/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/safe029_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:06:57,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:06:57,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:06:57,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:06:57,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:06:57,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:06:57,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:06:57,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:06:57,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:06:57,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:06:57,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:06:57,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:06:57,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:06:57,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:06:57,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:06:57,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:06:57,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:06:57,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:06:57,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:06:57,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:06:57,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:06:57,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:06:57,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:06:57,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:06:57,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:06:57,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:06:57,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:06:57,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:06:57,888 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 11:06:57,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:06:57,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:06:57,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:06:57,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:06:57,929 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:06:57,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:06:57,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:06:57,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:06:57,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:06:57,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:06:57,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:06:57,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:06:57,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:06:57,931 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:06:57,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:06:57,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:06:57,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:06:57,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:06:57,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:06:57,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:06:57,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:06:57,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:06:57,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:06:57,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:06:57,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:06:57,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:06:57,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:06:57,933 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:06:57,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:06:57,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:06:58,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:06:58,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:06:58,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:06:58,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:06:58,270 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:06:58,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-03-24 11:06:58,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8293ffbfb/01de475bc20343998c56b708d0030c9f/FLAGd688d314d [2021-03-24 11:06:58,895 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:06:58,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-03-24 11:06:58,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8293ffbfb/01de475bc20343998c56b708d0030c9f/FLAGd688d314d [2021-03-24 11:06:59,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8293ffbfb/01de475bc20343998c56b708d0030c9f [2021-03-24 11:06:59,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:06:59,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:06:59,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:06:59,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:06:59,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:06:59,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:06:59" (1/1) ... [2021-03-24 11:06:59,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1faf490a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:59, skipping insertion in model container [2021-03-24 11:06:59,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:06:59" (1/1) ... [2021-03-24 11:06:59,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:06:59,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:06:59,586 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/safe029_pso.oepc.i[950,963] [2021-03-24 11:06:59,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:06:59,850 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:06:59,863 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/safe029_pso.oepc.i[950,963] [2021-03-24 11:06:59,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:07:00,000 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:07:00,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00 WrapperNode [2021-03-24 11:07:00,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:07:00,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:00,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:07:00,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:07:00,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:00,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:07:00,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:07:00,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:07:00,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (1/1) ... [2021-03-24 11:07:00,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:07:00,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:07:00,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:07:00,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:07:00,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (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 11:07:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:07:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:07:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:07:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:07:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:07:00,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:07:00,197 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:07:00,198 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:07:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:07:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:07:00,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:07:00,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:07:00,199 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 11:07:01,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:07:01,702 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 11:07:01,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:01 BoogieIcfgContainer [2021-03-24 11:07:01,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:07:01,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:07:01,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:07:01,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:07:01,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:06:59" (1/3) ... [2021-03-24 11:07:01,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615eadd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:01, skipping insertion in model container [2021-03-24 11:07:01,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:00" (2/3) ... [2021-03-24 11:07:01,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615eadd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:01, skipping insertion in model container [2021-03-24 11:07:01,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:01" (3/3) ... [2021-03-24 11:07:01,709 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_pso.oepc.i [2021-03-24 11:07:01,715 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:07:01,718 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 11:07:01,719 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:07:01,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,750 