/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:36:42,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:36:42,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:36:43,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:36:43,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:36:43,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:36:43,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:36:43,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:36:43,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:36:43,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:36:43,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:36:43,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:36:43,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:36:43,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:36:43,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:36:43,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:36:43,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:36:43,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:36:43,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:36:43,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:36:43,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:36:43,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:36:43,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:36:43,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:36:43,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:36:43,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:36:43,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:36:43,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:36:43,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:36:43,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:36:43,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:36:43,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:36:43,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:36:43,077 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:36:43,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:36:43,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:36:43,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:36:43,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:36:43,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:36:43,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:36:43,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:36:43,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:36:43,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:36:43,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:36:43,078 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:36:43,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:36:43,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:36:43,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:36:43,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:36:43,080 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:36:43,080 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:36:43,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:36:43,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:36:43,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:36:43,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:36:43,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:36:43,332 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:36:43,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2021-03-11 02:36:43,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dae446aa9/4012bc4118a0411db4da7d2f11487025/FLAG27a18392f [2021-03-11 02:36:43,835 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:36:43,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2021-03-11 02:36:43,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dae446aa9/4012bc4118a0411db4da7d2f11487025/FLAG27a18392f [2021-03-11 02:36:43,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dae446aa9/4012bc4118a0411db4da7d2f11487025 [2021-03-11 02:36:43,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:36:43,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:36:43,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:36:43,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:36:43,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:36:43,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:36:43" (1/1) ... [2021-03-11 02:36:43,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bac9a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:43, skipping insertion in model container [2021-03-11 02:36:43,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:36:43" (1/1) ... [2021-03-11 02:36:43,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:36:43,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:36:44,036 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/safe028_pso.opt.i[949,962] [2021-03-11 02:36:44,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:36:44,149 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:36:44,155 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/safe028_pso.opt.i[949,962] [2021-03-11 02:36:44,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:36:44,212 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:36:44,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44 WrapperNode [2021-03-11 02:36:44,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:36:44,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:36:44,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:36:44,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:36:44,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:36:44,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:36:44,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:36:44,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:36:44,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... [2021-03-11 02:36:44,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:36:44,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:36:44,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:36:44,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:36:44,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:36:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:36:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:36:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:36:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:36:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:36:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:36:44,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:36:44,523 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:36:44,523 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:36:44,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:36:44 BoogieIcfgContainer [2021-03-11 02:36:44,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:36:44,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:36:44,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:36:44,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:36:44,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:36:43" (1/3) ... [2021-03-11 02:36:44,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9863e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:36:44, skipping insertion in model container [2021-03-11 02:36:44,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:44" (2/3) ... [2021-03-11 02:36:44,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9863e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:36:44, skipping insertion in model container [2021-03-11 02:36:44,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:36:44" (3/3) ... [2021-03-11 02:36:44,529 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2021-03-11 02:36:44,532 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:36:44,535 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:36:44,535 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:36:44,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,551 