/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:27:55,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:27:55,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:27:55,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:27:55,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:27:55,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:27:55,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:27:55,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:27:55,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:27:55,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:27:55,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:27:55,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:27:55,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:27:55,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:27:55,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:27:55,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:27:55,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:27:55,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:27:55,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:27:55,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:27:55,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:27:55,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:27:55,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:27:55,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:27:55,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:27:55,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:27:55,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:27:55,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:27:55,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:27:55,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:27:55,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:27:55,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:27:55,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:27:55,873 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:27:55,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:27:55,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:27:55,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:27:55,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:27:55,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:27:55,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:27:55,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:27:55,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:27:55,875 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:27:55,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:27:55,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:27:55,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:27:55,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:27:55,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:27:55,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:27:55,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:27:55,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:27:55,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:27:55,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:27:55,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:27:55,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:27:55,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:27:55,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:27:55,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:27:56,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:27:56,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:27:56,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:27:56,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:27:56,195 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:27:56,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-03-11 20:27:56,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b22f501a/d20356e456274a70a2720a36cfad5e5d/FLAG84dd0878a [2021-03-11 20:27:56,785 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:27:56,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-03-11 20:27:56,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b22f501a/d20356e456274a70a2720a36cfad5e5d/FLAG84dd0878a [2021-03-11 20:27:57,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b22f501a/d20356e456274a70a2720a36cfad5e5d [2021-03-11 20:27:57,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:27:57,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:27:57,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:27:57,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:27:57,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:27:57,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287c0471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57, skipping insertion in model container [2021-03-11 20:27:57,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:27:57,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:27:57,475 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/safe026_tso.opt.i[949,962] [2021-03-11 20:27:57,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:27:57,617 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:27:57,627 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/safe026_tso.opt.i[949,962] [2021-03-11 20:27:57,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:27:57,718 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:27:57,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57 WrapperNode [2021-03-11 20:27:57,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:27:57,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:27:57,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:27:57,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:27:57,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:27:57,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:27:57,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:27:57,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:27:57,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... [2021-03-11 20:27:57,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:27:57,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:27:57,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:27:57,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:27:57,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:27:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:27:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:27:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:27:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:27:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:27:57,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:27:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:27:57,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:27:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:27:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:27:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:27:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:27:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:27:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:27:57,863 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:27:58,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:27:58,238 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:27:58,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:27:58 BoogieIcfgContainer [2021-03-11 20:27:58,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:27:58,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:27:58,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:27:58,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:27:58,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:27:57" (1/3) ... [2021-03-11 20:27:58,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761e304f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:27:58, skipping insertion in model container [2021-03-11 20:27:58,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:57" (2/3) ... [2021-03-11 20:27:58,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761e304f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:27:58, skipping insertion in model container [2021-03-11 20:27:58,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:27:58" (3/3) ... [2021-03-11 20:27:58,247 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-03-11 20:27:58,252 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:27:58,256 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:27:58,257 