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,752 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,752 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,753 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:01,755 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:07:01,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 11:07:01,783 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:07:01,784 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:07:01,784 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:07:01,784 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:07:01,784 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:07:01,784 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:07:01,784 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:07:01,784 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:07:01,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 11:07:01,817 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 11:07:01,817 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:01,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 11:07:01,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 168 flow [2021-03-24 11:07:01,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:01,824 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:07:01,831 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:01,834 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:01,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 160 flow [2021-03-24 11:07:01,850 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-24 11:07:01,850 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:01,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-24 11:07:01,852 INFO L142 LiptonReduction]: Number of co-enabled transitions 926 [2021-03-24 11:07:02,921 WARN L205 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 184 [2021-03-24 11:07:03,232 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2021-03-24 11:07:04,428 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 308 DAG size of output: 263 [2021-03-24 11:07:05,014 WARN L205 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2021-03-24 11:07:05,352 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 11:07:05,687 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 11:07:06,485 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-24 11:07:06,796 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-24 11:07:07,362 WARN L205 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-03-24 11:07:07,939 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-03-24 11:07:08,208 INFO L154 LiptonReduction]: Checked pairs total: 1628 [2021-03-24 11:07:08,209 INFO L156 LiptonReduction]: Total number of compositions: 55 [2021-03-24 11:07:08,211 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6387 [2021-03-24 11:07:08,216 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-24 11:07:08,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:08,216 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:08,217 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:08,217 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:08,222 INFO L82 PathProgramCache]: Analyzing trace with hash 730483881, now seen corresponding path program 1 times [2021-03-24 11:07:08,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:08,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107610519] [2021-03-24 11:07:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:08,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:08,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:08,396 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 11:07:08,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107610519] [2021-03-24 11:07:08,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:08,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:07:08,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513742698] [2021-03-24 11:07:08,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:07:08,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:08,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:07:08,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:07:08,413 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-03-24 11:07:08,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 11:07:08,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:08,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-03-24 11:07:08,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:08,509 INFO L129 PetriNetUnfolder]: 23/89 cut-off events. [2021-03-24 11:07:08,509 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:08,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 89 events. 23/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 340 event pairs, 16 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 130. Up to 37 conditions per place. [2021-03-24 11:07:08,510 INFO L132 encePairwiseOnDemand]: 130/134 looper letters, 7 selfloop transitions, 2 changer transitions 5/30 dead transitions. [2021-03-24 11:07:08,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 88 flow [2021-03-24 11:07:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:07:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:07:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-03-24 11:07:08,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8706467661691543 [2021-03-24 11:07:08,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-03-24 11:07:08,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-03-24 11:07:08,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:08,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-03-24 11:07:08,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 11:07:08,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 11:07:08,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 11:07:08,544 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 64 flow. Second operand 3 states and 350 transitions. [2021-03-24 11:07:08,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 88 flow [2021-03-24 11:07:08,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:08,547 INFO L241 Difference]: Finished difference. Result has 33 places, 22 transitions, 52 flow [2021-03-24 11:07:08,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2021-03-24 11:07:08,549 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2021-03-24 11:07:08,549 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 52 flow [2021-03-24 11:07:08,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 11:07:08,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:08,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:08,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:07:08,550 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1358233529, now seen corresponding path program 1 times [2021-03-24 11:07:08,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:08,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103236056] [2021-03-24 11:07:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:08,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:08,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:08,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:08,754 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 11:07:08,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103236056] [2021-03-24 11:07:08,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:08,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:08,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261654110] [2021-03-24 11:07:08,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:08,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:08,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:08,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:08,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 134 [2021-03-24 11:07:08,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 11:07:08,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:08,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 134 [2021-03-24 11:07:08,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:08,786 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2021-03-24 11:07:08,786 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:08,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 2 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 65. Up to 15 conditions per place. [2021-03-24 11:07:08,787 INFO L132 encePairwiseOnDemand]: 129/134 looper letters, 4 selfloop transitions, 3 changer transitions 5/29 dead transitions. [2021-03-24 11:07:08,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 90 flow [2021-03-24 11:07:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2021-03-24 11:07:08,789 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8641791044776119 [2021-03-24 11:07:08,789 