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,551 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,551 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,551 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,552 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,553 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,555 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,555 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,555 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,556 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,559 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,560 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,560 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,561 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,561 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:44,562 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:36:44,573 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:36:44,585 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:36:44,585 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:36:44,585 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:36:44,585 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:36:44,585 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:36:44,586 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:36:44,586 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:36:44,586 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:36:44,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:36:44,614 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 02:36:44,614 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:44,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 02:36:44,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:36:44,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 02:36:44,647 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 02:36:44,647 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:44,647 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:44,648 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:44,648 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:44,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:44,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1739866515, now seen corresponding path program 1 times [2021-03-11 02:36:44,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:44,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407989685] [2021-03-11 02:36:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:44,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:44,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:44,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:44,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:44,898 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:44,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:44,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:44,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:44,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:44,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:44,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:44,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:44,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407989685] [2021-03-11 02:36:44,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:44,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:36:44,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466388434] [2021-03-11 02:36:44,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:36:44,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:44,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:36:44,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:36:44,960 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 74 [2021-03-11 02:36:44,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:44,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:44,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 74 [2021-03-11 02:36:44,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:45,076 INFO L129 PetriNetUnfolder]: 3/81 cut-off events. [2021-03-11 02:36:45,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:45,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 81 events. 3/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2021-03-11 02:36:45,081 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 6 selfloop transitions, 2 changer transitions 11/68 dead transitions. [2021-03-11 02:36:45,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 181 flow [2021-03-11 02:36:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:36:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:36:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 580 transitions. [2021-03-11 02:36:45,096 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8708708708708709 [2021-03-11 02:36:45,096 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 580 transitions. [2021-03-11 02:36:45,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 580 transitions. [2021-03-11 02:36:45,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:45,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 580 transitions. [2021-03-11 02:36:45,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.44444444444444) internal successors, (580), 9 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,110 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,111 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 9 states and 580 transitions. [2021-03-11 02:36:45,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 181 flow [2021-03-11 02:36:45,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:36:45,116 INFO L241 Difference]: Finished difference. Result has 80 places, 57 transitions, 140 flow [2021-03-11 02:36:45,118 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=140, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2021-03-11 02:36:45,118 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2021-03-11 02:36:45,118 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 140 flow [2021-03-11 02:36:45,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,119 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:45,119 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:45,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:36:45,119 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:45,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1757320718, now seen corresponding path program 1 times [2021-03-11 02:36:45,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:45,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484525352] [2021-03-11 02:36:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:45,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:45,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:45,163 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:36:45,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:36:45,170 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:45,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:45,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:45,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:45,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:45,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484525352] [2021-03-11 02:36:45,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:45,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:45,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834886724] [2021-03-11 02:36:45,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:45,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:45,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:45,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:45,210 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:36:45,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:45,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:36:45,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:45,506 INFO L129 PetriNetUnfolder]: 110/359 cut-off events. [2021-03-11 02:36:45,506 INFO L130 PetriNetUnfolder]: For 104/132 co-relation queries the response was YES. [2021-03-11 02:36:45,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 359 events. 