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:27:58,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,293 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,293 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,313 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,313 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:58,315 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:27:58,332 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:27:58,361 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:27:58,361 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:27:58,361 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:27:58,361 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:27:58,361 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:27:58,361 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:27:58,362 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:27:58,362 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:27:58,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 20:27:58,424 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 20:27:58,425 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:58,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 20:27:58,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 20:27:58,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:58,448 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:27:58,456 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:58,458 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:58,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:58,476 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 20:27:58,476 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:58,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-11 20:27:58,478 INFO L116 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-11 20:28:00,394 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:28:00,585 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:28:00,643 INFO L131 LiptonReduction]: Checked pairs total: 1527 [2021-03-11 20:28:00,643 INFO L133 LiptonReduction]: Total number of compositions: 46 [2021-03-11 20:28:00,644 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2203 [2021-03-11 20:28:00,652 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:28:00,652 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:28:00,653 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:00,653 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:00,653 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:00,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1620917175, now seen corresponding path program 1 times [2021-03-11 20:28:00,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:00,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386219054] [2021-03-11 20:28:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:00,883 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:28:00,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:28:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:00,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386219054] [2021-03-11 20:28:00,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:00,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:28:00,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855417678] [2021-03-11 20:28:00,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:28:00,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:00,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:28:00,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:28:00,923 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2021-03-11 20:28:00,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:00,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:00,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2021-03-11 20:28:00,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:00,979 INFO L129 PetriNetUnfolder]: 24/84 cut-off events. [2021-03-11 20:28:00,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:28:00,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 84 events. 24/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 321 event pairs, 6 based on Foata normal form. 21/102 useless extension candidates. Maximal degree in co-relation 141. Up to 45 conditions per place. [2021-03-11 20:28:00,988 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 5 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2021-03-11 20:28:00,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 69 flow [2021-03-11 20:28:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:28:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:28:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2021-03-11 20:28:01,001 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7927170868347339 [2021-03-11 20:28:01,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2021-03-11 20:28:01,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2021-03-11 20:28:01,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2021-03-11 20:28:01,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,015 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 283 transitions. [2021-03-11 20:28:01,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 69 flow [2021-03-11 20:28:01,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 66 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:28:01,019 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 76 flow [2021-03-11 20:28:01,020 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2021-03-11 20:28:01,021 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-03-11 20:28:01,021 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 76 flow [2021-03-11 20:28:01,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,021 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:01,022 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:01,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:28:01,022 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:01,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1300535176, now seen corresponding path program 1 times [2021-03-11 20:28:01,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:01,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729780911] [2021-03-11 20:28:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:01,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,080 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:28:01,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:28:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:01,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729780911] [2021-03-11 20:28:01,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:01,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:28:01,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13171417] [2021-03-11 20:28:01,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:01,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:01,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:01,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:01,092 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2021-03-11 20:28:01,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:01,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2021-03-11 20:28:01,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:01,128 INFO L129 PetriNetUnfolder]: 21/77 cut-off events. [2021-03-11 20:28:01,129 INFO L130 PetriNetUnfolder]: For 23/39 co-relation queries the response was YES. [2021-03-11 20:28:01,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 77 events. 