/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:49:04,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:49:04,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:49:04,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:49:04,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:49:04,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:49:04,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:49:04,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:49:04,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:49:04,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:49:04,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:49:04,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:49:04,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:49:04,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:49:04,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:49:04,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:49:04,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:49:04,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:49:04,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:49:04,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:49:04,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:49:04,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:49:04,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:49:04,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:49:04,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:49:04,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:49:04,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:49:04,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:49:04,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:49:04,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:49:04,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:49:04,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:49:04,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:49:04,713 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:49:04,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:49:04,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:49:04,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:49:04,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:49:04,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:49:04,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:49:04,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:49:04,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:49:04,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:49:04,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:49:04,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:49:04,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:49:04,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:49:04,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:49:04,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:49:04,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:49:04,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:49:05,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:49:05,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:49:05,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:49:05,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:49:05,024 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:49:05,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-03-24 19:49:05,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1d1c977/613ea9a3417b48daa12a6ae67b6b12e3/FLAGed1dd6cd8 [2021-03-24 19:49:05,596 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:49:05,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-03-24 19:49:05,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1d1c977/613ea9a3417b48daa12a6ae67b6b12e3/FLAGed1dd6cd8 [2021-03-24 19:49:06,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1d1c977/613ea9a3417b48daa12a6ae67b6b12e3 [2021-03-24 19:49:06,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:49:06,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:49:06,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:49:06,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:49:06,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:49:06,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619ece59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06, skipping insertion in model container [2021-03-24 19:49:06,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:49:06,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:49:06,270 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/safe002_tso.oepc.i[950,963] [2021-03-24 19:49:06,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:49:06,453 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:49:06,465 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/safe002_tso.oepc.i[950,963] [2021-03-24 19:49:06,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:49:06,571 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:49:06,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06 WrapperNode [2021-03-24 19:49:06,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:49:06,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:49:06,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:49:06,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:49:06,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:49:06,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:49:06,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:49:06,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:49:06,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... [2021-03-24 19:49:06,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:49:06,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:49:06,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:49:06,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:49:06,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:49:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:49:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:49:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:49:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:49:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:49:06,741 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:49:06,742 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:49:06,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:49:06,742 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:49:06,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:49:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:49:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:49:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:49:06,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:49:06,744 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:49:07,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:49:07,050 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:49:07,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:49:07 BoogieIcfgContainer [2021-03-24 19:49:07,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:49:07,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:49:07,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:49:07,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:49:07,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:49:06" (1/3) ... [2021-03-24 19:49:07,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3c36a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:49:07, skipping insertion in model container [2021-03-24 19:49:07,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:06" (2/3) ... [2021-03-24 19:49:07,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3c36a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:49:07, skipping insertion in model container [2021-03-24 19:49:07,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:49:07" (3/3) ... [2021-03-24 19:49:07,059 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-03-24 19:49:07,063 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:49:07,067 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:49:07,068 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:49:07,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,090 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,090 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,091 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,091 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,091 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,093 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,093 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,093 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,094 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,094 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,095 