/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix047_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 10:53:04,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 10:53:04,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 10:53:04,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 10:53:04,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 10:53:04,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 10:53:04,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 10:53:04,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 10:53:04,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 10:53:04,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 10:53:04,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 10:53:04,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 10:53:04,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 10:53:04,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 10:53:04,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 10:53:04,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 10:53:04,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 10:53:04,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 10:53:04,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 10:53:04,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 10:53:04,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 10:53:04,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 10:53:04,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 10:53:04,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 10:53:04,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 10:53:04,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 10:53:04,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 10:53:04,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 10:53:04,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 10:53:04,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 10:53:04,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 10:53:04,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 10:53:04,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 10:53:04,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 10:53:04,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 10:53:04,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 10:53:04,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 10:53:04,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 10:53:04,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 10:53:04,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 10:53:04,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 10:53:04,966 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-VariableLbe.epf [2021-03-24 10:53:04,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 10:53:04,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 10:53:04,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 10:53:04,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 10:53:04,997 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 10:53:04,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 10:53:04,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 10:53:04,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 10:53:04,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 10:53:04,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 10:53:04,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 10:53:04,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 10:53:04,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 10:53:04,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 10:53:04,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 10:53:04,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 10:53:04,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 10:53:05,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 10:53:05,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 10:53:05,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 10:53:05,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 10:53:05,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:53:05,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 10:53:05,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 10:53:05,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 10:53:05,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 10:53:05,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 10:53:05,001 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 10:53:05,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 10:53:05,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 10:53:05,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 10:53:05,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 10:53:05,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 10:53:05,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 10:53:05,306 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 10:53:05,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix047_pso.opt.i [2021-03-24 10:53:05,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c8a94b/8cfbd4eae8d84ddb816baf7ac65516e6/FLAGdcecfc10b [2021-03-24 10:53:05,865 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 10:53:05,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix047_pso.opt.i [2021-03-24 10:53:05,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c8a94b/8cfbd4eae8d84ddb816baf7ac65516e6/FLAGdcecfc10b [2021-03-24 10:53:06,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598c8a94b/8cfbd4eae8d84ddb816baf7ac65516e6 [2021-03-24 10:53:06,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 10:53:06,383 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 10:53:06,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 10:53:06,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 10:53:06,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 10:53:06,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23eb55b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06, skipping insertion in model container [2021-03-24 10:53:06,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 10:53:06,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 10:53:06,533 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/mix047_pso.opt.i[948,961] [2021-03-24 10:53:06,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:53:06,699 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 10:53:06,709 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/mix047_pso.opt.i[948,961] [2021-03-24 10:53:06,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:53:06,836 INFO L208 MainTranslator]: Completed translation [2021-03-24 10:53:06,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06 WrapperNode [2021-03-24 10:53:06,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 10:53:06,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 10:53:06,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 10:53:06,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 10:53:06,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 10:53:06,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 10:53:06,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 10:53:06,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 10:53:06,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... [2021-03-24 10:53:06,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 10:53:06,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 10:53:06,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 10:53:06,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 10:53:06,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:53:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 10:53:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 10:53:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 10:53:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 10:53:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 10:53:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 10:53:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 10:53:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 10:53:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 10:53:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 10:53:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-24 10:53:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-24 10:53:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 10:53:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 10:53:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 10:53:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 10:53:07,033 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 10:53:08,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 10:53:08,417 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 10:53:08,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:53:08 BoogieIcfgContainer [2021-03-24 10:53:08,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 10:53:08,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 10:53:08,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 10:53:08,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 10:53:08,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:53:06" (1/3) ... [2021-03-24 10:53:08,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d6e740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:53:08, skipping insertion in model container [2021-03-24 10:53:08,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:53:06" (2/3) ... [2021-03-24 10:53:08,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d6e740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:53:08, skipping insertion in model container [2021-03-24 10:53:08,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:53:08" (3/3) ... [2021-03-24 10:53:08,427 INFO L111 eAbstractionObserver]: Analyzing ICFG mix047_pso.opt.i [2021-03-24 10:53:08,434 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 10:53:08,438 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 10:53:08,439 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 10:53:08,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,478 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,478 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,487 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,488 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,488 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,488 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,488 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,488 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,489 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,489 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,489 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,489 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,489 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,489 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,489 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,490 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,490 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,490 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,490 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,490 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,491 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,491 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,491 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,491 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,491 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,491 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,492 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,492 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,492 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,493 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,493 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,493 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,493 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,493 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,494 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,494 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,494 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,497 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,497 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,497 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,499 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,500 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,511 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,511 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,511 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,511 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,511 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,512 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,512 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,512 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,512 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,512 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,512 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,512 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:53:08,513 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:53:08,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-24 10:53:08,558 