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2021-03-24 11:07:08,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2021-03-24 11:07:08,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:08,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2021-03-24 11:07:08,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 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 11:07:08,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 11:07:08,794 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 11:07:08,794 INFO L185 Difference]: Start difference. First operand has 33 places, 22 transitions, 52 flow. Second operand 5 states and 579 transitions. [2021-03-24 11:07:08,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 90 flow [2021-03-24 11:07:08,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:08,795 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 75 flow [2021-03-24 11:07:08,795 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-24 11:07:08,796 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2021-03-24 11:07:08,796 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 75 flow [2021-03-24 11:07:08,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 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 11:07:08,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:08,797 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:08,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:07:08,797 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:08,797 INFO L82 PathProgramCache]: Analyzing trace with hash 818290874, now seen corresponding path program 1 times [2021-03-24 11:07:08,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:08,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966920607] [2021-03-24 11:07:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:08,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:08,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:08,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:08,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:08,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:08,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:08,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:08,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966920607] [2021-03-24 11:07:08,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:08,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:08,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114370588] [2021-03-24 11:07:08,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:08,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:08,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:08,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:08,945 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 134 [2021-03-24 11:07:08,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 75 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 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 11:07:08,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:08,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 134 [2021-03-24 11:07:08,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:09,062 INFO L129 PetriNetUnfolder]: 64/155 cut-off events. [2021-03-24 11:07:09,063 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2021-03-24 11:07:09,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 155 events. 64/155 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 582 event pairs, 16 based on Foata normal form. 12/162 useless extension candidates. Maximal degree in co-relation 342. Up to 94 conditions per place. [2021-03-24 11:07:09,065 INFO L132 encePairwiseOnDemand]: 125/134 looper letters, 8 selfloop transitions, 9 changer transitions 9/40 dead transitions. [2021-03-24 11:07:09,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 163 flow [2021-03-24 11:07:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:07:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:07:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 821 transitions. [2021-03-24 11:07:09,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7658582089552238 [2021-03-24 11:07:09,070 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 821 transitions. [2021-03-24 11:07:09,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 821 transitions. [2021-03-24 11:07:09,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:09,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 821 transitions. [2021-03-24 11:07:09,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.625) internal successors, (821), 8 states have internal predecessors, (821), 0 states have call successors, (0), 0 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 11:07:09,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:09,076 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:09,076 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 75 flow. Second operand 8 states and 821 transitions. [2021-03-24 11:07:09,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 163 flow [2021-03-24 11:07:09,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 158 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:09,079 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 134 flow [2021-03-24 11:07:09,080 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=134, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2021-03-24 11:07:09,080 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2021-03-24 11:07:09,080 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 134 flow [2021-03-24 11:07:09,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 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 11:07:09,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,081 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:07:09,081 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,082 INFO L82 PathProgramCache]: Analyzing trace with hash -992684855, now seen corresponding path program 1 times [2021-03-24 11:07:09,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698147521] [2021-03-24 11:07:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:09,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:09,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:09,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:09,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:07:09,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 11:07:09,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:09,211 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 11:07:09,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698147521] [2021-03-24 11:07:09,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:09,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:09,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577046196] [2021-03-24 11:07:09,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:09,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:09,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:09,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:09,215 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 134 [2021-03-24 11:07:09,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:09,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:09,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 134 [2021-03-24 11:07:09,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:09,376 INFO L129 PetriNetUnfolder]: 69/160 cut-off events. [2021-03-24 11:07:09,376 INFO L130 PetriNetUnfolder]: For 304/310 co-relation queries the response was YES. [2021-03-24 11:07:09,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 160 events. 