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,095 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,095 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,096 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,102 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,102 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,104 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,104 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:07,106 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:49:07,121 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:49:07,138 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:49:07,138 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:49:07,138 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:49:07,139 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:49:07,139 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:49:07,139 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:49:07,139 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:49:07,139 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:49:07,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:49:07,180 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 19:49:07,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:49:07,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:49:07,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:49:07,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 19:49:07,189 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:49:07,199 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:49:07,202 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:49:07,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 19:49:07,218 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 19:49:07,218 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:49:07,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:49:07,221 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:49:08,879 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-24 19:49:08,925 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 19:49:08,925 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 19:49:08,927 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1739 [2021-03-24 19:49:08,942 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 19:49:08,942 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:49:08,943 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:08,943 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:08,944 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-24 19:49:08,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:08,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665777530] [2021-03-24 19:49:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:09,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,196 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:49:09,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:49:09,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:09,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665777530] [2021-03-24 19:49:09,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:09,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:49:09,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068156154] [2021-03-24 19:49:09,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:49:09,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:09,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:49:09,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:49:09,251 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 116 [2021-03-24 19:49:09,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:09,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 116 [2021-03-24 19:49:09,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:09,362 INFO L129 PetriNetUnfolder]: 87/209 cut-off events. [2021-03-24 19:49:09,362 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:49:09,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 209 events. 87/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 928 event pairs, 2 based on Foata normal form. 25/225 useless extension candidates. Maximal degree in co-relation 374. Up to 73 conditions per place. [2021-03-24 19:49:09,367 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 11 selfloop transitions, 6 changer transitions 14/43 dead transitions. [2021-03-24 19:49:09,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 157 flow [2021-03-24 19:49:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:49:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:49:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 622 transitions. [2021-03-24 19:49:09,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7660098522167488 [2021-03-24 19:49:09,386 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 622 transitions. [2021-03-24 19:49:09,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 622 transitions. [2021-03-24 19:49:09,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:09,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 622 transitions. [2021-03-24 19:49:09,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,402 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 622 transitions. [2021-03-24 19:49:09,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 157 flow [2021-03-24 19:49:09,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:49:09,406 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-24 19:49:09,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-24 19:49:09,409 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 19:49:09,409 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 106 flow [2021-03-24 19:49:09,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,409 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:09,409 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:09,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:49:09,410 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:09,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2134171980, now seen corresponding path program 1 times [2021-03-24 19:49:09,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:09,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435108088] [2021-03-24 19:49:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:09,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:09,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,476 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:49:09,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:49:09,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:09,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435108088] [2021-03-24 19:49:09,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:09,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:49:09,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673541231] [2021-03-24 19:49:09,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:49:09,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:09,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:49:09,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:49:09,522 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 116 [2021-03-24 19:49:09,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:09,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 116 [2021-03-24 19:49:09,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:09,611 INFO L129 PetriNetUnfolder]: 46/141 cut-off events. [2021-03-24 19:49:09,612 INFO L130 PetriNetUnfolder]: For 186/212 co-relation queries the response was YES. [2021-03-24 19:49:09,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 141 events. 