21/77 cut-off events. For 23/39 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 275 event pairs, 4 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 199. Up to 40 conditions per place. [2021-03-11 20:28:01,131 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 6 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2021-03-11 20:28:01,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 112 flow [2021-03-11 20:28:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-03-11 20:28:01,135 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7794117647058824 [2021-03-11 20:28:01,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-03-11 20:28:01,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-03-11 20:28:01,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-03-11 20:28:01,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,143 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,143 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 76 flow. Second operand 4 states and 371 transitions. [2021-03-11 20:28:01,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 112 flow [2021-03-11 20:28:01,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:28:01,145 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 104 flow [2021-03-11 20:28:01,146 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2021-03-11 20:28:01,146 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-03-11 20:28:01,146 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 104 flow [2021-03-11 20:28:01,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,147 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:01,147 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:01,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:28:01,147 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:01,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1291176152, now seen corresponding path program 1 times [2021-03-11 20:28:01,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:01,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562927933] [2021-03-11 20:28:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:01,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:01,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562927933] [2021-03-11 20:28:01,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:01,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:28:01,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670828339] [2021-03-11 20:28:01,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:28:01,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:01,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:28:01,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:28:01,229 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 119 [2021-03-11 20:28:01,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:01,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 119 [2021-03-11 20:28:01,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:01,245 INFO L129 PetriNetUnfolder]: 15/61 cut-off events. [2021-03-11 20:28:01,245 INFO L130 PetriNetUnfolder]: For 67/75 co-relation queries the response was YES. [2021-03-11 20:28:01,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 61 events. 15/61 cut-off events. For 67/75 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 188 event pairs, 3 based on Foata normal form. 3/64 useless extension candidates. Maximal degree in co-relation 172. Up to 32 conditions per place. [2021-03-11 20:28:01,247 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 9 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-11 20:28:01,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 158 flow [2021-03-11 20:28:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:28:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:28:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2021-03-11 20:28:01,248 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8403361344537815 [2021-03-11 20:28:01,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2021-03-11 20:28:01,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2021-03-11 20:28:01,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2021-03-11 20:28:01,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,251 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 104 flow. Second operand 3 states and 300 transitions. [2021-03-11 20:28:01,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 158 flow [2021-03-11 20:28:01,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:28:01,255 INFO L241 Difference]: Finished difference. Result has 33 places, 25 transitions, 142 flow [2021-03-11 20:28:01,255 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2021-03-11 20:28:01,256 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2021-03-11 20:28:01,258 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 142 flow [2021-03-11 20:28:01,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,258 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:01,258 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:01,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:28:01,260 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:01,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1372350777, now seen corresponding path program 1 times [2021-03-11 20:28:01,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:01,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829675509] [2021-03-11 20:28:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:01,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:01,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829675509] [2021-03-11 20:28:01,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:01,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:28:01,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032600708] [2021-03-11 20:28:01,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:01,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:01,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:01,342 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-11 20:28:01,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:01,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-11 20:28:01,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:01,413 INFO L129 PetriNetUnfolder]: 90/212 cut-off events. [2021-03-11 20:28:01,413 INFO L130 PetriNetUnfolder]: For 290/364 co-relation queries the response was YES. [2021-03-11 20:28:01,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 212 events. 90/212 cut-off events. For 290/364 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1135 event pairs, 32 based on Foata normal form. 31/228 useless extension candidates. Maximal degree in co-relation 537. Up to 128 conditions per place. [2021-03-11 20:28:01,420 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 8 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2021-03-11 20:28:01,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 194 flow [2021-03-11 20:28:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:28:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:28:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2021-03-11 20:28:01,422 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7361344537815127 [2021-03-11 20:28:01,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2021-03-11 20:28:01,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2021-03-11 20:28:01,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2021-03-11 20:28:01,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,425 INFO L185 Difference]: Start difference. First operand has 33 places, 25 transitions, 142 flow. Second operand 5 states and 438 transitions. [2021-03-11 20:28:01,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 194 flow [2021-03-11 20:28:01,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 187 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:28:01,429 INFO L241 Difference]: Finished difference. Result has 39 places, 32 transitions, 195 flow [2021-03-11 20:28:01,429 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2021-03-11 20:28:01,429 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-03-11 20:28:01,429 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 195 flow [2021-03-11 20:28:01,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,430 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:01,430 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:01,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:28:01,430 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:01,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:01,431 INFO L82 PathProgramCache]: Analyzing trace with hash 406793198, now seen corresponding path program 1 times [2021-03-11 20:28:01,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:01,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970736330] [2021-03-11 20:28:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:01,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:01,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970736330] [2021-03-11 20:28:01,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:01,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:28:01,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108380330] [2021-03-11 20:28:01,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:28:01,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:01,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:28:01,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:28:01,498 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-11 20:28:01,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:01,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-11 20:28:01,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:01,567 INFO L129 PetriNetUnfolder]: 62/179 cut-off events. [2021-03-11 20:28:01,567 INFO L130 PetriNetUnfolder]: For 530/794 co-relation queries the response was YES. [2021-03-11 20:28:01,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 179 events. 