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:53:08,558 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:53:08,559 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:53:08,559 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:53:08,559 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:53:08,559 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:53:08,559 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:53:08,559 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:53:08,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 116 transitions, 252 flow [2021-03-24 10:53:08,623 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2021-03-24 10:53:08,624 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:53:08,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-03-24 10:53:08,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 116 transitions, 252 flow [2021-03-24 10:53:08,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 112 transitions, 236 flow [2021-03-24 10:53:08,644 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:53:08,653 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 112 transitions, 236 flow [2021-03-24 10:53:08,656 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 112 transitions, 236 flow [2021-03-24 10:53:08,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 236 flow [2021-03-24 10:53:08,696 INFO L129 PetriNetUnfolder]: 2/112 cut-off events. [2021-03-24 10:53:08,696 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:53:08,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-03-24 10:53:08,701 INFO L142 LiptonReduction]: Number of co-enabled transitions 2598 [2021-03-24 10:53:10,233 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 190 [2021-03-24 10:53:10,846 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 187 [2021-03-24 10:53:12,072 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 314 DAG size of output: 269 [2021-03-24 10:53:12,585 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-24 10:53:12,850 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 10:53:13,309 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 10:53:13,446 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-24 10:53:14,338 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-03-24 10:53:14,644 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-03-24 10:53:15,230 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2021-03-24 10:53:15,810 WARN L205 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2021-03-24 10:53:16,399 INFO L154 LiptonReduction]: Checked pairs total: 4306 [2021-03-24 10:53:16,399 INFO L156 LiptonReduction]: Total number of compositions: 75 [2021-03-24 10:53:16,401 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7757 [2021-03-24 10:53:16,412 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-24 10:53:16,412 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:53:16,413 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:16,413 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:16,414 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:16,418 INFO L82 PathProgramCache]: Analyzing trace with hash 316096465, now seen corresponding path program 1 times [2021-03-24 10:53:16,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:16,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853015210] [2021-03-24 10:53:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:16,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:16,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:16,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:16,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:16,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853015210] [2021-03-24 10:53:16,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:16,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:53:16,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875049418] [2021-03-24 10:53:16,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:53:16,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:53:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:53:16,668 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 191 [2021-03-24 10:53:16,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 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) [2021-03-24 10:53:16,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:16,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 191 [2021-03-24 10:53:16,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:16,730 INFO L129 PetriNetUnfolder]: 23/109 cut-off events. [2021-03-24 10:53:16,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:53:16,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 109 events. 23/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 410 event pairs, 3 based on Foata normal form. 6/108 useless extension candidates. Maximal degree in co-relation 150. Up to 37 conditions per place. [2021-03-24 10:53:16,732 INFO L132 encePairwiseOnDemand]: 187/191 looper letters, 7 selfloop transitions, 2 changer transitions 6/46 dead transitions. [2021-03-24 10:53:16,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 126 flow [2021-03-24 10:53:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:53:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:53:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2021-03-24 10:53:16,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9092495636998255 [2021-03-24 10:53:16,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2021-03-24 10:53:16,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2021-03-24 10:53:16,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:16,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2021-03-24 10:53:16,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:16,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:16,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:16,760 INFO L185 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 521 transitions. [2021-03-24 10:53:16,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 126 flow [2021-03-24 10:53:16,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 122 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 10:53:16,764 INFO L241 Difference]: Finished difference. Result has 53 places, 37 transitions, 86 flow [2021-03-24 10:53:16,766 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2021-03-24 10:53:16,766 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2021-03-24 10:53:16,766 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 86 flow [2021-03-24 10:53:16,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 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) [2021-03-24 10:53:16,767 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:16,767 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:16,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 10:53:16,767 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:16,768 INFO L82 PathProgramCache]: Analyzing trace with hash -2031321782, now seen corresponding path program 1 times [2021-03-24 10:53:16,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:16,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087014930] [2021-03-24 10:53:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:16,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:16,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:16,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:16,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:16,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087014930] [2021-03-24 10:53:16,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:16,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:53:16,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953762691] [2021-03-24 10:53:16,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:53:16,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:16,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:53:16,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:53:16,974 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 191 [2021-03-24 10:53:16,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:16,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:16,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 191 [2021-03-24 10:53:16,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:17,010 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-24 10:53:17,010 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:53:17,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 42 events. 0/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 2/43 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 10:53:17,011 INFO L132 encePairwiseOnDemand]: 187/191 looper letters, 2 selfloop transitions, 2 changer transitions 3/39 dead transitions. [2021-03-24 10:53:17,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 102 flow [2021-03-24 10:53:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:53:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:53:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 853 transitions. [2021-03-24 10:53:17,013 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8931937172774869 [2021-03-24 10:53:17,013 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 853 transitions. [2021-03-24 10:53:17,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 853 transitions. [2021-03-24 10:53:17,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:17,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 853 transitions. [2021-03-24 10:53:17,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,019 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,019 INFO L185 Difference]: Start difference. First operand has 53 places, 37 transitions, 86 flow. Second operand 5 states and 853 transitions. [2021-03-24 10:53:17,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 102 flow [2021-03-24 10:53:17,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 10:53:17,021 INFO L241 Difference]: Finished difference. Result has 53 places, 36 transitions, 92 flow [2021-03-24 10:53:17,021 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2021-03-24 10:53:17,021 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2021-03-24 10:53:17,021 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 92 flow [2021-03-24 10:53:17,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,022 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:17,022 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:17,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 10:53:17,022 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:17,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:17,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2109704181, now seen corresponding path program 1 times [2021-03-24 10:53:17,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:17,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13414622] [2021-03-24 10:53:17,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:17,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:17,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13414622] [2021-03-24 10:53:17,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:17,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:53:17,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987891361] [2021-03-24 10:53:17,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:53:17,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:17,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:53:17,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:53:17,189 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 191 [2021-03-24 10:53:17,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:17,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 191 [2021-03-24 10:53:17,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:17,217 INFO L129 PetriNetUnfolder]: 6/60 cut-off events. [2021-03-24 10:53:17,217 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-03-24 10:53:17,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 60 events. 