was YES. [2021-06-10 12:27:50,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 642 events. 225/642 cut-off events. For 1676/1948 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3973 event pairs, 5 based on Foata normal form. 24/655 useless extension candidates. Maximal degree in co-relation 1949. Up to 127 conditions per place. [2021-06-10 12:27:50,014 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 28 selfloop transitions, 18 changer transitions 62/150 dead transitions. [2021-06-10 12:27:50,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 150 transitions, 1103 flow [2021-06-10 12:27:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 12:27:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 12:27:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1012 transitions. [2021-06-10 12:27:50,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8154713940370669 [2021-06-10 12:27:50,020 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1012 transitions. [2021-06-10 12:27:50,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1012 transitions. [2021-06-10 12:27:50,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:50,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1012 transitions. [2021-06-10 12:27:50,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.529411764705884) internal successors, (1012), 17 states have internal predecessors, (1012), 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) [2021-06-10 12:27:50,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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) [2021-06-10 12:27:50,025 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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) [2021-06-10 12:27:50,025 INFO L185 Difference]: Start difference. First operand has 92 places, 61 transitions, 212 flow. Second operand 17 states and 1012 transitions. [2021-06-10 12:27:50,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 150 transitions, 1103 flow [2021-06-10 12:27:50,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 941 flow, removed 60 selfloop flow, removed 11 redundant places. [2021-06-10 12:27:50,033 INFO L241 Difference]: Finished difference. Result has 104 places, 73 transitions, 411 flow [2021-06-10 12:27:50,034 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=411, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2021-06-10 12:27:50,034 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 37 predicate places. [2021-06-10 12:27:50,034 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 411 flow [2021-06-10 12:27:50,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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) [2021-06-10 12:27:50,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:50,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:50,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:27:50,034 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash 36889953, now seen corresponding path program 1 times [2021-06-10 12:27:50,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:50,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681381175] [2021-06-10 12:27:50,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:50,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:50,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:50,098 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:50,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:50,105 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:50,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:50,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:50,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:50,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:50,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681381175] [2021-06-10 12:27:50,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:50,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:50,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170782050] [2021-06-10 12:27:50,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:50,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:50,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:50,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:50,137 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-06-10 12:27:50,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 411 flow. Second operand has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:50,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:50,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-06-10 12:27:50,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:50,304 INFO L129 PetriNetUnfolder]: 117/409 cut-off events. [2021-06-10 12:27:50,305 INFO L130 PetriNetUnfolder]: For 3578/4034 co-relation queries the response was YES. [2021-06-10 12:27:50,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 409 events. 117/409 cut-off events. For 3578/4034 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2232 event pairs, 10 based on Foata normal form. 17/418 useless extension candidates. Maximal degree in co-relation 1809. Up to 90 conditions per place. [2021-06-10 12:27:50,308 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 18 selfloop transitions, 9 changer transitions 46/115 dead transitions. [2021-06-10 12:27:50,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 1083 flow [2021-06-10 12:27:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:27:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:27:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2021-06-10 12:27:50,310 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8057285180572852 [2021-06-10 12:27:50,310 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2021-06-10 12:27:50,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2021-06-10 12:27:50,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:50,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2021-06-10 12:27:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.81818181818182) internal successors, (647), 11 states have internal predecessors, (647), 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) [2021-06-10 12:27:50,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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) [2021-06-10 12:27:50,313 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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) [2021-06-10 12:27:50,313 INFO L185 Difference]: Start difference. First operand has 104 places, 73 transitions, 411 flow. Second operand 11 states and 647 transitions. [2021-06-10 12:27:50,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 1083 flow [2021-06-10 12:27:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 879 flow, removed 102 selfloop flow, removed 9 redundant places. [2021-06-10 12:27:50,321 INFO L241 Difference]: Finished difference. Result has 101 places, 63 transitions, 288 flow [2021-06-10 12:27:50,322 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=288, PETRI_PLACES=101, PETRI_TRANSITIONS=63} [2021-06-10 12:27:50,322 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2021-06-10 12:27:50,322 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 63 transitions, 288 flow [2021-06-10 12:27:50,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:50,322 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:50,322 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:50,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:27:50,323 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash -103778719, now seen corresponding path program 1 times [2021-06-10 12:27:50,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:50,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220086098] [2021-06-10 12:27:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:50,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:50,377 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:50,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:50,384 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:50,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:50,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:50,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:50,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:50,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220086098] [2021-06-10 12:27:50,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:50,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:50,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053093903] [2021-06-10 12:27:50,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:50,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:50,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:50,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:50,419 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:27:50,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 63 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-06-10 12:27:50,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:50,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:27:50,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:50,590 INFO L129 PetriNetUnfolder]: 52/275 cut-off events. [2021-06-10 12:27:50,590 INFO L130 PetriNetUnfolder]: For 917/973 co-relation queries the response was YES. [2021-06-10 12:27:50,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 275 events. 