69/160 cut-off events. For 304/310 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 594 event pairs, 18 based on Foata normal form. 16/171 useless extension candidates. Maximal degree in co-relation 514. Up to 93 conditions per place. [2021-03-24 11:07:09,378 INFO L132 encePairwiseOnDemand]: 125/134 looper letters, 15 selfloop transitions, 11 changer transitions 9/49 dead transitions. [2021-03-24 11:07:09,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 297 flow [2021-03-24 11:07:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:07:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:07:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 886 transitions. [2021-03-24 11:07:09,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7346600331674958 [2021-03-24 11:07:09,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 886 transitions. [2021-03-24 11:07:09,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 886 transitions. [2021-03-24 11:07:09,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:09,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 886 transitions. [2021-03-24 11:07:09,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.44444444444444) internal successors, (886), 9 states have internal predecessors, (886), 0 states have call successors, (0), 0 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 11:07:09,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 11:07:09,387 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 11:07:09,387 INFO L185 Difference]: Start difference. First operand has 42 places, 30 transitions, 134 flow. Second operand 9 states and 886 transitions. [2021-03-24 11:07:09,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 297 flow [2021-03-24 11:07:09,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 293 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:09,391 INFO L241 Difference]: Finished difference. Result has 51 places, 39 transitions, 238 flow [2021-03-24 11:07:09,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=238, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2021-03-24 11:07:09,391 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2021-03-24 11:07:09,391 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 238 flow [2021-03-24 11:07:09,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 96.0) internal successors, (672), 7 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:09,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:07:09,392 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,393 INFO L82 PathProgramCache]: Analyzing trace with hash 407557705, now seen corresponding path program 2 times [2021-03-24 11:07:09,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321140921] [2021-03-24 11:07:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:09,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:09,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:09,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:09,449 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 11:07:09,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321140921] [2021-03-24 11:07:09,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:09,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:09,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137058966] [2021-03-24 11:07:09,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:09,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:09,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:09,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:09,451 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 134 [2021-03-24 11:07:09,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:07:09,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:09,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 134 [2021-03-24 11:07:09,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:09,496 INFO L129 PetriNetUnfolder]: 66/187 cut-off events. [2021-03-24 11:07:09,496 INFO L130 PetriNetUnfolder]: For 1125/1146 co-relation queries the response was YES. [2021-03-24 11:07:09,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 187 events. 66/187 cut-off events. For 1125/1146 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 906 event pairs, 11 based on Foata normal form. 19/194 useless extension candidates. Maximal degree in co-relation 779. Up to 76 conditions per place. [2021-03-24 11:07:09,498 INFO L132 encePairwiseOnDemand]: 130/134 looper letters, 6 selfloop transitions, 3 changer transitions 3/43 dead transitions. [2021-03-24 11:07:09,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 301 flow [2021-03-24 11:07:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:09,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2021-03-24 11:07:09,500 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8597014925373134 [2021-03-24 11:07:09,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2021-03-24 11:07:09,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2021-03-24 11:07:09,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:09,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2021-03-24 11:07:09,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 11:07:09,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 11:07:09,504 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 11:07:09,504 INFO L185 Difference]: Start difference. First operand has 51 places, 39 transitions, 238 flow. Second operand 5 states and 576 transitions. [2021-03-24 11:07:09,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 301 flow [2021-03-24 11:07:09,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 285 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:09,508 INFO L241 Difference]: Finished difference. Result has 53 places, 39 transitions, 243 flow [2021-03-24 11:07:09,508 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2021-03-24 11:07:09,508 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2021-03-24 11:07:09,508 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 243 flow [2021-03-24 11:07:09,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:07:09,509 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,509 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:07:09,509 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash -457558520, now seen corresponding path program 1 times [2021-03-24 11:07:09,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588337111] [2021-03-24 11:07:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:09,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:09,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:09,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:09,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:09,602 INFO L142 QuantifierPusher]: treesize reduction 17, result has 45.2 percent of original size [2021-03-24 11:07:09,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 11:07:09,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:09,623 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 11:07:09,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588337111] [2021-03-24 11:07:09,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:09,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:09,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901266116] [2021-03-24 11:07:09,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:09,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:09,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:09,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:09,626 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 134 [2021-03-24 11:07:09,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 243 flow. Second operand has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:09,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:09,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 134 [2021-03-24 11:07:09,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:09,724 INFO L129 PetriNetUnfolder]: 67/173 cut-off events. [2021-03-24 11:07:09,724 INFO L130 PetriNetUnfolder]: For 1020/1039 co-relation queries the response was YES. [2021-03-24 11:07:09,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 173 events. 67/173 cut-off events. For 1020/1039 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 724 event pairs, 17 based on Foata normal form. 20/190 useless extension candidates. Maximal degree in co-relation 778. Up to 113 conditions per place. [2021-03-24 11:07:09,727 INFO L132 encePairwiseOnDemand]: 126/134 looper letters, 20 selfloop transitions, 10 changer transitions 6/50 dead transitions. [2021-03-24 11:07:09,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 399 flow [2021-03-24 11:07:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:07:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:07:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 834 transitions. [2021-03-24 11:07:09,731 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7779850746268657 [2021-03-24 11:07:09,731 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 834 transitions. [2021-03-24 11:07:09,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 834 transitions. [2021-03-24 11:07:09,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:09,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 834 transitions. [2021-03-24 11:07:09,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 11:07:09,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:09,736 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:09,736 INFO L185 Difference]: Start difference. First operand has 53 places, 39 transitions, 243 flow. Second operand 8 states and 834 transitions. [2021-03-24 11:07:09,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 399 flow [2021-03-24 11:07:09,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 384 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:09,741 INFO L241 Difference]: Finished difference. Result has 59 places, 42 transitions, 288 flow [2021-03-24 11:07:09,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2021-03-24 11:07:09,741 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2021-03-24 11:07:09,741 