6/60 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 2 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 86. Up to 15 conditions per place. [2021-03-24 10:53:17,218 INFO L132 encePairwiseOnDemand]: 186/191 looper letters, 4 selfloop transitions, 3 changer transitions 5/43 dead transitions. [2021-03-24 10:53:17,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 132 flow [2021-03-24 10:53:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:53:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:53:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 854 transitions. [2021-03-24 10:53:17,221 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8942408376963351 [2021-03-24 10:53:17,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 854 transitions. [2021-03-24 10:53:17,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 854 transitions. [2021-03-24 10:53:17,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:17,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 854 transitions. [2021-03-24 10:53:17,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.8) internal successors, (854), 5 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,226 INFO L185 Difference]: Start difference. First operand has 53 places, 36 transitions, 92 flow. Second operand 5 states and 854 transitions. [2021-03-24 10:53:17,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 132 flow [2021-03-24 10:53:17,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 124 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 10:53:17,228 INFO L241 Difference]: Finished difference. Result has 53 places, 38 transitions, 111 flow [2021-03-24 10:53:17,228 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2021-03-24 10:53:17,228 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2021-03-24 10:53:17,228 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 111 flow [2021-03-24 10:53:17,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,228 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:17,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:17,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 10:53:17,229 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash 976326615, now seen corresponding path program 1 times [2021-03-24 10:53:17,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:17,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232868017] [2021-03-24 10:53:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:17,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:17,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:17,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:17,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:53:17,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:17,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:17,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:17,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232868017] [2021-03-24 10:53:17,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:17,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 10:53:17,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571986097] [2021-03-24 10:53:17,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 10:53:17,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 10:53:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 10:53:17,375 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 191 [2021-03-24 10:53:17,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 111 flow. Second operand has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:17,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 191 [2021-03-24 10:53:17,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:17,473 INFO L129 PetriNetUnfolder]: 68/194 cut-off events. [2021-03-24 10:53:17,473 INFO L130 PetriNetUnfolder]: For 153/153 co-relation queries the response was YES. [2021-03-24 10:53:17,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 194 events. 68/194 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 810 event pairs, 35 based on Foata normal form. 13/195 useless extension candidates. Maximal degree in co-relation 418. Up to 85 conditions per place. [2021-03-24 10:53:17,476 INFO L132 encePairwiseOnDemand]: 182/191 looper letters, 9 selfloop transitions, 8 changer transitions 6/50 dead transitions. [2021-03-24 10:53:17,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 185 flow [2021-03-24 10:53:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 10:53:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 10:53:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1289 transitions. [2021-03-24 10:53:17,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8435863874345549 [2021-03-24 10:53:17,480 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1289 transitions. [2021-03-24 10:53:17,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1289 transitions. [2021-03-24 10:53:17,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:17,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1289 transitions. [2021-03-24 10:53:17,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 161.125) internal successors, (1289), 8 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,487 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,487 INFO L185 Difference]: Start difference. First operand has 53 places, 38 transitions, 111 flow. Second operand 8 states and 1289 transitions. [2021-03-24 10:53:17,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 185 flow [2021-03-24 10:53:17,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 10:53:17,489 INFO L241 Difference]: Finished difference. Result has 60 places, 42 transitions, 152 flow [2021-03-24 10:53:17,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2021-03-24 10:53:17,490 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2021-03-24 10:53:17,490 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 152 flow [2021-03-24 10:53:17,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:17,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:17,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 10:53:17,491 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:17,491 INFO L82 PathProgramCache]: Analyzing trace with hash -124962240, now seen corresponding path program 1 times [2021-03-24 10:53:17,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:17,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729296432] [2021-03-24 10:53:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:17,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:17,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:17,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:17,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:17,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:17,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:17,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729296432] [2021-03-24 10:53:17,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:17,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 10:53:17,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926375333] [2021-03-24 10:53:17,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 10:53:17,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:17,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 10:53:17,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 10:53:17,596 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 191 [2021-03-24 10:53:17,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 159.28571428571428) internal successors, (1115), 7 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:17,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 191 [2021-03-24 10:53:17,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:17,720 INFO L129 PetriNetUnfolder]: 70/195 cut-off events. [2021-03-24 10:53:17,720 INFO L130 PetriNetUnfolder]: For 257/259 co-relation queries the response was YES. [2021-03-24 10:53:17,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 195 events. 70/195 cut-off events. For 257/259 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 802 event pairs, 19 based on Foata normal form. 9/192 useless extension candidates. Maximal degree in co-relation 519. Up to 86 conditions per place. [2021-03-24 10:53:17,724 INFO L132 encePairwiseOnDemand]: 182/191 looper letters, 12 selfloop transitions, 11 changer transitions 3/53 dead transitions. [2021-03-24 10:53:17,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 242 flow [2021-03-24 10:53:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:53:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:53:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1130 transitions. [2021-03-24 10:53:17,727 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8451757666417352 [2021-03-24 10:53:17,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1130 transitions. [2021-03-24 10:53:17,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1130 transitions. [2021-03-24 10:53:17,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:17,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1130 transitions. [2021-03-24 10:53:17,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,733 INFO L185 Difference]: Start difference. First operand has 60 places, 42 transitions, 152 flow. Second operand 7 states and 1130 transitions. [2021-03-24 10:53:17,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 242 flow [2021-03-24 10:53:17,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 236 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 10:53:17,737 INFO L241 Difference]: Finished difference. Result has 64 places, 48 transitions, 208 flow [2021-03-24 10:53:17,737 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2021-03-24 10:53:17,738 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2021-03-24 10:53:17,738 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 208 flow [2021-03-24 10:53:17,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 159.28571428571428) internal successors, (1115), 7 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,738 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:17,738 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:17,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 10:53:17,739 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1496567638, now seen corresponding path program 2 times [2021-03-24 10:53:17,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:17,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11102141] [2021-03-24 10:53:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:17,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:17,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:17,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:17,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:17,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:17,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:17,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11102141] [2021-03-24 10:53:17,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:17,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 10:53:17,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928211321] [2021-03-24 10:53:17,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 10:53:17,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:17,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 10:53:17,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 10:53:17,855 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 191 [2021-03-24 10:53:17,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:17,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:17,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 191 [2021-03-24 10:53:17,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:18,008 INFO L129 PetriNetUnfolder]: 82/218 cut-off events. [2021-03-24 10:53:18,008 INFO L130 PetriNetUnfolder]: For 479/487 co-relation queries the response was YES. [2021-03-24 10:53:18,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 218 events. 82/218 cut-off events. For 479/487 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 933 event pairs, 22 based on Foata normal form. 15/216 useless extension candidates. Maximal degree in co-relation 740. Up to 101 conditions per place. [2021-03-24 10:53:18,011 INFO L132 encePairwiseOnDemand]: 183/191 looper letters, 12 selfloop transitions, 15 changer transitions 5/60 dead transitions. [2021-03-24 10:53:18,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 362 flow [2021-03-24 10:53:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:53:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:53:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1167 transitions. [2021-03-24 10:53:18,014 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8728496634255797 [2021-03-24 10:53:18,014 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1167 transitions. [2021-03-24 10:53:18,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1167 transitions. [2021-03-24 10:53:18,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:18,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1167 transitions. [2021-03-24 10:53:18,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.71428571428572) internal successors, (1167), 7 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,021 INFO L185 Difference]: Start difference. First operand has 64 places, 48 transitions, 208 flow. Second operand 7 states and 1167 transitions. [2021-03-24 10:53:18,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 362 flow [2021-03-24 10:53:18,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 344 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 10:53:18,025 INFO L241 Difference]: Finished difference. Result has 70 places, 54 transitions, 295 flow [2021-03-24 10:53:18,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2021-03-24 10:53:18,026 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2021-03-24 10:53:18,026 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 295 flow [2021-03-24 10:53:18,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,026 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:18,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:18,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 10:53:18,027 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:18,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:18,027 INFO L82 PathProgramCache]: Analyzing trace with hash 453580096, now seen corresponding path program 3 times [2021-03-24 10:53:18,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:18,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778807366] [2021-03-24 10:53:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:18,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:18,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:18,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:18,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:53:18,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:18,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:18,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:18,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778807366] [2021-03-24 10:53:18,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:18,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 10:53:18,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515140527] [2021-03-24 10:53:18,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 10:53:18,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:18,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 10:53:18,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-24 10:53:18,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 191 [2021-03-24 10:53:18,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 295 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:18,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 191 [2021-03-24 10:53:18,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:18,308 INFO L129 PetriNetUnfolder]: 72/206 cut-off events. [2021-03-24 10:53:18,308 INFO L130 PetriNetUnfolder]: For 843/857 co-relation queries the response was YES. [2021-03-24 10:53:18,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 206 events. 