110/359 cut-off events. For 104/132 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1879 event pairs, 6 based on Foata normal form. 10/362 useless extension candidates. Maximal degree in co-relation 643. Up to 74 conditions per place. [2021-03-11 02:36:45,510 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 17 selfloop transitions, 10 changer transitions 44/114 dead transitions. [2021-03-11 02:36:45,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 449 flow [2021-03-11 02:36:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 02:36:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 02:36:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1027 transitions. [2021-03-11 02:36:45,514 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8163751987281399 [2021-03-11 02:36:45,514 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1027 transitions. [2021-03-11 02:36:45,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1027 transitions. [2021-03-11 02:36:45,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:45,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1027 transitions. [2021-03-11 02:36:45,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 60.411764705882355) internal successors, (1027), 17 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,519 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,519 INFO L185 Difference]: Start difference. First operand has 80 places, 57 transitions, 140 flow. Second operand 17 states and 1027 transitions. [2021-03-11 02:36:45,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 449 flow [2021-03-11 02:36:45,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 387 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-03-11 02:36:45,524 INFO L241 Difference]: Finished difference. Result has 96 places, 63 transitions, 233 flow [2021-03-11 02:36:45,524 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=233, PETRI_PLACES=96, PETRI_TRANSITIONS=63} [2021-03-11 02:36:45,525 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 28 predicate places. [2021-03-11 02:36:45,525 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 233 flow [2021-03-11 02:36:45,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,525 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:45,525 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:45,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:36:45,526 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:45,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:45,526 INFO L82 PathProgramCache]: Analyzing trace with hash -25252147, now seen corresponding path program 1 times [2021-03-11 02:36:45,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:45,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857365504] [2021-03-11 02:36:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:45,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:45,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:45,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:45,608 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:45,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:45,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:45,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:45,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:45,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857365504] [2021-03-11 02:36:45,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:45,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:45,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318093237] [2021-03-11 02:36:45,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:45,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:45,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:45,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:45,640 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 74 [2021-03-11 02:36:45,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 63 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 60.285714285714285) internal successors, (422), 7 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:45,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 74 [2021-03-11 02:36:45,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:45,758 INFO L129 PetriNetUnfolder]: 53/201 cut-off events. [2021-03-11 02:36:45,758 INFO L130 PetriNetUnfolder]: For 1253/1355 co-relation queries the response was YES. [2021-03-11 02:36:45,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 201 events. 53/201 cut-off events. For 1253/1355 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 806 event pairs, 9 based on Foata normal form. 8/203 useless extension candidates. Maximal degree in co-relation 792. Up to 57 conditions per place. [2021-03-11 02:36:45,763 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 9 selfloop transitions, 4 changer transitions 23/82 dead transitions. [2021-03-11 02:36:45,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 82 transitions, 520 flow [2021-03-11 02:36:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:36:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:36:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 623 transitions. [2021-03-11 02:36:45,765 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8418918918918918 [2021-03-11 02:36:45,765 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 623 transitions. [2021-03-11 02:36:45,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 623 transitions. [2021-03-11 02:36:45,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:45,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 623 transitions. [2021-03-11 02:36:45,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,768 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,768 INFO L185 Difference]: Start difference. First operand has 96 places, 63 transitions, 233 flow. Second operand 10 states and 623 transitions. [2021-03-11 02:36:45,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 82 transitions, 520 flow [2021-03-11 02:36:45,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 409 flow, removed 51 selfloop flow, removed 10 redundant places. [2021-03-11 02:36:45,774 INFO L241 Difference]: Finished difference. Result has 91 places, 57 transitions, 194 flow [2021-03-11 02:36:45,774 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=91, PETRI_TRANSITIONS=57} [2021-03-11 02:36:45,774 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2021-03-11 02:36:45,774 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 57 transitions, 194 flow [2021-03-11 02:36:45,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.285714285714285) internal successors, (422), 7 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,774 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:45,774 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:45,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:36:45,774 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:45,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1161717101, now seen corresponding path program 1 times [2021-03-11 02:36:45,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:45,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308261495] [2021-03-11 02:36:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:45,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:45,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:45,829 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:36:45,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:36:45,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:36:45,846 