62/179 cut-off events. For 530/794 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1014 event pairs, 4 based on Foata normal form. 99/267 useless extension candidates. Maximal degree in co-relation 681. Up to 126 conditions per place. [2021-03-11 20:28:01,569 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 15 changer transitions 3/42 dead transitions. [2021-03-11 20:28:01,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 299 flow [2021-03-11 20:28:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:28:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:28:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2021-03-11 20:28:01,571 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7358943577430972 [2021-03-11 20:28:01,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2021-03-11 20:28:01,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2021-03-11 20:28:01,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2021-03-11 20:28:01,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,576 INFO L185 Difference]: Start difference. First operand has 39 places, 32 transitions, 195 flow. Second operand 7 states and 613 transitions. [2021-03-11 20:28:01,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 299 flow [2021-03-11 20:28:01,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:28:01,579 INFO L241 Difference]: Finished difference. Result has 47 places, 39 transitions, 290 flow [2021-03-11 20:28:01,579 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2021-03-11 20:28:01,579 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2021-03-11 20:28:01,579 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 290 flow [2021-03-11 20:28:01,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:01,580 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:01,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:28:01,580 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:01,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2095814588, now seen corresponding path program 1 times [2021-03-11 20:28:01,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:01,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721986624] [2021-03-11 20:28:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:01,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:01,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721986624] [2021-03-11 20:28:01,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:01,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:28:01,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152040445] [2021-03-11 20:28:01,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:28:01,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:01,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:28:01,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:28:01,621 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-11 20:28:01,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:01,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-11 20:28:01,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:01,692 INFO L129 PetriNetUnfolder]: 47/154 cut-off events. [2021-03-11 20:28:01,693 INFO L130 PetriNetUnfolder]: For 965/1524 co-relation queries the response was YES. [2021-03-11 20:28:01,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 154 events. 47/154 cut-off events. For 965/1524 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 873 event pairs, 0 based on Foata normal form. 116/257 useless extension candidates. Maximal degree in co-relation 748. Up to 110 conditions per place. [2021-03-11 20:28:01,695 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 2 selfloop transitions, 19 changer transitions 3/43 dead transitions. [2021-03-11 20:28:01,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 368 flow [2021-03-11 20:28:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:28:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:28:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 782 transitions. [2021-03-11 20:28:01,697 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2021-03-11 20:28:01,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 782 transitions. [2021-03-11 20:28:01,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 782 transitions. [2021-03-11 20:28:01,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 782 transitions. [2021-03-11 20:28:01,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.88888888888889) internal successors, (782), 9 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,702 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,703 INFO L185 Difference]: Start difference. First operand has 47 places, 39 transitions, 290 flow. Second operand 9 states and 782 transitions. [2021-03-11 20:28:01,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 368 flow [2021-03-11 20:28:01,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 333 flow, removed 13 selfloop flow, removed 2 redundant places. [2021-03-11 20:28:01,709 INFO L241 Difference]: Finished difference. Result has 56 places, 40 transitions, 316 flow [2021-03-11 20:28:01,709 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2021-03-11 20:28:01,709 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2021-03-11 20:28:01,709 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 316 flow [2021-03-11 20:28:01,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,710 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:01,710 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:01,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:28:01,710 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:01,711 INFO L82 PathProgramCache]: Analyzing trace with hash 86778752, now seen corresponding path program 1 times [2021-03-11 20:28:01,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:01,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089069524] [2021-03-11 20:28:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:01,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:28:01,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:01,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089069524] [2021-03-11 20:28:01,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:01,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:28:01,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891370504] [2021-03-11 20:28:01,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:01,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:01,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:01,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:01,768 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 119 [2021-03-11 20:28:01,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:01,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 119 [2021-03-11 20:28:01,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:01,810 INFO L129 PetriNetUnfolder]: 66/221 cut-off events. [2021-03-11 20:28:01,810 INFO L130 PetriNetUnfolder]: For 982/1045 co-relation queries the response was YES. [2021-03-11 20:28:01,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 221 events. 