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 288 flow [2021-03-24 11:07:09,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:09,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:07:09,742 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,742 INFO L82 PathProgramCache]: Analyzing trace with hash -402788247, now seen corresponding path program 1 times [2021-03-24 11:07:09,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962500550] [2021-03-24 11:07:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:09,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:09,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:09,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:09,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:09,851 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-24 11:07:09,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-24 11:07:09,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:09,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:09,868 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 11:07:09,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962500550] [2021-03-24 11:07:09,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:09,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:09,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403464951] [2021-03-24 11:07:09,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:09,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:09,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:09,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:09,871 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 134 [2021-03-24 11:07:09,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 95.85714285714286) internal successors, (671), 7 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 11:07:09,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:09,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 134 [2021-03-24 11:07:09,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:09,980 INFO L129 PetriNetUnfolder]: 56/163 cut-off events. [2021-03-24 11:07:09,980 INFO L130 PetriNetUnfolder]: For 1132/1156 co-relation queries the response was YES. [2021-03-24 11:07:09,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 163 events. 56/163 cut-off events. For 1132/1156 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 719 event pairs, 16 based on Foata normal form. 35/195 useless extension candidates. Maximal degree in co-relation 749. Up to 99 conditions per place. [2021-03-24 11:07:09,981 INFO L132 encePairwiseOnDemand]: 127/134 looper letters, 14 selfloop transitions, 12 changer transitions 6/47 dead transitions. [2021-03-24 11:07:09,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 47 transitions, 392 flow [2021-03-24 11:07:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 688 transitions. [2021-03-24 11:07:09,984 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7334754797441365 [2021-03-24 11:07:09,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 688 transitions. [2021-03-24 11:07:09,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 688 transitions. [2021-03-24 11:07:09,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:09,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 688 transitions. [2021-03-24 11:07:09,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 11:07:09,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 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 11:07:09,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 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 11:07:09,988 INFO L185 Difference]: Start difference. First operand has 59 places, 42 transitions, 288 flow. Second operand 7 states and 688 transitions. [2021-03-24 11:07:09,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 47 transitions, 392 flow [2021-03-24 11:07:09,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 362 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-03-24 11:07:09,991 INFO L241 Difference]: Finished difference. Result has 59 places, 41 transitions, 281 flow [2021-03-24 11:07:09,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=281, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2021-03-24 11:07:09,992 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2021-03-24 11:07:09,992 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 281 flow [2021-03-24 11:07:09,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 95.85714285714286) internal successors, (671), 7 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 11:07:09,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:09,992 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:09,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:07:09,993 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:09,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1332943087, now seen corresponding path program 1 times [2021-03-24 11:07:09,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:09,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609581017] [2021-03-24 11:07:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:10,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:10,087 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-24 11:07:10,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-24 11:07:10,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:10,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,111 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 11:07:10,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609581017] [2021-03-24 11:07:10,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:10,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318627117] [2021-03-24 11:07:10,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:10,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:10,113 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 134 [2021-03-24 11:07:10,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 281 flow. Second operand has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 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 11:07:10,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 134 [2021-03-24 11:07:10,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,248 INFO L129 PetriNetUnfolder]: 54/151 cut-off events. [2021-03-24 11:07:10,248 INFO L130 PetriNetUnfolder]: For 901/925 co-relation queries the response was YES. [2021-03-24 11:07:10,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 151 events. 54/151 cut-off events. For 901/925 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 618 event pairs, 14 based on Foata normal form. 19/167 useless extension candidates. Maximal degree in co-relation 718. Up to 94 conditions per place. [2021-03-24 11:07:10,250 INFO L132 encePairwiseOnDemand]: 125/134 looper letters, 19 selfloop transitions, 11 changer transitions 6/51 dead transitions. [2021-03-24 11:07:10,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 449 flow [2021-03-24 11:07:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:07:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:07:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 809 transitions. [2021-03-24 11:07:10,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7546641791044776 [2021-03-24 11:07:10,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 809 transitions. [2021-03-24 11:07:10,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 809 transitions. [2021-03-24 11:07:10,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 809 transitions. [2021-03-24 11:07:10,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.125) internal successors, (809), 8 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 11:07:10,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:10,257 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:10,257 INFO L185 Difference]: Start difference. First operand has 59 places, 41 transitions, 281 flow. Second operand 8 states and 809 transitions. [2021-03-24 11:07:10,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 51 transitions, 449 flow [2021-03-24 11:07:10,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 417 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 11:07:10,261 INFO L241 Difference]: Finished difference. Result has 61 places, 42 transitions, 301 flow [2021-03-24 11:07:10,262 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=301, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2021-03-24 11:07:10,262 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2021-03-24 11:07:10,262 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 301 flow [2021-03-24 11:07:10,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 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 11:07:10,262 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,262 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:07:10,263 