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:36:45,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:45,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:45,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:45,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308261495] [2021-03-11 02:36:45,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:45,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:36:45,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703753753] [2021-03-11 02:36:45,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:36:45,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:45,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:36:45,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:36:45,854 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:36:45,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 57 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:45,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:36:45,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:45,966 INFO L129 PetriNetUnfolder]: 150/418 cut-off events. [2021-03-11 02:36:45,966 INFO L130 PetriNetUnfolder]: For 601/626 co-relation queries the response was YES. [2021-03-11 02:36:45,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 418 events. 150/418 cut-off events. For 601/626 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2291 event pairs, 49 based on Foata normal form. 10/407 useless extension candidates. Maximal degree in co-relation 996. Up to 106 conditions per place. [2021-03-11 02:36:45,969 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 17 selfloop transitions, 14 changer transitions 4/82 dead transitions. [2021-03-11 02:36:45,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 314 flow [2021-03-11 02:36:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:36:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:36:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 577 transitions. [2021-03-11 02:36:45,970 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8663663663663663 [2021-03-11 02:36:45,970 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 577 transitions. [2021-03-11 02:36:45,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 577 transitions. [2021-03-11 02:36:45,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:45,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 577 transitions. [2021-03-11 02:36:45,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.11111111111111) internal successors, (577), 9 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,973 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,973 INFO L185 Difference]: Start difference. First operand has 91 places, 57 transitions, 194 flow. Second operand 9 states and 577 transitions. [2021-03-11 02:36:45,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 314 flow [2021-03-11 02:36:45,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 274 flow, removed 12 selfloop flow, removed 14 redundant places. [2021-03-11 02:36:45,976 INFO L241 Difference]: Finished difference. Result has 83 places, 69 transitions, 254 flow [2021-03-11 02:36:45,976 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2021-03-11 02:36:45,977 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2021-03-11 02:36:45,977 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 254 flow [2021-03-11 02:36:45,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:45,977 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:45,977 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:45,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:36:45,977 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:45,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1249818113, now seen corresponding path program 1 times [2021-03-11 02:36:45,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:45,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628689770] [2021-03-11 02:36:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:46,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,012 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:36:46,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:36:46,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:36:46,032 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:36:46,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:46,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:46,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628689770] [2021-03-11 02:36:46,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:46,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:46,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995648505] [2021-03-11 02:36:46,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:46,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:46,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:46,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:46,052 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:36:46,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:46,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:36:46,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:46,212 INFO L129 PetriNetUnfolder]: 118/356 cut-off events. [2021-03-11 02:36:46,212 INFO L130 PetriNetUnfolder]: For 761/930 co-relation queries the response was YES. [2021-03-11 02:36:46,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 356 events. 118/356 cut-off events. For 761/930 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1957 event pairs, 9 based on Foata normal form. 35/375 useless extension candidates. Maximal degree in co-relation 1106. Up to 125 conditions per place. [2021-03-11 02:36:46,214 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 15 selfloop transitions, 27 changer transitions 8/97 dead transitions. [2021-03-11 02:36:46,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 535 flow [2021-03-11 02:36:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 02:36:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 02:36:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 768 transitions. [2021-03-11 02:36:46,215 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2021-03-11 02:36:46,216 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 768 transitions. [2021-03-11 02:36:46,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 768 transitions. [2021-03-11 02:36:46,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:46,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 768 transitions. [2021-03-11 02:36:46,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,220 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,220 INFO L185 Difference]: Start difference. First operand has 83 places, 69 transitions, 254 flow. Second operand 12 states and 768 transitions. [2021-03-11 02:36:46,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 535 flow [2021-03-11 02:36:46,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 02:36:46,225 INFO L241 Difference]: Finished difference. Result has 98 places, 85 transitions, 465 flow [2021-03-11 02:36:46,225 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=465, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2021-03-11 02:36:46,225 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 30 predicate places. [2021-03-11 02:36:46,225 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 465 flow [2021-03-11 02:36:46,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,226 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:46,226 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:46,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:36:46,227 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:46,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1993346048, now seen corresponding path program 1 times [2021-03-11 02:36:46,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:46,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100929136] [2021-03-11 02:36:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:46,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,299 