66/221 cut-off events. For 982/1045 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 1467 event pairs, 0 based on Foata normal form. 12/219 useless extension candidates. Maximal degree in co-relation 920. Up to 80 conditions per place. [2021-03-11 20:28:01,812 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 3 selfloop transitions, 1 changer transitions 19/41 dead transitions. [2021-03-11 20:28:01,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 332 flow [2021-03-11 20:28:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2021-03-11 20:28:01,814 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8109243697478992 [2021-03-11 20:28:01,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2021-03-11 20:28:01,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2021-03-11 20:28:01,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2021-03-11 20:28:01,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,818 INFO L185 Difference]: Start difference. First operand has 56 places, 40 transitions, 316 flow. Second operand 4 states and 386 transitions. [2021-03-11 20:28:01,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 332 flow [2021-03-11 20:28:01,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 272 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-03-11 20:28:01,825 INFO L241 Difference]: Finished difference. Result has 52 places, 22 transitions, 137 flow [2021-03-11 20:28:01,825 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=22} [2021-03-11 20:28:01,825 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2021-03-11 20:28:01,825 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 22 transitions, 137 flow [2021-03-11 20:28:01,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,826 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:28:01,826 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:28:01,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:28:01,826 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:28:01,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:28:01,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1356473356, now seen corresponding path program 2 times [2021-03-11 20:28:01,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:28:01,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694406338] [2021-03-11 20:28:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:28:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:28:01,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:28:01,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:28:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:28:01,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694406338] [2021-03-11 20:28:01,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:28:01,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:28:01,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224450875] [2021-03-11 20:28:01,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:28:01,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:28:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:28:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:28:01,885 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-03-11 20:28:01,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 22 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:28:01,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-03-11 20:28:01,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:28:01,899 INFO L129 PetriNetUnfolder]: 6/31 cut-off events. [2021-03-11 20:28:01,900 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2021-03-11 20:28:01,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 31 events. 6/31 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 50 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 100. Up to 10 conditions per place. [2021-03-11 20:28:01,900 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-03-11 20:28:01,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 21 transitions, 127 flow [2021-03-11 20:28:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:28:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:28:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-03-11 20:28:01,902 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.792016806722689 [2021-03-11 20:28:01,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-03-11 20:28:01,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-03-11 20:28:01,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:28:01,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-03-11 20:28:01,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,905 INFO L185 Difference]: Start difference. First operand has 52 places, 22 transitions, 137 flow. Second operand 4 states and 377 transitions. [2021-03-11 20:28:01,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 21 transitions, 127 flow [2021-03-11 20:28:01,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 21 transitions, 104 flow, removed 0 selfloop flow, removed 9 redundant places. [2021-03-11 20:28:01,906 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-11 20:28:01,906 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-11 20:28:01,906 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-03-11 20:28:01,906 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-03-11 20:28:01,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:28:01,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:28:01,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:28:01 BasicIcfg [2021-03-11 20:28:01,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:28:01,911 INFO L168 Benchmark]: Toolchain (without parser) took 4652.60 ms. Allocated memory is still 343.9 MB. Free memory was 307.0 MB in the beginning and 140.7 MB in the end (delta: 166.2 MB). Peak memory consumption was 168.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:01,912 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 343.9 MB. Free memory was 325.4 MB in the beginning and 325.4 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:28:01,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.10 ms. Allocated memory is still 343.9 MB. Free memory was 306.3 MB in the beginning and 306.1 MB in the end (delta: 213.8 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:01,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.61 ms. Allocated memory is still 343.9 MB. Free memory was 306.1 MB in the beginning and 304.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:01,915 INFO L168 Benchmark]: Boogie Preprocessor took 27.41 ms. Allocated memory is still 343.9 MB. Free memory was 304.0 MB in the beginning and 301.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:01,917 INFO L168 Benchmark]: RCFGBuilder took 434.02 ms. Allocated memory is still 343.9 MB. Free memory was 301.9 MB in the beginning and 279.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:01,917 INFO L168 Benchmark]: TraceAbstraction took 3667.57 ms. Allocated memory is still 343.9 MB. Free memory was 278.9 MB in the beginning and 140.7 MB in the end (delta: 138.1 MB). Peak memory consumption was 140.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:28:01,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 343.9 MB. Free memory was 325.4 MB in the beginning and 325.4 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 456.10 ms. Allocated memory is still 343.9 MB. Free memory was 306.3 MB in the beginning and 306.1 MB in the end (delta: 213.8 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.61 ms. Allocated memory is still 343.9 MB. Free memory was 306.1 MB in the beginning and 304.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.41 ms. Allocated memory is still 343.9 MB. Free memory was 304.0 MB in the beginning and 301.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 434.02 ms. Allocated memory is still 343.9 MB. Free memory was 301.9 MB in the beginning and 279.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3667.57 ms. Allocated memory is still 343.9 MB. Free memory was 278.9 MB in the beginning and 140.7 MB in the end (delta: 138.1 MB). Peak memory consumption was 140.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2185.5ms, 67 PlacesBefore, 26 PlacesAfterwards, 58 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1527 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 929, positive: 858, positive conditional: 0, positive unconditional: 858, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 607, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 607, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 172, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 134, negative conditional: 0, negative unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 929, positive: 286, positive conditional: 0, positive unconditional: 286, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 607, unknown conditional: 0, unknown unconditional: 607] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3550.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 527.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2287.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 16 SDslu, 15 SDs, 0 SdLazy, 107 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 95.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=6, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.3ms SsaConstructionTime, 155.3ms SatisfiabilityAnalysisTime, 394.2ms InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 358 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...