72/206 cut-off events. For 843/857 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 886 event pairs, 16 based on Foata normal form. 24/213 useless extension candidates. Maximal degree in co-relation 827. Up to 80 conditions per place. [2021-03-24 10:53:18,311 INFO L132 encePairwiseOnDemand]: 182/191 looper letters, 12 selfloop transitions, 20 changer transitions 6/65 dead transitions. [2021-03-24 10:53:18,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 470 flow [2021-03-24 10:53:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:53:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:53:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1449 transitions. [2021-03-24 10:53:18,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8429319371727748 [2021-03-24 10:53:18,315 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1449 transitions. [2021-03-24 10:53:18,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1449 transitions. [2021-03-24 10:53:18,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:18,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1449 transitions. [2021-03-24 10:53:18,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,322 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,322 INFO L185 Difference]: Start difference. First operand has 70 places, 54 transitions, 295 flow. Second operand 9 states and 1449 transitions. [2021-03-24 10:53:18,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 470 flow [2021-03-24 10:53:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 443 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-03-24 10:53:18,329 INFO L241 Difference]: Finished difference. Result has 76 places, 57 transitions, 358 flow [2021-03-24 10:53:18,329 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=358, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2021-03-24 10:53:18,330 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2021-03-24 10:53:18,330 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 358 flow [2021-03-24 10:53:18,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,330 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:18,330 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:18,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 10:53:18,331 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:18,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1895763638, now seen corresponding path program 1 times [2021-03-24 10:53:18,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:18,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156260987] [2021-03-24 10:53:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:18,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:18,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156260987] [2021-03-24 10:53:18,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:18,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:53:18,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092181947] [2021-03-24 10:53:18,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:53:18,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:18,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:53:18,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:53:18,420 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 191 [2021-03-24 10:53:18,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:18,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 191 [2021-03-24 10:53:18,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:18,495 INFO L129 PetriNetUnfolder]: 129/344 cut-off events. [2021-03-24 10:53:18,495 INFO L130 PetriNetUnfolder]: For 1762/1811 co-relation queries the response was YES. [2021-03-24 10:53:18,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 344 events. 129/344 cut-off events. For 1762/1811 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1914 event pairs, 31 based on Foata normal form. 15/334 useless extension candidates. Maximal degree in co-relation 1412. Up to 97 conditions per place. [2021-03-24 10:53:18,500 INFO L132 encePairwiseOnDemand]: 186/191 looper letters, 4 selfloop transitions, 3 changer transitions 5/64 dead transitions. [2021-03-24 10:53:18,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 410 flow [2021-03-24 10:53:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:53:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:53:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 854 transitions. [2021-03-24 10:53:18,502 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8942408376963351 [2021-03-24 10:53:18,503 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 854 transitions. [2021-03-24 10:53:18,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 854 transitions. [2021-03-24 10:53:18,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:18,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 854 transitions. [2021-03-24 10:53:18,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.8) internal successors, (854), 5 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,508 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,508 INFO L185 Difference]: Start difference. First operand has 76 places, 57 transitions, 358 flow. Second operand 5 states and 854 transitions. [2021-03-24 10:53:18,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 410 flow [2021-03-24 10:53:18,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 386 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 10:53:18,513 INFO L241 Difference]: Finished difference. Result has 76 places, 59 transitions, 363 flow [2021-03-24 10:53:18,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2021-03-24 10:53:18,514 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2021-03-24 10:53:18,514 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 363 flow [2021-03-24 10:53:18,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:18,515 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:18,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 10:53:18,515 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash 167751728, now seen corresponding path program 1 times [2021-03-24 10:53:18,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:18,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859115890] [2021-03-24 10:53:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:18,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:18,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:18,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859115890] [2021-03-24 10:53:18,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:18,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:53:18,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532980360] [2021-03-24 10:53:18,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:53:18,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:18,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:53:18,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:53:18,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 191 [2021-03-24 10:53:18,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 363 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:18,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 191 [2021-03-24 10:53:18,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:18,653 INFO L129 PetriNetUnfolder]: 121/365 cut-off events. [2021-03-24 10:53:18,654 INFO L130 PetriNetUnfolder]: For 1832/1994 co-relation queries the response was YES. [2021-03-24 10:53:18,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 365 events. 121/365 cut-off events. For 1832/1994 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2213 event pairs, 28 based on Foata normal form. 23/360 useless extension candidates. Maximal degree in co-relation 1523. Up to 101 conditions per place. [2021-03-24 10:53:18,659 INFO L132 encePairwiseOnDemand]: 187/191 looper letters, 5 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2021-03-24 10:53:18,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 62 transitions, 415 flow [2021-03-24 10:53:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:53:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:53:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 851 transitions. [2021-03-24 10:53:18,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8910994764397906 [2021-03-24 10:53:18,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 851 transitions. [2021-03-24 10:53:18,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 851 transitions. [2021-03-24 10:53:18,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:18,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 851 transitions. [2021-03-24 10:53:18,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,666 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,667 INFO L185 Difference]: Start difference. First operand has 76 places, 59 transitions, 363 flow. Second operand 5 states and 851 transitions. [2021-03-24 10:53:18,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 62 transitions, 415 flow [2021-03-24 10:53:18,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 62 transitions, 404 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 10:53:18,673 INFO L241 Difference]: Finished difference. Result has 79 places, 59 transitions, 371 flow [2021-03-24 10:53:18,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=79, PETRI_TRANSITIONS=59} [2021-03-24 10:53:18,673 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2021-03-24 10:53:18,673 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 59 transitions, 371 flow [2021-03-24 10:53:18,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,674 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:18,674 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:18,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 10:53:18,674 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:18,674 INFO L82 PathProgramCache]: Analyzing trace with hash 59150289, now seen corresponding path program 1 times [2021-03-24 10:53:18,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:18,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307983381] [2021-03-24 10:53:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:18,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:18,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:18,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:18,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:53:18,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:18,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:18,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:18,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:18,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307983381] [2021-03-24 10:53:18,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:18,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 10:53:18,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993077306] [2021-03-24 10:53:18,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 10:53:18,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:18,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 10:53:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-24 10:53:18,808 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 191 [2021-03-24 10:53:18,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 59 transitions, 371 flow. Second operand has 9 states, 9 states have (on average 158.22222222222223) internal successors, (1424), 9 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:18,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:18,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 191 [2021-03-24 10:53:18,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:18,987 INFO L129 PetriNetUnfolder]: 151/399 cut-off events. [2021-03-24 10:53:18,987 INFO L130 PetriNetUnfolder]: For 2382/2519 co-relation queries the response was YES. [2021-03-24 10:53:18,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 399 events. 