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:36:46,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:36:46,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:36:46,320 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:36:46,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:46,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:46,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100929136] [2021-03-11 02:36:46,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:46,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:36:46,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475198992] [2021-03-11 02:36:46,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:36:46,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:46,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:36:46,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:36:46,330 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:36:46,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 465 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:46,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:36:46,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:46,533 INFO L129 PetriNetUnfolder]: 81/301 cut-off events. [2021-03-11 02:36:46,534 INFO L130 PetriNetUnfolder]: For 1365/1769 co-relation queries the response was YES. [2021-03-11 02:36:46,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 301 events. 81/301 cut-off events. For 1365/1769 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1661 event pairs, 1 based on Foata normal form. 46/332 useless extension candidates. Maximal degree in co-relation 1157. Up to 97 conditions per place. [2021-03-11 02:36:46,537 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 10 selfloop transitions, 32 changer transitions 15/104 dead transitions. [2021-03-11 02:36:46,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 717 flow [2021-03-11 02:36:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 02:36:46,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 02:36:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 947 transitions. [2021-03-11 02:36:46,539 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8531531531531531 [2021-03-11 02:36:46,539 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 947 transitions. [2021-03-11 02:36:46,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 947 transitions. [2021-03-11 02:36:46,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:46,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 947 transitions. [2021-03-11 02:36:46,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 63.13333333333333) internal successors, (947), 15 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,543 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,543 INFO L185 Difference]: Start difference. First operand has 98 places, 85 transitions, 465 flow. Second operand 15 states and 947 transitions. [2021-03-11 02:36:46,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 717 flow [2021-03-11 02:36:46,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 104 transitions, 637 flow, removed 32 selfloop flow, removed 5 redundant places. [2021-03-11 02:36:46,549 INFO L241 Difference]: Finished difference. Result has 113 places, 86 transitions, 493 flow [2021-03-11 02:36:46,549 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=493, PETRI_PLACES=113, PETRI_TRANSITIONS=86} [2021-03-11 02:36:46,549 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 45 predicate places. [2021-03-11 02:36:46,549 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 86 transitions, 493 flow [2021-03-11 02:36:46,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,549 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:46,549 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:46,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:36:46,549 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:46,550 INFO L82 PathProgramCache]: Analyzing trace with hash 9529290, now seen corresponding path program 1 times [2021-03-11 02:36:46,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:46,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322055241] [2021-03-11 02:36:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:46,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,611 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:36:46,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:36:46,619 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:46,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:46,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:46,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:46,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:46,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322055241] [2021-03-11 02:36:46,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:46,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:36:46,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435956818] [2021-03-11 02:36:46,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:36:46,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:46,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:36:46,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:36:46,658 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:36:46,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 86 transitions, 493 flow. Second operand has 8 states, 8 states have (on average 57.75) internal successors, (462), 8 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:46,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:36:46,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:46,742 INFO L129 PetriNetUnfolder]: 91/425 cut-off events. [2021-03-11 02:36:46,742 INFO L130 PetriNetUnfolder]: For 1282/1340 co-relation queries the response was YES. [2021-03-11 02:36:46,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 425 events. 91/425 cut-off events. For 1282/1340 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3054 event pairs, 0 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1383. Up to 71 conditions per place. [2021-03-11 02:36:46,744 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 11 selfloop transitions, 3 changer transitions 30/93 dead transitions. [2021-03-11 02:36:46,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 93 transitions, 566 flow [2021-03-11 02:36:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:36:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:36:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2021-03-11 02:36:46,746 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.793918918918919 [2021-03-11 02:36:46,746 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2021-03-11 02:36:46,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2021-03-11 02:36:46,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:46,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2021-03-11 02:36:46,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,748 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,748 INFO L185 Difference]: Start difference. First operand has 113 places, 86 transitions, 493 flow. Second operand 8 states and 470 transitions. [2021-03-11 02:36:46,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 93 transitions, 566 flow [2021-03-11 02:36:46,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 445 flow, removed 27 selfloop flow, removed 18 redundant places. [2021-03-11 02:36:46,756 INFO L241 Difference]: Finished difference. Result has 105 places, 63 transitions, 231 flow [2021-03-11 02:36:46,756 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=231, PETRI_PLACES=105, PETRI_TRANSITIONS=63} [2021-03-11 02:36:46,756 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 37 predicate places. [2021-03-11 02:36:46,756 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 63 transitions, 231 flow [2021-03-11 02:36:46,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.75) internal