46/141 cut-off events. For 186/212 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 627 event pairs, 0 based on Foata normal form. 17/154 useless extension candidates. Maximal degree in co-relation 454. Up to 77 conditions per place. [2021-03-24 19:49:09,616 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 9 selfloop transitions, 7 changer transitions 23/51 dead transitions. [2021-03-24 19:49:09,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 340 flow [2021-03-24 19:49:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:49:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:49:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 619 transitions. [2021-03-24 19:49:09,618 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7623152709359606 [2021-03-24 19:49:09,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 619 transitions. [2021-03-24 19:49:09,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 619 transitions. [2021-03-24 19:49:09,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:09,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 619 transitions. [2021-03-24 19:49:09,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,625 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 106 flow. Second operand 7 states and 619 transitions. [2021-03-24 19:49:09,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 340 flow [2021-03-24 19:49:09,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 331 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 19:49:09,630 INFO L241 Difference]: Finished difference. Result has 44 places, 24 transitions, 124 flow [2021-03-24 19:49:09,630 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2021-03-24 19:49:09,630 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-24 19:49:09,630 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 124 flow [2021-03-24 19:49:09,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,631 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:09,631 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:09,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:49:09,631 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:09,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:09,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1934382806, now seen corresponding path program 1 times [2021-03-24 19:49:09,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:09,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895627214] [2021-03-24 19:49:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:09,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,723 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:49:09,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:49:09,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:09,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895627214] [2021-03-24 19:49:09,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:09,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:49:09,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716301768] [2021-03-24 19:49:09,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:49:09,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:09,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:49:09,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:49:09,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 116 [2021-03-24 19:49:09,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:09,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 116 [2021-03-24 19:49:09,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:09,784 INFO L129 PetriNetUnfolder]: 16/63 cut-off events. [2021-03-24 19:49:09,785 INFO L130 PetriNetUnfolder]: For 118/123 co-relation queries the response was YES. [2021-03-24 19:49:09,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 63 events. 16/63 cut-off events. For 118/123 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 167 event pairs, 3 based on Foata normal form. 4/66 useless extension candidates. Maximal degree in co-relation 232. Up to 31 conditions per place. [2021-03-24 19:49:09,786 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 9 selfloop transitions, 8 changer transitions 3/32 dead transitions. [2021-03-24 19:49:09,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 32 transitions, 224 flow [2021-03-24 19:49:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:49:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:49:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 524 transitions. [2021-03-24 19:49:09,788 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7528735632183908 [2021-03-24 19:49:09,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 524 transitions. [2021-03-24 19:49:09,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 524 transitions. [2021-03-24 19:49:09,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:09,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 524 transitions. [2021-03-24 19:49:09,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,796 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,796 INFO L185 Difference]: Start difference. First operand has 44 places, 24 transitions, 124 flow. Second operand 6 states and 524 transitions. [2021-03-24 19:49:09,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 32 transitions, 224 flow [2021-03-24 19:49:09,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 174 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-24 19:49:09,802 INFO L241 Difference]: Finished difference. Result has 44 places, 28 transitions, 156 flow [2021-03-24 19:49:09,802 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2021-03-24 19:49:09,803 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-24 19:49:09,803 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 156 flow [2021-03-24 19:49:09,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,803 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:09,803 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:09,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:49:09,803 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash 223576107, now seen corresponding path program 1 times [2021-03-24 19:49:09,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:09,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148329703] [2021-03-24 19:49:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:09,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:09,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,849 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:49:09,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:49:09,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:09,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148329703] [2021-03-24 19:49:09,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:09,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:49:09,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782046606] [2021-03-24 19:49:09,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:49:09,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:09,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:49:09,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:49:09,864 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 116 [2021-03-24 19:49:09,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:09,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 116 [2021-03-24 19:49:09,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:09,900 INFO L129 PetriNetUnfolder]: 12/57 cut-off events. [2021-03-24 19:49:09,900 INFO L130 PetriNetUnfolder]: For 98/113 co-relation queries the response was YES. [2021-03-24 19:49:09,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 57 events. 12/57 cut-off events. For 98/113 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 145 event pairs, 3 based on Foata normal form. 11/67 useless extension candidates. Maximal degree in co-relation 204. Up to 26 conditions per place. [2021-03-24 19:49:09,901 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 12 selfloop transitions, 7 changer transitions 4/35 dead transitions. [2021-03-24 19:49:09,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 260 flow [2021-03-24 19:49:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:49:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:49:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 523 transitions. [2021-03-24 19:49:09,903 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7514367816091954 [2021-03-24 19:49:09,903 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 523 transitions. [2021-03-24 19:49:09,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 523 transitions. [2021-03-24 19:49:09,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:09,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 523 transitions. [2021-03-24 19:49:09,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,906 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,906 INFO L185 Difference]: Start difference. First operand has 44 places, 28 transitions, 156 flow. Second operand 6 states and 523 transitions. [2021-03-24 19:49:09,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 260 flow [2021-03-24 19:49:09,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 249 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 19:49:09,908 INFO L241 Difference]: Finished difference. Result has 48 places, 29 transitions, 184 flow [2021-03-24 19:49:09,908 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2021-03-24 19:49:09,908 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-24 19:49:09,908 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 184 flow [2021-03-24 19:49:09,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:09,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:09,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:49:09,909 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash -640069767, now seen corresponding path program 1 times [2021-03-24 