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,263 INFO L82 PathProgramCache]: Analyzing trace with hash 362924003, now seen corresponding path program 2 times [2021-03-24 11:07:10,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717417027] [2021-03-24 11:07:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:10,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:10,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:10,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 11:07:10,363 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-03-24 11:07:10,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-24 11:07:10,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,387 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 11:07:10,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717417027] [2021-03-24 11:07:10,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 11:07:10,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373525976] [2021-03-24 11:07:10,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 11:07:10,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 11:07:10,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-24 11:07:10,390 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 134 [2021-03-24 11:07:10,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 11:07:10,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 134 [2021-03-24 11:07:10,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,532 INFO L129 PetriNetUnfolder]: 53/151 cut-off events. [2021-03-24 11:07:10,533 INFO L130 PetriNetUnfolder]: For 987/1011 co-relation queries the response was YES. [2021-03-24 11:07:10,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 151 events. 53/151 cut-off events. For 987/1011 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 623 event pairs, 14 based on Foata normal form. 19/167 useless extension candidates. Maximal degree in co-relation 765. Up to 93 conditions per place. [2021-03-24 11:07:10,534 INFO L132 encePairwiseOnDemand]: 126/134 looper letters, 19 selfloop transitions, 13 changer transitions 6/53 dead transitions. [2021-03-24 11:07:10,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 503 flow [2021-03-24 11:07:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:07:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:07:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 784 transitions. [2021-03-24 11:07:10,537 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2021-03-24 11:07:10,537 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 784 transitions. [2021-03-24 11:07:10,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 784 transitions. [2021-03-24 11:07:10,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 784 transitions. [2021-03-24 11:07:10,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 11:07:10,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:10,540 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 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 11:07:10,540 INFO L185 Difference]: Start difference. First operand has 61 places, 42 transitions, 301 flow. Second operand 8 states and 784 transitions. [2021-03-24 11:07:10,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 503 flow [2021-03-24 11:07:10,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 475 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-24 11:07:10,544 INFO L241 Difference]: Finished difference. Result has 64 places, 45 transitions, 345 flow [2021-03-24 11:07:10,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=345, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2021-03-24 11:07:10,545 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2021-03-24 11:07:10,545 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 345 flow [2021-03-24 11:07:10,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 11:07:10,545 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,545 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:07:10,546 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,546 INFO L82 PathProgramCache]: Analyzing trace with hash 398442563, now seen corresponding path program 3 times [2021-03-24 11:07:10,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637995548] [2021-03-24 11:07:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:10,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 11:07:10,607 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-03-24 11:07:10,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-24 11:07:10,626 INFO L142 QuantifierPusher]: treesize reduction 10, result has 84.1 percent of original size [2021-03-24 11:07:10,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-24 11:07:10,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,652 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 11:07:10,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637995548] [2021-03-24 11:07:10,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:10,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871785472] [2021-03-24 11:07:10,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:07:10,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:07:10,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:07:10,656 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 134 [2021-03-24 11:07:10,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 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 11:07:10,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 134 [2021-03-24 11:07:10,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,798 INFO L129 PetriNetUnfolder]: 48/157 cut-off events. [2021-03-24 11:07:10,799 INFO L130 PetriNetUnfolder]: For 1474/1498 co-relation queries the response was YES. [2021-03-24 11:07:10,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 157 events. 48/157 cut-off events. For 1474/1498 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 737 event pairs, 6 based on Foata normal form. 30/184 useless extension candidates. Maximal degree in co-relation 862. Up to 66 conditions per place. [2021-03-24 11:07:10,800 INFO L132 encePairwiseOnDemand]: 126/134 looper letters, 13 selfloop transitions, 18 changer transitions 9/55 dead transitions. [2021-03-24 11:07:10,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 567 flow [2021-03-24 11:07:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:07:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:07:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 907 transitions. [2021-03-24 11:07:10,803 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7520729684908789 [2021-03-24 11:07:10,803 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 907 transitions. [2021-03-24 11:07:10,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 907 transitions. [2021-03-24 11:07:10,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 907 transitions. [2021-03-24 11:07:10,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.77777777777777) internal successors, (907), 9 states have internal predecessors, (907), 0 states have call successors, (0), 0 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 11:07:10,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 11:07:10,808 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 11:07:10,808 INFO L185 Difference]: Start difference. First operand has 64 places, 45 transitions, 345 flow. Second operand 9 states and 907 transitions. [2021-03-24 11:07:10,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 567 flow [2021-03-24 11:07:10,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 524 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-03-24 11:07:10,813 INFO L241 Difference]: Finished difference. Result has 69 places, 44 transitions, 388 flow [2021-03-24 11:07:10,813 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=388, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2021-03-24 11:07:10,814 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2021-03-24 11:07:10,814 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 388 flow [2021-03-24 11:07:10,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 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 11:07:10,814 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,814 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:10,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 11:07:10,814 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,815 INFO L82 PathProgramCache]: Analyzing trace with hash -419928270, now seen corresponding path program 1 times [2021-03-24 11:07:10,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941511286] [2021-03-24 11:07:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,871 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:10,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:10,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,877 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 11:07:10,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941511286] [2021-03-24 11:07:10,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:10,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:10,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431269103] [2021-03-24 11:07:10,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:10,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:10,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:10,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:10,880 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 134 [2021-03-24 11:07:10,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 11:07:10,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:10,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 134 [2021-03-24 11:07:10,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:10,918 INFO L129 PetriNetUnfolder]: 44/147 cut-off events. [2021-03-24 11:07:10,919 INFO L130 PetriNetUnfolder]: For 963/1010 co-relation queries the response was YES. [2021-03-24 11:07:10,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 147 events. 