successors, (462), 8 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,756 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:46,756 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:46,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:36:46,757 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:46,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:46,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1249080542, now seen corresponding path program 2 times [2021-03-11 02:36:46,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:46,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26168504] [2021-03-11 02:36:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:36:46,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:36:46,786 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:36:46,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:36:46,794 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:36:46,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:36:46,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:46,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:36:46,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:36:46,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:36:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:36:46,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26168504] [2021-03-11 02:36:46,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:36:46,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:36:46,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960860352] [2021-03-11 02:36:46,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:36:46,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:36:46,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:36:46,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:36:46,823 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:36:46,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 63 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:36:46,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:36:46,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:36:46,890 INFO L129 PetriNetUnfolder]: 9/103 cut-off events. [2021-03-11 02:36:46,890 INFO L130 PetriNetUnfolder]: For 71/78 co-relation queries the response was YES. [2021-03-11 02:36:46,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 103 events. 9/103 cut-off events. For 71/78 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 0 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 206. Up to 14 conditions per place. [2021-03-11 02:36:46,891 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-03-11 02:36:46,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 63 transitions, 262 flow [2021-03-11 02:36:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:36:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:36:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 464 transitions. [2021-03-11 02:36:46,892 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7837837837837838 [2021-03-11 02:36:46,892 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 464 transitions. [2021-03-11 02:36:46,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 464 transitions. [2021-03-11 02:36:46,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:36:46,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 464 transitions. [2021-03-11 02:36:46,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,894 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,895 INFO L185 Difference]: Start difference. First operand has 105 places, 63 transitions, 231 flow. Second operand 8 states and 464 transitions. [2021-03-11 02:36:46,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 63 transitions, 262 flow [2021-03-11 02:36:46,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 63 transitions, 195 flow, removed 16 selfloop flow, removed 18 redundant places. [2021-03-11 02:36:46,896 INFO L241 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2021-03-11 02:36:46,896 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2021-03-11 02:36:46,896 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2021-03-11 02:36:46,896 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2021-03-11 02:36:46,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:36:46,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:36:46,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:36:46 BasicIcfg [2021-03-11 02:36:46,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:36:46,900 INFO L168 Benchmark]: Toolchain (without parser) took 3035.83 ms. Allocated memory was 371.2 MB in the beginning and 448.8 MB in the end (delta: 77.6 MB). Free memory was 334.7 MB in the beginning and 280.5 MB in the end (delta: 54.3 MB). Peak memory consumption was 133.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:46,901 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 371.2 MB. Free memory was 352.6 MB in the beginning and 352.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:36:46,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.47 ms. Allocated memory is still 371.2 MB. Free memory was 334.1 MB in the beginning and 334.1 MB in the end (delta: -1.7 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:46,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.36 ms. Allocated memory is still 371.2 MB. Free memory was 334.1 MB in the beginning and 331.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:46,907 INFO L168 Benchmark]: Boogie Preprocessor took 12.20 ms. Allocated memory is still 371.2 MB. Free memory was 331.9 MB in the beginning and 331.0 MB in the end (delta: 943.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:36:46,908 INFO L168 Benchmark]: RCFGBuilder took 276.27 ms. Allocated memory is still 371.2 MB. Free memory was 331.0 MB in the beginning and 306.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:46,909 INFO L168 Benchmark]: TraceAbstraction took 2374.47 ms. Allocated memory was 371.2 MB in the beginning and 448.8 MB in the end (delta: 77.6 MB). Free memory was 305.8 MB in the beginning and 280.5 MB in the end (delta: 25.3 MB). Peak memory consumption was 105.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:36:46,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 371.2 MB. Free memory was 352.6 MB in the beginning and 352.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 343.47 ms. Allocated memory is still 371.2 MB. Free memory was 334.1 MB in the beginning and 334.1 MB in the end (delta: -1.7 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.36 ms. Allocated memory is still 371.2 MB. Free memory was 334.1 MB in the beginning and 331.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.20 ms. Allocated memory is still 371.2 MB. Free memory was 331.9 MB in the beginning and 331.0 MB in the end (delta: 943.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 276.27 ms. Allocated memory is still 371.2 MB. Free memory was 331.0 MB in the beginning and 306.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2374.47 ms. Allocated memory was 371.2 MB in the beginning and 448.8 MB in the end (delta: 77.6 MB). Free memory was 305.8 MB in the beginning and 280.5 MB in the end (delta: 25.3 MB). Peak memory consumption was 105.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 22.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2314.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1307.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 215 SDslu, 260 SDs, 0 SdLazy, 360 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 202.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 843.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=493occurred in iteration=6, InterpolantAutomatonStates: 88, 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: 23.0ms SsaConstructionTime, 164.8ms SatisfiabilityAnalysisTime, 626.0ms InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 1255 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...