19:49:09,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:09,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294023426] [2021-03-24 19:49:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:09,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:09,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:09,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294023426] [2021-03-24 19:49:09,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:09,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:49:09,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466727621] [2021-03-24 19:49:09,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:49:09,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:09,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:49:09,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:49:09,950 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-24 19:49:09,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:09,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-24 19:49:09,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:09,984 INFO L129 PetriNetUnfolder]: 11/61 cut-off events. [2021-03-24 19:49:09,984 INFO L130 PetriNetUnfolder]: For 148/158 co-relation queries the response was YES. [2021-03-24 19:49:09,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 61 events. 11/61 cut-off events. For 148/158 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 4 based on Foata normal form. 5/65 useless extension candidates. Maximal degree in co-relation 237. Up to 28 conditions per place. [2021-03-24 19:49:09,985 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 7 selfloop transitions, 5 changer transitions 7/33 dead transitions. [2021-03-24 19:49:09,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 33 transitions, 264 flow [2021-03-24 19:49:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:49:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:49:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-24 19:49:09,986 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7810344827586206 [2021-03-24 19:49:09,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-24 19:49:09,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-24 19:49:09,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:09,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-24 19:49:09,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,989 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,989 INFO L185 Difference]: Start difference. First operand has 48 places, 29 transitions, 184 flow. Second operand 5 states and 453 transitions. [2021-03-24 19:49:09,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 33 transitions, 264 flow [2021-03-24 19:49:09,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 245 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 19:49:09,991 INFO L241 Difference]: Finished difference. Result has 49 places, 26 transitions, 162 flow [2021-03-24 19:49:09,991 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=49, PETRI_TRANSITIONS=26} [2021-03-24 19:49:09,992 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-24 19:49:09,992 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 26 transitions, 162 flow [2021-03-24 19:49:09,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:09,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:09,992 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:09,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:49:09,992 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:09,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2066078221, now seen corresponding path program 2 times [2021-03-24 19:49:09,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:09,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955064669] [2021-03-24 19:49:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:10,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:10,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955064669] [2021-03-24 19:49:10,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:10,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:49:10,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432783758] [2021-03-24 19:49:10,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:49:10,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:10,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:49:10,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:49:10,055 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:49:10,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 26 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:10,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:49:10,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:10,089 INFO L129 PetriNetUnfolder]: 48/123 cut-off events. [2021-03-24 19:49:10,089 INFO L130 PetriNetUnfolder]: For 442/464 co-relation queries the response was YES. [2021-03-24 19:49:10,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 123 events. 48/123 cut-off events. For 442/464 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 473 event pairs, 21 based on Foata normal form. 13/130 useless extension candidates. Maximal degree in co-relation 367. Up to 63 conditions per place. [2021-03-24 19:49:10,093 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 7 selfloop transitions, 7 changer transitions 2/36 dead transitions. [2021-03-24 19:49:10,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 36 transitions, 214 flow [2021-03-24 19:49:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:49:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:49:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-24 19:49:10,095 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7724137931034483 [2021-03-24 19:49:10,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-24 19:49:10,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-24 19:49:10,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:10,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-24 19:49:10,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,100 INFO L185 Difference]: Start difference. First operand has 49 places, 26 transitions, 162 flow. Second operand 5 states and 448 transitions. [2021-03-24 19:49:10,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 36 transitions, 214 flow [2021-03-24 19:49:10,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 188 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-24 19:49:10,103 INFO L241 Difference]: Finished difference. Result has 48 places, 32 transitions, 190 flow [2021-03-24 19:49:10,103 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2021-03-24 19:49:10,104 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-24 19:49:10,104 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 190 flow [2021-03-24 19:49:10,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,104 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:10,104 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:10,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:49:10,104 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:10,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:10,105 INFO L82 PathProgramCache]: Analyzing trace with hash -376145514, now seen corresponding path program 1 times [2021-03-24 19:49:10,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:10,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549164347] [2021-03-24 19:49:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:10,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,161 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:49:10,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:49:10,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:10,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549164347] [2021-03-24 19:49:10,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:10,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:49:10,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369835117] [2021-03-24 19:49:10,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:49:10,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:49:10,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:49:10,175 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:49:10,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:10,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:49:10,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:10,235 INFO L129 PetriNetUnfolder]: 32/101 cut-off events. [2021-03-24 19:49:10,235 INFO L130 PetriNetUnfolder]: For 390/507 co-relation queries the response was YES. [2021-03-24 19:49:10,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 101 events. 