151/399 cut-off events. For 2382/2519 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2267 event pairs, 18 based on Foata normal form. 47/421 useless extension candidates. Maximal degree in co-relation 1958. Up to 173 conditions per place. [2021-03-24 10:53:18,993 INFO L132 encePairwiseOnDemand]: 181/191 looper letters, 18 selfloop transitions, 20 changer transitions 2/68 dead transitions. [2021-03-24 10:53:18,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 551 flow [2021-03-24 10:53:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 10:53:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 10:53:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1598 transitions. [2021-03-24 10:53:18,997 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8366492146596859 [2021-03-24 10:53:18,997 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1598 transitions. [2021-03-24 10:53:18,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1598 transitions. [2021-03-24 10:53:18,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:18,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1598 transitions. [2021-03-24 10:53:19,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 159.8) internal successors, (1598), 10 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,004 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,004 INFO L185 Difference]: Start difference. First operand has 79 places, 59 transitions, 371 flow. Second operand 10 states and 1598 transitions. [2021-03-24 10:53:19,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 68 transitions, 551 flow [2021-03-24 10:53:19,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 68 transitions, 538 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 10:53:19,009 INFO L241 Difference]: Finished difference. Result has 86 places, 62 transitions, 460 flow [2021-03-24 10:53:19,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=460, PETRI_PLACES=86, PETRI_TRANSITIONS=62} [2021-03-24 10:53:19,010 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2021-03-24 10:53:19,010 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 62 transitions, 460 flow [2021-03-24 10:53:19,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 158.22222222222223) internal successors, (1424), 9 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:19,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:19,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 10:53:19,012 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:19,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:19,012 INFO L82 PathProgramCache]: Analyzing trace with hash -114520185, now seen corresponding path program 2 times [2021-03-24 10:53:19,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:19,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163676000] [2021-03-24 10:53:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:19,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:19,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:19,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:19,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:19,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:53:19,170 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.4 percent of original size [2021-03-24 10:53:19,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-24 10:53:19,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 10:53:19,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 10:53:19,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:19,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163676000] [2021-03-24 10:53:19,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:19,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 10:53:19,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830277550] [2021-03-24 10:53:19,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 10:53:19,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:19,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 10:53:19,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-24 10:53:19,241 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 191 [2021-03-24 10:53:19,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 62 transitions, 460 flow. Second operand has 10 states, 10 states have (on average 154.2) internal successors, (1542), 10 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:19,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 191 [2021-03-24 10:53:19,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:19,433 INFO L129 PetriNetUnfolder]: 158/430 cut-off events. [2021-03-24 10:53:19,433 INFO L130 PetriNetUnfolder]: For 3258/3473 co-relation queries the response was YES. [2021-03-24 10:53:19,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2323 conditions, 430 events. 158/430 cut-off events. For 3258/3473 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2593 event pairs, 29 based on Foata normal form. 54/458 useless extension candidates. Maximal degree in co-relation 2272. Up to 212 conditions per place. [2021-03-24 10:53:19,440 INFO L132 encePairwiseOnDemand]: 181/191 looper letters, 25 selfloop transitions, 13 changer transitions 2/67 dead transitions. [2021-03-24 10:53:19,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 67 transitions, 608 flow [2021-03-24 10:53:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:53:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:53:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1403 transitions. [2021-03-24 10:53:19,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8161721931355439 [2021-03-24 10:53:19,443 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1403 transitions. [2021-03-24 10:53:19,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1403 transitions. [2021-03-24 10:53:19,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:19,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1403 transitions. [2021-03-24 10:53:19,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.88888888888889) internal successors, (1403), 9 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,462 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,462 INFO L185 Difference]: Start difference. First operand has 86 places, 62 transitions, 460 flow. Second operand 9 states and 1403 transitions. [2021-03-24 10:53:19,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 67 transitions, 608 flow [2021-03-24 10:53:19,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 67 transitions, 568 flow, removed 11 selfloop flow, removed 7 redundant places. [2021-03-24 10:53:19,469 INFO L241 Difference]: Finished difference. Result has 88 places, 63 transitions, 478 flow [2021-03-24 10:53:19,470 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=88, PETRI_TRANSITIONS=63} [2021-03-24 10:53:19,470 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2021-03-24 10:53:19,470 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 63 transitions, 478 flow [2021-03-24 10:53:19,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 154.2) internal successors, (1542), 10 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,471 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:19,471 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:19,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 10:53:19,471 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:19,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1148350189, now seen corresponding path program 3 times [2021-03-24 10:53:19,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:19,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269027026] [2021-03-24 10:53:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:19,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:19,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:19,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:19,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:53:19,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 10:53:19,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 10:53:19,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 10:53:19,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 10:53:19,656 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.8 percent of original size [2021-03-24 10:53:19,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-24 10:53:19,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:19,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269027026] [2021-03-24 10:53:19,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:19,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 10:53:19,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571714984] [2021-03-24 10:53:19,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 10:53:19,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:19,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 10:53:19,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-03-24 10:53:19,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2021-03-24 10:53:19,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 63 transitions, 478 flow. Second operand has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:19,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2021-03-24 10:53:19,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:19,906 INFO L129 PetriNetUnfolder]: 158/424 cut-off events. [2021-03-24 10:53:19,906 INFO L130 PetriNetUnfolder]: For 3498/3713 co-relation queries the response was YES. [2021-03-24 10:53:19,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2358 conditions, 424 events. 158/424 cut-off events. For 3498/3713 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2515 event pairs, 30 based on Foata normal form. 54/452 useless extension candidates. Maximal degree in co-relation 2307. Up to 199 conditions per place. [2021-03-24 10:53:19,913 INFO L132 encePairwiseOnDemand]: 180/191 looper letters, 22 selfloop transitions, 17 changer transitions 2/69 dead transitions. [2021-03-24 10:53:19,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 69 transitions, 642 flow [2021-03-24 10:53:19,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 10:53:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 10:53:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1721 transitions. [2021-03-24 10:53:19,917 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8191337458353165 [2021-03-24 10:53:19,917 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1721 transitions. [2021-03-24 10:53:19,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1721 transitions. [2021-03-24 10:53:19,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:19,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1721 transitions. [2021-03-24 10:53:19,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 156.45454545454547) internal successors, (1721), 11 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 191.0) internal successors, (2292), 12 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,924 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 191.0) internal successors, (2292), 12 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,924 INFO L185 Difference]: Start difference. First operand has 88 places, 63 transitions, 478 flow. Second operand 11 states and 1721 transitions. [2021-03-24 10:53:19,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 69 transitions, 642 flow [2021-03-24 10:53:19,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 69 transitions, 602 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 10:53:19,930 INFO L241 Difference]: Finished difference. Result has 92 places, 64 transitions, 511 flow [2021-03-24 10:53:19,931 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=511, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2021-03-24 10:53:19,931 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2021-03-24 10:53:19,931 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 511 flow [2021-03-24 10:53:19,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:19,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:19,931 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:19,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 10:53:19,932 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:19,932 INFO L82 PathProgramCache]: Analyzing trace with hash -100439905, now seen corresponding path program 4 times [2021-03-24 10:53:19,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:19,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558324714] [2021-03-24 10:53:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:19,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:19,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:19,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:53:19,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:19,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:20,007 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-03-24 10:53:20,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 10:53:20,030 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-03-24 10:53:20,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-24 10:53:20,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:20,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:53:20,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:20,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558324714] [2021-03-24 10:53:20,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:20,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 10:53:20,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282400651] [2021-03-24 10:53:20,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 10:53:20,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:20,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 10:53:20,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-24 10:53:20,081 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2021-03-24 10:53:20,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 511 flow. Second operand has 9 states, 9 states have (on average 155.33333333333334) internal successors, (1398), 9 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:20,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2021-03-24 10:53:20,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:20,257 INFO L129 PetriNetUnfolder]: 130/435 cut-off events. [2021-03-24 10:53:20,257 INFO L130 PetriNetUnfolder]: For 3870/4082 co-relation queries the response was YES. [2021-03-24 10:53:20,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 435 events. 