44/147 cut-off events. For 963/1010 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 685 event pairs, 11 based on Foata normal form. 41/166 useless extension candidates. Maximal degree in co-relation 609. Up to 67 conditions per place. [2021-03-24 11:07:10,920 INFO L132 encePairwiseOnDemand]: 129/134 looper letters, 6 selfloop transitions, 6 changer transitions 2/40 dead transitions. [2021-03-24 11:07:10,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 40 transitions, 312 flow [2021-03-24 11:07:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 566 transitions. [2021-03-24 11:07:10,922 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.844776119402985 [2021-03-24 11:07:10,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 566 transitions. [2021-03-24 11:07:10,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 566 transitions. [2021-03-24 11:07:10,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:10,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 566 transitions. [2021-03-24 11:07:10,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 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 11:07:10,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 11:07:10,925 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 11:07:10,925 INFO L185 Difference]: Start difference. First operand has 69 places, 44 transitions, 388 flow. Second operand 5 states and 566 transitions. [2021-03-24 11:07:10,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 40 transitions, 312 flow [2021-03-24 11:07:10,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 40 transitions, 251 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-03-24 11:07:10,928 INFO L241 Difference]: Finished difference. Result has 58 places, 37 transitions, 248 flow [2021-03-24 11:07:10,928 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2021-03-24 11:07:10,928 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2021-03-24 11:07:10,928 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 248 flow [2021-03-24 11:07:10,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 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 11:07:10,929 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:10,929 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 11:07:10,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 11:07:10,929 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1128338587, now seen corresponding path program 1 times [2021-03-24 11:07:10,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:10,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245227046] [2021-03-24 11:07:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:10,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:10,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:10,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:10,995 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:10,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:11,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:11,004 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 11:07:11,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245227046] [2021-03-24 11:07:11,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:11,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:11,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542504638] [2021-03-24 11:07:11,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:11,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:11,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 134 [2021-03-24 11:07:11,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 248 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 11:07:11,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:11,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 134 [2021-03-24 11:07:11,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:11,055 INFO L129 PetriNetUnfolder]: 21/96 cut-off events. [2021-03-24 11:07:11,055 INFO L130 PetriNetUnfolder]: For 443/548 co-relation queries the response was YES. [2021-03-24 11:07:11,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 96 events. 21/96 cut-off events. For 443/548 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 402 event pairs, 0 based on Foata normal form. 56/142 useless extension candidates. Maximal degree in co-relation 341. Up to 29 conditions per place. [2021-03-24 11:07:11,056 INFO L132 encePairwiseOnDemand]: 129/134 looper letters, 4 selfloop transitions, 9 changer transitions 8/42 dead transitions. [2021-03-24 11:07:11,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 42 transitions, 296 flow [2021-03-24 11:07:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 788 transitions. [2021-03-24 11:07:11,058 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8400852878464818 [2021-03-24 11:07:11,058 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 788 transitions. [2021-03-24 11:07:11,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 788 transitions. [2021-03-24 11:07:11,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:11,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 788 transitions. [2021-03-24 11:07:11,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.57142857142857) internal successors, (788), 7 states have internal predecessors, (788), 0 states have call successors, (0), 0 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 11:07:11,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 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 11:07:11,062 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 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 11:07:11,062 INFO L185 Difference]: Start difference. First operand has 58 places, 37 transitions, 248 flow. Second operand 7 states and 788 transitions. [2021-03-24 11:07:11,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 42 transitions, 296 flow [2021-03-24 11:07:11,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 262 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-03-24 11:07:11,065 INFO L241 Difference]: Finished difference. Result has 63 places, 33 transitions, 218 flow [2021-03-24 11:07:11,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=63, PETRI_TRANSITIONS=33} [2021-03-24 11:07:11,065 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2021-03-24 11:07:11,065 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 33 transitions, 218 flow [2021-03-24 11:07:11,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 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 11:07:11,065 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:11,065 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 11:07:11,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 11:07:11,066 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1132742651, now seen corresponding path program 1 times [2021-03-24 11:07:11,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:11,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683418879] [2021-03-24 11:07:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:11,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:11,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:07:11,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:11,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-03-24 11:07:11,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 11:07:11,171 INFO L142 QuantifierPusher]: treesize reduction 34, result has 70.9 percent of original size [2021-03-24 11:07:11,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-24 11:07:11,207 INFO L142 QuantifierPusher]: treesize reduction 34, result has 71.7 percent of original size [2021-03-24 11:07:11,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-24 11:07:11,248 INFO L142 QuantifierPusher]: treesize reduction 37, result has 50.0 