32/101 cut-off events. For 390/507 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 393 event pairs, 4 based on Foata normal form. 41/137 useless extension candidates. Maximal degree in co-relation 375. Up to 61 conditions per place. [2021-03-24 19:49:10,236 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 5 selfloop transitions, 13 changer transitions 4/42 dead transitions. [2021-03-24 19:49:10,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 292 flow [2021-03-24 19:49:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:49:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:49:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2021-03-24 19:49:10,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.770935960591133 [2021-03-24 19:49:10,238 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2021-03-24 19:49:10,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2021-03-24 19:49:10,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:10,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2021-03-24 19:49:10,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,242 INFO L185 Difference]: Start difference. First operand has 48 places, 32 transitions, 190 flow. Second operand 7 states and 626 transitions. [2021-03-24 19:49:10,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 292 flow [2021-03-24 19:49:10,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:49:10,244 INFO L241 Difference]: Finished difference. Result has 56 places, 38 transitions, 274 flow [2021-03-24 19:49:10,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2021-03-24 19:49:10,244 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-24 19:49:10,244 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 274 flow [2021-03-24 19:49:10,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,244 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:10,244 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:49:10,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:49:10,245 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:10,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1224270447, now seen corresponding path program 1 times [2021-03-24 19:49:10,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:10,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654426475] [2021-03-24 19:49:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:10,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,326 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:49:10,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:49:10,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:10,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654426475] [2021-03-24 19:49:10,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:10,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:49:10,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399059145] [2021-03-24 19:49:10,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:49:10,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:10,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:49:10,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:49:10,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:49:10,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:10,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:49:10,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:10,400 INFO L129 PetriNetUnfolder]: 20/81 cut-off events. [2021-03-24 19:49:10,401 INFO L130 PetriNetUnfolder]: For 445/590 co-relation queries the response was YES. [2021-03-24 19:49:10,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 81 events. 20/81 cut-off events. For 445/590 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 304 event pairs, 0 based on Foata normal form. 52/130 useless extension candidates. Maximal degree in co-relation 370. Up to 50 conditions per place. [2021-03-24 19:49:10,402 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 2 selfloop transitions, 17 changer transitions 3/42 dead transitions. [2021-03-24 19:49:10,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 42 transitions, 350 flow [2021-03-24 19:49:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:49:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:49:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 798 transitions. [2021-03-24 19:49:10,404 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-03-24 19:49:10,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 798 transitions. [2021-03-24 19:49:10,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 798 transitions. [2021-03-24 19:49:10,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:10,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 798 transitions. [2021-03-24 19:49:10,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,409 INFO L185 Difference]: Start difference. First operand has 56 places, 38 transitions, 274 flow. Second operand 9 states and 798 transitions. [2021-03-24 19:49:10,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 42 transitions, 350 flow [2021-03-24 19:49:10,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 42 transitions, 318 flow, removed 12 selfloop flow, removed 2 redundant places. [2021-03-24 19:49:10,414 INFO L241 Difference]: Finished difference. Result has 65 places, 39 transitions, 298 flow [2021-03-24 19:49:10,414 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=65, PETRI_TRANSITIONS=39} [2021-03-24 19:49:10,414 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2021-03-24 19:49:10,414 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 39 transitions, 298 flow [2021-03-24 19:49:10,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:10,415 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] [2021-03-24 19:49:10,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:49:10,415 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:10,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1951182212, now seen corresponding path program 1 times [2021-03-24 19:49:10,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:10,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975788581] [2021-03-24 19:49:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:10,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:10,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,469 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:49:10,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:49:10,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:10,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975788581] [2021-03-24 19:49:10,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:10,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:49:10,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375247010] [2021-03-24 19:49:10,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:49:10,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:10,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:49:10,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:49:10,487 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 116 [2021-03-24 19:49:10,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 39 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:10,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 116 [2021-03-24 19:49:10,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:10,540 INFO L129 PetriNetUnfolder]: 22/97 cut-off events. [2021-03-24 19:49:10,540 INFO L130 PetriNetUnfolder]: For 377/416 co-relation queries the response was YES. [2021-03-24 19:49:10,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 97 events. 22/97 cut-off events. For 377/416 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 403 event pairs, 0 based on Foata normal form. 5/99 useless extension candidates. Maximal degree in co-relation 417. Up to 36 conditions per place. [2021-03-24 19:49:10,543 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 7 selfloop transitions, 8 changer transitions 4/43 dead transitions. [2021-03-24 19:49:10,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 43 transitions, 385 flow [2021-03-24 19:49:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:49:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:49:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 502 transitions. [2021-03-24 19:49:10,545 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7212643678160919 [2021-03-24 19:49:10,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 502 transitions. [2021-03-24 19:49:10,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 502 transitions. [2021-03-24 19:49:10,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:10,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 502 transitions. [2021-03-24 19:49:10,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,548 INFO L185 Difference]: Start difference. First operand has 65 places, 39 transitions, 298 flow. Second operand 6 states and 502 transitions. [2021-03-24 