130/435 cut-off events. For 3870/4082 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2882 event pairs, 17 based on Foata normal form. 61/468 useless extension candidates. Maximal degree in co-relation 2265. Up to 143 conditions per place. [2021-03-24 10:53:20,264 INFO L132 encePairwiseOnDemand]: 183/191 looper letters, 28 selfloop transitions, 12 changer transitions 2/69 dead transitions. [2021-03-24 10:53:20,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 69 transitions, 667 flow [2021-03-24 10:53:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:53:20,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:53:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1410 transitions. [2021-03-24 10:53:20,268 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8202443280977313 [2021-03-24 10:53:20,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1410 transitions. [2021-03-24 10:53:20,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1410 transitions. [2021-03-24 10:53:20,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:20,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1410 transitions. [2021-03-24 10:53:20,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 156.66666666666666) internal successors, (1410), 9 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,274 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,275 INFO L185 Difference]: Start difference. First operand has 92 places, 64 transitions, 511 flow. Second operand 9 states and 1410 transitions. [2021-03-24 10:53:20,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 69 transitions, 667 flow [2021-03-24 10:53:20,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 69 transitions, 603 flow, removed 16 selfloop flow, removed 10 redundant places. [2021-03-24 10:53:20,282 INFO L241 Difference]: Finished difference. Result has 91 places, 64 transitions, 494 flow [2021-03-24 10:53:20,282 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=494, PETRI_PLACES=91, PETRI_TRANSITIONS=64} [2021-03-24 10:53:20,283 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2021-03-24 10:53:20,283 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 64 transitions, 494 flow [2021-03-24 10:53:20,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 155.33333333333334) internal successors, (1398), 9 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,283 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:20,283 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:20,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 10:53:20,283 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:20,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1295489579, now seen corresponding path program 1 times [2021-03-24 10:53:20,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:20,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952674395] [2021-03-24 10:53:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:20,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:20,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:20,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:20,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952674395] [2021-03-24 10:53:20,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:20,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:53:20,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680176720] [2021-03-24 10:53:20,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:53:20,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:20,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:53:20,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:53:20,354 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 191 [2021-03-24 10:53:20,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 64 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:20,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 191 [2021-03-24 10:53:20,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:20,625 INFO L129 PetriNetUnfolder]: 989/1919 cut-off events. [2021-03-24 10:53:20,626 INFO L130 PetriNetUnfolder]: For 8337/9487 co-relation queries the response was YES. [2021-03-24 10:53:20,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6909 conditions, 1919 events. 989/1919 cut-off events. For 8337/9487 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 14594 event pairs, 454 based on Foata normal form. 259/1869 useless extension candidates. Maximal degree in co-relation 6861. Up to 1070 conditions per place. [2021-03-24 10:53:20,652 INFO L132 encePairwiseOnDemand]: 184/191 looper letters, 13 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2021-03-24 10:53:20,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 77 transitions, 566 flow [2021-03-24 10:53:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:53:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:53:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 817 transitions. [2021-03-24 10:53:20,654 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8554973821989529 [2021-03-24 10:53:20,654 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 817 transitions. [2021-03-24 10:53:20,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 817 transitions. [2021-03-24 10:53:20,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:20,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 817 transitions. [2021-03-24 10:53:20,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,659 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,659 INFO L185 Difference]: Start difference. First operand has 91 places, 64 transitions, 494 flow. Second operand 5 states and 817 transitions. [2021-03-24 10:53:20,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 77 transitions, 566 flow [2021-03-24 10:53:20,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 546 flow, removed 5 selfloop flow, removed 7 redundant places. [2021-03-24 10:53:20,673 INFO L241 Difference]: Finished difference. Result has 89 places, 73 transitions, 561 flow [2021-03-24 10:53:20,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2021-03-24 10:53:20,673 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2021-03-24 10:53:20,673 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 561 flow [2021-03-24 10:53:20,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,674 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:20,674 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:20,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 10:53:20,674 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:20,674 INFO L82 PathProgramCache]: Analyzing trace with hash 526435113, now seen corresponding path program 1 times [2021-03-24 10:53:20,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:20,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548218499] [2021-03-24 10:53:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:20,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:20,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:20,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:20,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:20,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:20,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548218499] [2021-03-24 10:53:20,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:20,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:53:20,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100477359] [2021-03-24 10:53:20,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:53:20,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:20,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:53:20,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:53:20,737 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 191 [2021-03-24 10:53:20,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 561 flow. Second operand has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:20,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 191 [2021-03-24 10:53:20,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:20,967 INFO L129 PetriNetUnfolder]: 678/1413 cut-off events. [2021-03-24 10:53:20,967 INFO L130 PetriNetUnfolder]: For 7861/13317 co-relation queries the response was YES. [2021-03-24 10:53:20,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6408 conditions, 1413 events. 678/1413 cut-off events. For 7861/13317 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 10506 event pairs, 134 based on Foata normal form. 471/1659 useless extension candidates. Maximal degree in co-relation 6362. Up to 949 conditions per place. [2021-03-24 10:53:20,985 INFO L132 encePairwiseOnDemand]: 184/191 looper letters, 13 selfloop transitions, 19 changer transitions 0/86 dead transitions. [2021-03-24 10:53:20,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 86 transitions, 701 flow [2021-03-24 10:53:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:53:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:53:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1144 transitions. [2021-03-24 10:53:20,989 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8556469708302169 [2021-03-24 10:53:20,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1144 transitions. [2021-03-24 10:53:20,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1144 transitions. [2021-03-24 10:53:20,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:20,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1144 transitions. [2021-03-24 10:53:20,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.42857142857142) internal successors, (1144), 7 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:20,995 INFO L185 Difference]: Start difference. First operand has 89 places, 73 transitions, 561 flow. Second operand 7 states and 1144 transitions. [2021-03-24 10:53:20,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 86 transitions, 701 flow [2021-03-24 10:53:21,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:53:21,008 INFO L241 Difference]: Finished difference. Result has 97 places, 82 transitions, 702 flow [2021-03-24 10:53:21,008 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=702, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2021-03-24 10:53:21,008 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2021-03-24 10:53:21,008 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 702 flow [2021-03-24 10:53:21,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,008 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:21,008 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:21,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 10:53:21,008 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:21,009 INFO L82 PathProgramCache]: Analyzing trace with hash -168572393, now seen corresponding path program 1 times [2021-03-24 10:53:21,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:21,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215435924] [2021-03-24 10:53:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:21,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:21,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:21,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215435924] [2021-03-24 10:53:21,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:21,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:53:21,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643883671] [2021-03-24 10:53:21,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:53:21,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:21,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:53:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:53:21,066 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 191 [2021-03-24 10:53:21,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 702 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:21,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 191 [2021-03-24 10:53:21,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:21,396 INFO L129 PetriNetUnfolder]: 1081/2169 cut-off events. [2021-03-24 10:53:21,397 INFO L130 PetriNetUnfolder]: For 13881/19735 co-relation queries the response was YES. [2021-03-24 10:53:21,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11587 conditions, 2169 events. 