52/275 cut-off events. For 917/973 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1435 event pairs, 11 based on Foata normal form. 11/284 useless extension candidates. Maximal degree in co-relation 938. Up to 52 conditions per place. [2021-06-10 12:27:50,594 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 14 selfloop transitions, 9 changer transitions 28/96 dead transitions. [2021-06-10 12:27:50,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 718 flow [2021-06-10 12:27:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:27:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:27:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 780 transitions. [2021-06-10 12:27:50,597 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.821917808219178 [2021-06-10 12:27:50,597 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 780 transitions. [2021-06-10 12:27:50,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 780 transitions. [2021-06-10 12:27:50,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:50,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 780 transitions. [2021-06-10 12:27:50,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 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) [2021-06-10 12:27:50,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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) [2021-06-10 12:27:50,600 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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) [2021-06-10 12:27:50,600 INFO L185 Difference]: Start difference. First operand has 101 places, 63 transitions, 288 flow. Second operand 13 states and 780 transitions. [2021-06-10 12:27:50,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 718 flow [2021-06-10 12:27:50,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 513 flow, removed 46 selfloop flow, removed 16 redundant places. [2021-06-10 12:27:50,604 INFO L241 Difference]: Finished difference. Result has 101 places, 64 transitions, 260 flow [2021-06-10 12:27:50,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=101, PETRI_TRANSITIONS=64} [2021-06-10 12:27:50,604 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2021-06-10 12:27:50,604 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 64 transitions, 260 flow [2021-06-10 12:27:50,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-06-10 12:27:50,605 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:50,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:50,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:27:50,605 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:50,605 INFO L82 PathProgramCache]: Analyzing trace with hash 554183906, now seen corresponding path program 1 times [2021-06-10 12:27:50,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:50,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390360612] [2021-06-10 12:27:50,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:50,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:50,650 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:50,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:50,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:50,670 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:50,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:50,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:50,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390360612] [2021-06-10 12:27:50,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:50,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:27:50,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345983040] [2021-06-10 12:27:50,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:27:50,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:50,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:27:50,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:27:50,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:27:50,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 64 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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) [2021-06-10 12:27:50,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:50,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:27:50,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:50,832 INFO L129 PetriNetUnfolder]: 303/784 cut-off events. [2021-06-10 12:27:50,833 INFO L130 PetriNetUnfolder]: For 474/488 co-relation queries the response was YES. [2021-06-10 12:27:50,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1676 conditions, 784 events. 303/784 cut-off events. For 474/488 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5281 event pairs, 40 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 1653. Up to 212 conditions per place. [2021-06-10 12:27:50,838 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 24 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2021-06-10 12:27:50,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 402 flow [2021-06-10 12:27:50,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2021-06-10 12:27:50,840 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8671232876712329 [2021-06-10 12:27:50,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 633 transitions. [2021-06-10 12:27:50,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 633 transitions. [2021-06-10 12:27:50,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:50,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 633 transitions. [2021-06-10 12:27:50,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 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) [2021-06-10 12:27:50,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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) [2021-06-10 12:27:50,843 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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) [2021-06-10 12:27:50,844 INFO L185 Difference]: Start difference. First operand has 101 places, 64 transitions, 260 flow. Second operand 10 states and 633 transitions. [2021-06-10 12:27:50,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 402 flow [2021-06-10 12:27:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 368 flow, removed 12 selfloop flow, removed 11 redundant places. [2021-06-10 12:27:50,847 INFO L241 Difference]: Finished difference. Result has 96 places, 79 transitions, 346 flow [2021-06-10 12:27:50,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2021-06-10 12:27:50,847 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2021-06-10 12:27:50,847 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 346 flow [2021-06-10 12:27:50,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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) [2021-06-10 12:27:50,848 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:50,848 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:50,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:27:50,848 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:50,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1526664032, now seen corresponding path program 1 times [2021-06-10 12:27:50,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:50,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791112863] [2021-06-10 12:27:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:50,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:50,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:50,879 