19:49:10,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 43 transitions, 385 flow [2021-03-24 19:49:10,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 317 flow, removed 19 selfloop flow, removed 9 redundant places. [2021-03-24 19:49:10,552 INFO L241 Difference]: Finished difference. Result has 63 places, 39 transitions, 274 flow [2021-03-24 19:49:10,552 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2021-03-24 19:49:10,553 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-24 19:49:10,553 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 274 flow [2021-03-24 19:49:10,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,553 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:49:10,553 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] [2021-03-24 19:49:10,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:49:10,553 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:49:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:49:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash -902684198, now seen corresponding path program 2 times [2021-03-24 19:49:10,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:49:10,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262204113] [2021-03-24 19:49:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:49:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:49:10,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:49:10,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,613 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:49:10,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:49:10,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:49:10,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:49:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:49:10,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262204113] [2021-03-24 19:49:10,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:49:10,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:49:10,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027437682] [2021-03-24 19:49:10,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:49:10,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:49:10,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:49:10,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:49:10,631 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 116 [2021-03-24 19:49:10,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:49:10,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 116 [2021-03-24 19:49:10,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:49:10,664 INFO L129 PetriNetUnfolder]: 19/86 cut-off events. [2021-03-24 19:49:10,664 INFO L130 PetriNetUnfolder]: For 161/180 co-relation queries the response was YES. [2021-03-24 19:49:10,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 86 events. 19/86 cut-off events. For 161/180 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 345 event pairs, 0 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 319. Up to 23 conditions per place. [2021-03-24 19:49:10,665 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2021-03-24 19:49:10,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 39 transitions, 306 flow [2021-03-24 19:49:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:49:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:49:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2021-03-24 19:49:10,667 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7376847290640394 [2021-03-24 19:49:10,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2021-03-24 19:49:10,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2021-03-24 19:49:10,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:49:10,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2021-03-24 19:49:10,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,670 INFO L185 Difference]: Start difference. First operand has 63 places, 39 transitions, 274 flow. Second operand 7 states and 599 transitions. [2021-03-24 19:49:10,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 39 transitions, 306 flow [2021-03-24 19:49:10,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 39 transitions, 293 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 19:49:10,673 INFO L241 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2021-03-24 19:49:10,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2021-03-24 19:49:10,673 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-24 19:49:10,673 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2021-03-24 19:49:10,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:49:10,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:49:10,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:49:10 BasicIcfg [2021-03-24 19:49:10,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:49:10,680 INFO L168 Benchmark]: Toolchain (without parser) took 4581.68 ms. Allocated memory is still 346.0 MB. Free memory was 309.5 MB in the beginning and 128.1 MB in the end (delta: 181.4 MB). Peak memory consumption was 184.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:49:10,680 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 327.5 MB in the beginning and 327.4 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:49:10,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.87 ms. Allocated memory is still 346.0 MB. Free memory was 309.2 MB in the beginning and 307.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:49:10,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.56 ms. Allocated memory is still 346.0 MB. Free memory was 307.9 MB in the beginning and 305.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:49:10,683 INFO L168 Benchmark]: Boogie Preprocessor took 31.05 ms. Allocated memory is still 346.0 MB. Free memory was 305.8 MB in the beginning and 304.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:49:10,685 INFO L168 Benchmark]: RCFGBuilder took 386.40 ms. Allocated memory is still 346.0 MB. Free memory was 304.4 MB in the beginning and 280.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:49:10,685 INFO L168 Benchmark]: TraceAbstraction took 3623.91 ms. Allocated memory is still 346.0 MB. Free memory was 279.6 MB in the beginning and 128.1 MB in the end (delta: 151.5 MB). Peak memory consumption was 153.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:49:10,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 327.5 MB in the beginning and 327.4 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 469.87 ms. Allocated memory is still 346.0 MB. Free memory was 309.2 MB in the beginning and 307.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 60.56 ms. Allocated memory is still 346.0 MB. Free memory was 307.9 MB in the beginning and 305.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.05 ms. Allocated memory is still 346.0 MB. Free memory was 305.8 MB in the beginning and 304.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 386.40 ms. Allocated memory is still 346.0 MB. Free memory was 304.4 MB in the beginning and 280.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3623.91 ms. Allocated memory is still 346.0 MB. Free memory was 279.6 MB in the beginning and 128.1 MB in the end (delta: 151.5 MB). Peak memory consumption was 153.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1723.1ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 692, positive: 645, positive conditional: 0, positive unconditional: 645, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 546, positive: 521, positive conditional: 0, positive unconditional: 521, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 546, positive: 521, positive conditional: 0, positive unconditional: 521, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 546, positive: 521, positive conditional: 0, positive unconditional: 521, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 83, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 692, positive: 124, positive conditional: 0, positive unconditional: 124, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 546, unknown conditional: 0, unknown unconditional: 546] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3539.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 733.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1795.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 76 SDslu, 94 SDs, 0 SdLazy, 194 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 151.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 277.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=8, InterpolantAutomatonStates: 65, 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: 27.4ms SsaConstructionTime, 195.7ms SatisfiabilityAnalysisTime, 603.7ms InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 691 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...