1081/2169 cut-off events. For 13881/19735 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 16903 event pairs, 221 based on Foata normal form. 112/1904 useless extension candidates. Maximal degree in co-relation 11537. Up to 1535 conditions per place. [2021-03-24 10:53:21,421 INFO L132 encePairwiseOnDemand]: 187/191 looper letters, 5 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2021-03-24 10:53:21,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 85 transitions, 758 flow [2021-03-24 10:53:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:53:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:53:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 851 transitions. [2021-03-24 10:53:21,423 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8910994764397906 [2021-03-24 10:53:21,423 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 851 transitions. [2021-03-24 10:53:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 851 transitions. [2021-03-24 10:53:21,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:21,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 851 transitions. [2021-03-24 10:53:21,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,427 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,427 INFO L185 Difference]: Start difference. First operand has 97 places, 82 transitions, 702 flow. Second operand 5 states and 851 transitions. [2021-03-24 10:53:21,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 85 transitions, 758 flow [2021-03-24 10:53:21,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 85 transitions, 704 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-03-24 10:53:21,455 INFO L241 Difference]: Finished difference. Result has 101 places, 84 transitions, 701 flow [2021-03-24 10:53:21,455 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=701, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2021-03-24 10:53:21,455 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 44 predicate places. [2021-03-24 10:53:21,455 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 701 flow [2021-03-24 10:53:21,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:21,456 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:21,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 10:53:21,456 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1650155700, now seen corresponding path program 1 times [2021-03-24 10:53:21,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:21,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099762708] [2021-03-24 10:53:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:21,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:21,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099762708] [2021-03-24 10:53:21,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:21,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 10:53:21,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63350224] [2021-03-24 10:53:21,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 10:53:21,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:21,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 10:53:21,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 10:53:21,530 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 191 [2021-03-24 10:53:21,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:21,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 191 [2021-03-24 10:53:21,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:21,801 INFO L129 PetriNetUnfolder]: 744/1526 cut-off events. [2021-03-24 10:53:21,801 INFO L130 PetriNetUnfolder]: For 13458/23724 co-relation queries the response was YES. [2021-03-24 10:53:21,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8084 conditions, 1526 events. 744/1526 cut-off events. For 13458/23724 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 11199 event pairs, 26 based on Foata normal form. 717/1935 useless extension candidates. Maximal degree in co-relation 8032. Up to 1047 conditions per place. [2021-03-24 10:53:21,824 INFO L132 encePairwiseOnDemand]: 184/191 looper letters, 6 selfloop transitions, 28 changer transitions 8/87 dead transitions. [2021-03-24 10:53:21,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 87 transitions, 777 flow [2021-03-24 10:53:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:53:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:53:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1471 transitions. [2021-03-24 10:53:21,826 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8557300756253636 [2021-03-24 10:53:21,826 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1471 transitions. [2021-03-24 10:53:21,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1471 transitions. [2021-03-24 10:53:21,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:21,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1471 transitions. [2021-03-24 10:53:21,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.44444444444446) internal successors, (1471), 9 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,832 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,832 INFO L185 Difference]: Start difference. First operand has 101 places, 84 transitions, 701 flow. Second operand 9 states and 1471 transitions. [2021-03-24 10:53:21,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 87 transitions, 777 flow [2021-03-24 10:53:21,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 87 transitions, 740 flow, removed 5 selfloop flow, removed 7 redundant places. [2021-03-24 10:53:21,851 INFO L241 Difference]: Finished difference. Result has 105 places, 79 transitions, 659 flow [2021-03-24 10:53:21,851 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=659, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2021-03-24 10:53:21,852 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 48 predicate places. [2021-03-24 10:53:21,852 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 659 flow [2021-03-24 10:53:21,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:21,853 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:21,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 10:53:21,853 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash -668350254, now seen corresponding path program 1 times [2021-03-24 10:53:21,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:21,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551140490] [2021-03-24 10:53:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:21,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:21,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:21,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:21,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551140490] [2021-03-24 10:53:21,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:21,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:53:21,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016344377] [2021-03-24 10:53:21,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:53:21,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:21,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:53:21,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:53:21,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 191 [2021-03-24 10:53:21,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 659 flow. Second operand has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:21,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:21,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 191 [2021-03-24 10:53:21,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:22,293 INFO L129 PetriNetUnfolder]: 1301/2692 cut-off events. [2021-03-24 10:53:22,294 INFO L130 PetriNetUnfolder]: For 21507/29110 co-relation queries the response was YES. [2021-03-24 10:53:22,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15233 conditions, 2692 events. 1301/2692 cut-off events. For 21507/29110 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 23374 event pairs, 50 based on Foata normal form. 47/2205 useless extension candidates. Maximal degree in co-relation 15181. Up to 1845 conditions per place. [2021-03-24 10:53:22,323 INFO L132 encePairwiseOnDemand]: 187/191 looper letters, 6 selfloop transitions, 2 changer transitions 1/83 dead transitions. [2021-03-24 10:53:22,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 83 transitions, 737 flow [2021-03-24 10:53:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:53:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:53:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 840 transitions. [2021-03-24 10:53:22,325 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8795811518324608 [2021-03-24 10:53:22,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 840 transitions. [2021-03-24 10:53:22,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 840 transitions. [2021-03-24 10:53:22,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:22,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 840 transitions. [2021-03-24 10:53:22,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:22,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:22,328 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:22,328 INFO L185 Difference]: Start difference. First operand has 105 places, 79 transitions, 659 flow. Second operand 5 states and 840 transitions. [2021-03-24 10:53:22,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 83 transitions, 737 flow [2021-03-24 10:53:22,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 83 transitions, 623 flow, removed 39 selfloop flow, removed 7 redundant places. [2021-03-24 10:53:22,566 INFO L241 Difference]: Finished difference. Result has 103 places, 80 transitions, 564 flow [2021-03-24 10:53:22,566 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=564, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2021-03-24 10:53:22,566 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2021-03-24 10:53:22,566 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 564 flow [2021-03-24 10:53:22,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:22,567 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:22,567 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:22,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 10:53:22,567 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:22,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:22,567 INFO L82 PathProgramCache]: Analyzing trace with hash 300894286, now seen corresponding path program 2 times [2021-03-24 10:53:22,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:22,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516992191] [2021-03-24 10:53:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:53:22,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:22,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:22,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:22,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:22,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:22,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:22,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:22,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:22,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:22,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:53:22,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:53:22,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:53:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:53:22,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516992191] [2021-03-24 10:53:22,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:53:22,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 10:53:22,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157790882] [2021-03-24 10:53:22,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 10:53:22,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:53:22,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 10:53:22,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 10:53:22,646 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 191 [2021-03-24 10:53:22,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 564 flow. Second operand has 7 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:22,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:53:22,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 191 [2021-03-24 10:53:22,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:53:23,031 INFO L129 PetriNetUnfolder]: 1177/2433 cut-off events. [2021-03-24 10:53:23,032 INFO L130 PetriNetUnfolder]: For 14815/30173 co-relation queries the response was YES. [2021-03-24 10:53:23,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10934 conditions, 2433 events. 