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:50,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:50,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:50,900 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:50,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:50,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:50,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:50,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791112863] [2021-06-10 12:27:50,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:50,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:50,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638581469] [2021-06-10 12:27:50,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:50,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:50,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:50,909 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:27:50,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:50,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:50,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:27:50,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:51,101 INFO L129 PetriNetUnfolder]: 288/790 cut-off events. [2021-06-10 12:27:51,101 INFO L130 PetriNetUnfolder]: For 1639/1905 co-relation queries the response was YES. [2021-06-10 12:27:51,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 790 events. 288/790 cut-off events. For 1639/1905 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5598 event pairs, 1 based on Foata normal form. 79/812 useless extension candidates. Maximal degree in co-relation 2636. Up to 306 conditions per place. [2021-06-10 12:27:51,106 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 20 selfloop transitions, 32 changer transitions 9/114 dead transitions. [2021-06-10 12:27:51,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 692 flow [2021-06-10 12:27:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:27:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:27:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 824 transitions. [2021-06-10 12:27:51,108 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8682824025289779 [2021-06-10 12:27:51,108 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 824 transitions. [2021-06-10 12:27:51,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 824 transitions. [2021-06-10 12:27:51,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:51,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 824 transitions. [2021-06-10 12:27:51,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.38461538461539) internal successors, (824), 13 states have internal predecessors, (824), 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) [2021-06-10 12:27:51,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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) [2021-06-10 12:27:51,112 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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) [2021-06-10 12:27:51,112 INFO L185 Difference]: Start difference. First operand has 96 places, 79 transitions, 346 flow. Second operand 13 states and 824 transitions. [2021-06-10 12:27:51,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 692 flow [2021-06-10 12:27:51,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 683 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-10 12:27:51,117 INFO L241 Difference]: Finished difference. Result has 110 places, 99 transitions, 580 flow [2021-06-10 12:27:51,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=580, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2021-06-10 12:27:51,118 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 43 predicate places. [2021-06-10 12:27:51,118 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 580 flow [2021-06-10 12:27:51,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:51,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:51,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:51,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:27:51,118 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:51,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1053679083, now seen corresponding path program 1 times [2021-06-10 12:27:51,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:51,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732371796] [2021-06-10 12:27:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:51,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:51,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:51,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:51,163 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:51,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:51,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:51,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:51,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:51,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732371796] [2021-06-10 12:27:51,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:51,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:51,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827962443] [2021-06-10 12:27:51,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:51,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:51,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:51,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:51,194 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 73 [2021-06-10 12:27:51,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 580 flow. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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) [2021-06-10 12:27:51,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:51,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 73 [2021-06-10 12:27:51,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:51,315 INFO L129 PetriNetUnfolder]: 205/826 cut-off events. [2021-06-10 12:27:51,316 INFO L130 PetriNetUnfolder]: For 2323/2520 co-relation queries the response was YES. [2021-06-10 12:27:51,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2723 conditions, 826 events. 205/826 cut-off events. For 2323/2520 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6740 event pairs, 0 based on Foata normal form. 9/788 useless extension candidates. Maximal degree in co-relation 2701. Up to 250 conditions per place. [2021-06-10 12:27:51,320 INFO L132 encePairwiseOnDemand]: 67/73 looper letters, 15 selfloop transitions, 3 changer transitions 39/109 dead transitions. [2021-06-10 12:27:51,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 680 flow [2021-06-10 12:27:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 12:27:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 12:27:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 428 transitions. [2021-06-10 12:27:51,321 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.837573385518591 [2021-06-10 12:27:51,321 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 428 transitions. [2021-06-10 12:27:51,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 428 transitions. [2021-06-10 12:27:51,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:51,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 428 transitions. [2021-06-10 12:27:51,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 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) [2021-06-10 12:27:51,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:51,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:51,323 INFO L185 Difference]: Start difference. First operand has 110 places, 99 transitions, 580 flow. Second operand 7 states and 428 transitions. [2021-06-10 12:27:51,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 680 flow [2021-06-10 12:27:51,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 566 flow, removed 44 selfloop flow, removed 6 redundant places. [2021-06-10 12:27:51,335 INFO L241 Difference]: Finished difference. Result has 115 places, 66 transitions, 289 flow [2021-06-10 12:27:51,336 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=115, PETRI_TRANSITIONS=66} [2021-06-10 12:27:51,336 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 48 predicate places. [2021-06-10 12:27:51,336 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 66 transitions, 289 flow [2021-06-10 12:27:51,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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) [2021-06-10 12:27:51,336 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:51,336 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:51,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:27:51,337 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:51,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1975555061, now seen corresponding path program 2 times [2021-06-10 12:27:51,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:51,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642389883] [2021-06-10 12:27:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:51,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:51,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:51,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:51,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:51,398 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:51,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:51,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:51,416 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:51,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:51,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:51,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:51,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642389883] [2021-06-10 12:27:51,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:51,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:51,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135235416] [2021-06-10 12:27:51,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:51,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:51,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:51,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:51,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:27:51,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 66 transitions, 289 flow. Second operand has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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) [2021-06-10 12:27:51,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:51,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:27:51,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:51,540 INFO L129 PetriNetUnfolder]: 33/220 cut-off events. [2021-06-10 12:27:51,540 INFO L130 PetriNetUnfolder]: For 363/422 co-relation queries the response was YES. [2021-06-10 12:27:51,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 220 events. 33/220 cut-off events. For 363/422 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1146 event pairs, 1 based on Foata normal form. 34/248 useless extension candidates. Maximal degree in co-relation 573. Up to 64 conditions per place. [2021-06-10 12:27:51,542 INFO L132 encePairwiseOnDemand]: 65/73 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2021-06-10 12:27:51,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 66 transitions, 325 flow [2021-06-10 12:27:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:27:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:27:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2021-06-10 12:27:51,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8368617683686177 [2021-06-10 12:27:51,544 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 672 transitions. [2021-06-10 12:27:51,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 672 transitions. [2021-06-10 12:27:51,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:51,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 672 transitions. [2021-06-10 12:27:51,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.09090909090909) internal successors, (672), 11 states have internal predecessors, (672), 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) [2021-06-10 12:27:51,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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) [2021-06-10 12:27:51,548 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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) [2021-06-10 12:27:51,548 INFO L185 Difference]: Start difference. First operand has 115 places, 66 transitions, 289 flow. Second operand 11 states and 672 transitions. [2021-06-10 12:27:51,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 66 transitions, 325 flow [2021-06-10 12:27:51,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 66 transitions, 265 flow, removed 15 selfloop flow, removed 14 redundant places. [2021-06-10 12:27:51,550 INFO L241 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-06-10 12:27:51,550 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-06-10 12:27:51,550 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2021-06-10 12:27:51,551 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-06-10 12:27:51,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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) [2021-06-10 12:27:51,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:27:51,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:27:51 BasicIcfg [2021-06-10 12:27:51,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:27:51,565 INFO L168 Benchmark]: Toolchain (without parser) took 3990.32 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 350.6 MB in the beginning and 446.4 MB in the end (delta: -95.8 MB). Peak memory consumption was 255.9 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:51,565 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 388.0 MB. Free memory is still 368.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:27:51,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.26 ms. Allocated memory is still 388.0 MB. Free memory was 350.4 MB in the beginning and 349.8 MB in the end (delta: 555.6 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:51,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.52 ms. Allocated memory is still 388.0 MB. Free memory was 349.8 MB in the beginning and 347.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:51,567 INFO L168 Benchmark]: Boogie Preprocessor took 13.44 ms. Allocated memory is still 388.0 MB. Free memory was 347.7 MB in the beginning and 346.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:51,567 INFO L168 Benchmark]: RCFGBuilder took 400.69 ms. Allocated memory is still 388.0 MB. Free memory was 346.7 MB in the beginning and 322.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:51,567 INFO L168 Benchmark]: TraceAbstraction took 3211.88 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 322.6 MB in the beginning and 446.4 MB in the end (delta: -123.8 MB). Peak memory consumption was 227.5 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:51,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 388.0 MB. Free memory is still 368.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 335.26 ms. Allocated memory is still 388.0 MB. Free memory was 350.4 MB in the beginning and 349.8 MB in the end (delta: 555.6 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.52 ms. Allocated memory is still 388.0 MB. Free memory was 349.8 MB in the beginning and 347.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.44 ms. Allocated memory is still 388.0 MB. Free memory was 347.7 MB in the beginning and 346.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 400.69 ms. Allocated memory is still 388.0 MB. Free memory was 346.7 MB in the beginning and 322.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3211.88 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 322.6 MB in the beginning and 446.4 MB in the end (delta: -123.8 MB). Peak memory consumption was 227.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3108.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1932.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 64.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 144 SDtfs, 345 SDslu, 453 SDs, 0 SdLazy, 446 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 275.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1043.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=580occurred in iteration=7, InterpolantAutomatonStates: 104, 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: 22.2ms SsaConstructionTime, 138.0ms SatisfiabilityAnalysisTime, 779.3ms InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 1595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...