1177/2433 cut-off events. For 14815/30173 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 20872 event pairs, 0 based on Foata normal form. 1220/3132 useless extension candidates. Maximal degree in co-relation 10899. Up to 860 conditions per place. [2021-03-24 10:53:23,057 INFO L132 encePairwiseOnDemand]: 184/191 looper letters, 2 selfloop transitions, 30 changer transitions 20/85 dead transitions. [2021-03-24 10:53:23,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 85 transitions, 698 flow [2021-03-24 10:53:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 10:53:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 10:53:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1790 transitions. [2021-03-24 10:53:23,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.851975249881009 [2021-03-24 10:53:23,060 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1790 transitions. [2021-03-24 10:53:23,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1790 transitions. [2021-03-24 10:53:23,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:53:23,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1790 transitions. [2021-03-24 10:53:23,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 162.72727272727272) internal successors, (1790), 11 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:23,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 191.0) internal successors, (2292), 12 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:23,067 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 191.0) internal successors, (2292), 12 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:23,067 INFO L185 Difference]: Start difference. First operand has 103 places, 80 transitions, 564 flow. Second operand 11 states and 1790 transitions. [2021-03-24 10:53:23,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 85 transitions, 698 flow [2021-03-24 10:53:23,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 85 transitions, 664 flow, removed 13 selfloop flow, removed 6 redundant places. [2021-03-24 10:53:23,257 INFO L241 Difference]: Finished difference. Result has 109 places, 65 transitions, 492 flow [2021-03-24 10:53:23,257 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=492, PETRI_PLACES=109, PETRI_TRANSITIONS=65} [2021-03-24 10:53:23,257 INFO L343 CegarLoopForPetriNet]: 57 programPoint places, 52 predicate places. [2021-03-24 10:53:23,257 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 65 transitions, 492 flow [2021-03-24 10:53:23,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:53:23,257 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:53:23,258 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:53:23,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 10:53:23,258 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:53:23,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:53:23,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1444904226, now seen corresponding path program 1 times [2021-03-24 10:53:23,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:53:23,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859661515] [2021-03-24 10:53:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:53:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:53:23,294 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:53:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:53:23,340 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:53:23,385 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:53:23,385 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:53:23,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 10:53:23,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:53:23 BasicIcfg [2021-03-24 10:53:23,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 10:53:23,498 INFO L168 Benchmark]: Toolchain (without parser) took 17115.44 ms. Allocated memory was 255.9 MB in the beginning and 625.0 MB in the end (delta: 369.1 MB). Free memory was 234.6 MB in the beginning and 525.7 MB in the end (delta: -291.1 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.0 GB. [2021-03-24 10:53:23,498 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:53:23,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.20 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.6 MB in the beginning and 311.5 MB in the end (delta: -76.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-24 10:53:23,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.79 ms. Allocated memory is still 352.3 MB. Free memory was 311.5 MB in the beginning and 308.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:53:23,498 INFO L168 Benchmark]: Boogie Preprocessor took 50.06 ms. Allocated memory is still 352.3 MB. Free memory was 308.7 MB in the beginning and 306.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:53:23,502 INFO L168 Benchmark]: RCFGBuilder took 1444.09 ms. Allocated memory is still 352.3 MB. Free memory was 306.6 MB in the beginning and 230.3 MB in the end (delta: 76.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.0 GB. [2021-03-24 10:53:23,502 INFO L168 Benchmark]: TraceAbstraction took 15076.76 ms. Allocated memory was 352.3 MB in the beginning and 625.0 MB in the end (delta: 272.6 MB). Free memory was 229.5 MB in the beginning and 525.7 MB in the end (delta: -296.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:53:23,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 453.20 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.6 MB in the beginning and 311.5 MB in the end (delta: -76.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 75.79 ms. Allocated memory is still 352.3 MB. Free memory was 311.5 MB in the beginning and 308.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 50.06 ms. Allocated memory is still 352.3 MB. Free memory was 308.7 MB in the beginning and 306.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1444.09 ms. Allocated memory is still 352.3 MB. Free memory was 306.6 MB in the beginning and 230.3 MB in the end (delta: 76.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 15076.76 ms. Allocated memory was 352.3 MB in the beginning and 625.0 MB in the end (delta: 272.6 MB). Free memory was 229.5 MB in the beginning and 525.7 MB in the end (delta: -296.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7743.5ms, 123 PlacesBefore, 57 PlacesAfterwards, 112 TransitionsBefore, 45 TransitionsAfterwards, 2598 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 75 TotalNumberOfCompositions, 4306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2405, positive: 2302, positive conditional: 0, positive unconditional: 2302, negative: 103, negative conditional: 0, negative unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1267, positive: 1239, positive conditional: 0, positive unconditional: 1239, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1267, positive: 1239, positive conditional: 0, positive unconditional: 1239, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2405, positive: 1063, positive conditional: 0, positive unconditional: 1063, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 1267, unknown conditional: 0, unknown unconditional: 1267] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int __unbuffered_p3_EBX = 0; [L716] 0 int a = 0; [L718] 0 int b = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L724] 0 int y = 0; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L726] 0 int z = 0; [L727] 0 _Bool z$flush_delayed; [L728] 0 int z$mem_tmp; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0] [L729] 0 _Bool z$r_buff0_thd0; [L730] 0 _Bool z$r_buff0_thd1; [L731] 0 _Bool z$r_buff0_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0] [L732] 0 _Bool z$r_buff0_thd3; [L733] 0 _Bool z$r_buff0_thd4; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0] [L734] 0 _Bool z$r_buff1_thd0; [L735] 0 _Bool z$r_buff1_thd1; [L736] 0 _Bool z$r_buff1_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0] [L737] 0 _Bool z$r_buff1_thd3; [L738] 0 _Bool z$r_buff1_thd4; [L739] 0 _Bool z$read_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0] [L740] 0 int *z$read_delayed_var; [L741] 0 int z$w_buff0; [L742] 0 _Bool z$w_buff0_used; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0] [L743] 0 int z$w_buff1; [L744] 0 _Bool z$w_buff1_used; VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1261; [L845] FCALL, FORK 0 pthread_create(&t1261, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L846] 0 pthread_t t1262; [L847] FCALL, FORK 0 pthread_create(&t1262, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L848] 0 pthread_t t1263; [L849] FCALL, FORK 0 pthread_create(&t1263, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L850] 0 pthread_t t1264; [L851] FCALL, FORK 0 pthread_create(&t1264, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L800] 4 z$w_buff1 = z$w_buff0 [L801] 4 z$w_buff0 = 2 [L802] 4 z$w_buff1_used = z$w_buff0_used [L803] 4 z$w_buff0_used = (_Bool)1 [L18] COND FALSE 4 !(!expression) [L805] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L806] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L807] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L808] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L809] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L810] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L813] 4 a = 1 [L816] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L819] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L750] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L765] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L768] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L780] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L783] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L786] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L786] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L786] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L786] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L787] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L787] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L788] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L788] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L789] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L789] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L790] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L790] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 1 return 0; [L773] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L775] 2 return 0; [L793] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L795] 3 return 0; [L822] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L822] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L823] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L823] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L824] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L824] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L825] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L825] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L826] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L826] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L829] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 4 return 0; [L853] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L3] COND FALSE 0 !(!cond) [L857] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L857] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L857] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L857] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L858] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L858] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L859] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L859] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L860] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L860] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L861] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L861] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L864] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L865] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L866] 0 z$flush_delayed = weak$$choice2 [L867] 0 z$mem_tmp = z [L868] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L868] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L869] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L869] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L870] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L870] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L871] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L871] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L872] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L872] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L873] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L874] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L874] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L876] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L876] 0 z = z$flush_delayed ? z$mem_tmp : z [L877] 0 z$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=255, x=2, y=2, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 115 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 14832.9ms, OverallIterations: 20, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4434.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7848.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 122 SDtfs, 151 SDslu, 159 SDs, 0 SdLazy, 622 SolverSat, 246 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 671.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 797.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=702occurred in iteration=15, InterpolantAutomatonStates: 135, 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: 63.1ms SsaConstructionTime, 599.7ms SatisfiabilityAnalysisTime, 1558.7ms InterpolantComputationTime, 542 NumberOfCodeBlocks, 542 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 487 ConstructedInterpolants, 0 QuantifiedInterpolants, 2430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 incorrect! Received shutdown request...