percent of original size [2021-03-24 11:07:11,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-24 11:07:11,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 11:07:11,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:11,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:11,293 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 11:07:11,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683418879] [2021-03-24 11:07:11,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:11,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 11:07:11,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706840628] [2021-03-24 11:07:11,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 11:07:11,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:11,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 11:07:11,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-24 11:07:11,297 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 134 [2021-03-24 11:07:11,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 33 transitions, 218 flow. Second operand has 10 states, 10 states have (on average 92.9) internal successors, (929), 10 states have internal predecessors, (929), 0 states have call successors, (0), 0 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 11:07:11,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:11,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 134 [2021-03-24 11:07:11,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:11,421 INFO L129 PetriNetUnfolder]: 3/57 cut-off events. [2021-03-24 11:07:11,421 INFO L130 PetriNetUnfolder]: For 377/391 co-relation queries the response was YES. [2021-03-24 11:07:11,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 57 events. 3/57 cut-off events. For 377/391 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 160 event pairs, 0 based on Foata normal form. 11/68 useless extension candidates. Maximal degree in co-relation 211. Up to 17 conditions per place. [2021-03-24 11:07:11,422 INFO L132 encePairwiseOnDemand]: 126/134 looper letters, 8 selfloop transitions, 6 changer transitions 9/38 dead transitions. [2021-03-24 11:07:11,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 38 transitions, 298 flow [2021-03-24 11:07:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:07:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:07:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 848 transitions. [2021-03-24 11:07:11,424 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.703150912106136 [2021-03-24 11:07:11,424 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 848 transitions. [2021-03-24 11:07:11,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 848 transitions. [2021-03-24 11:07:11,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:11,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 848 transitions. [2021-03-24 11:07:11,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.22222222222223) internal successors, (848), 9 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 11:07:11,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 11:07:11,429 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 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 11:07:11,429 INFO L185 Difference]: Start difference. First operand has 63 places, 33 transitions, 218 flow. Second operand 9 states and 848 transitions. [2021-03-24 11:07:11,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 38 transitions, 298 flow [2021-03-24 11:07:11,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 38 transitions, 231 flow, removed 16 selfloop flow, removed 13 redundant places. [2021-03-24 11:07:11,432 INFO L241 Difference]: Finished difference. Result has 57 places, 26 transitions, 135 flow [2021-03-24 11:07:11,432 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=135, PETRI_PLACES=57, PETRI_TRANSITIONS=26} [2021-03-24 11:07:11,433 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2021-03-24 11:07:11,433 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 26 transitions, 135 flow [2021-03-24 11:07:11,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 92.9) internal successors, (929), 10 states have internal predecessors, (929), 0 states have call successors, (0), 0 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 11:07:11,433 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:11,433 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 11:07:11,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 11:07:11,433 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:11,434 INFO L82 PathProgramCache]: Analyzing trace with hash -448654227, now seen corresponding path program 2 times [2021-03-24 11:07:11,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:11,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280273927] [2021-03-24 11:07:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:07:11,461 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:07:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 11:07:11,494 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 11:07:11,529 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 11:07:11,530 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 11:07:11,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 11:07:11,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:07:11 BasicIcfg [2021-03-24 11:07:11,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:07:11,622 INFO L168 Benchmark]: Toolchain (without parser) took 12267.42 ms. Allocated memory was 255.9 MB in the beginning and 520.1 MB in the end (delta: 264.2 MB). Free memory was 235.5 MB in the beginning and 491.2 MB in the end (delta: -255.7 MB). Peak memory consumption was 304.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:11,622 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:07:11,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.82 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.1 MB in the beginning and 319.4 MB in the end (delta: -84.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:11,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.94 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 316.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:11,622 INFO L168 Benchmark]: Boogie Preprocessor took 51.52 ms. Allocated memory is still 358.6 MB. Free memory was 316.8 MB in the beginning and 314.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:11,623 INFO L168 Benchmark]: RCFGBuilder took 1573.81 ms. Allocated memory is still 358.6 MB. Free memory was 314.7 MB in the beginning and 277.3 MB in the end (delta: 37.3 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:11,623 INFO L168 Benchmark]: TraceAbstraction took 9916.33 ms. Allocated memory was 358.6 MB in the beginning and 520.1 MB in the end (delta: 161.5 MB). Free memory was 277.3 MB in the beginning and 491.2 MB in the end (delta: -213.9 MB). Peak memory consumption was 245.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:11,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 646.82 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.1 MB in the beginning and 319.4 MB in the end (delta: -84.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 73.94 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 316.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 51.52 ms. Allocated memory is still 358.6 MB. Free memory was 316.8 MB in the beginning and 314.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1573.81 ms. Allocated memory is still 358.6 MB. Free memory was 314.7 MB in the beginning and 277.3 MB in the end (delta: 37.3 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9916.33 ms. Allocated memory was 358.6 MB in the beginning and 520.1 MB in the end (delta: 161.5 MB). Free memory was 277.3 MB in the beginning and 491.2 MB in the end (delta: -213.9 MB). Peak memory consumption was 245.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6375.0ms, 82 PlacesBefore, 35 PlacesAfterwards, 77 TransitionsBefore, 29 TransitionsAfterwards, 926 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1628 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 839, positive: 774, positive conditional: 0, positive unconditional: 774, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 444, positive: 422, positive conditional: 0, positive unconditional: 422, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 444, positive: 422, positive conditional: 0, positive unconditional: 422, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 839, positive: 352, positive conditional: 0, positive unconditional: 352, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 444, unknown conditional: 0, unknown unconditional: 444] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; [L714] 0 int y = 0; [L715] 0 _Bool y$flush_delayed; [L716] 0 int y$mem_tmp; [L717] 0 _Bool y$r_buff0_thd0; [L718] 0 _Bool y$r_buff0_thd1; [L719] 0 _Bool y$r_buff0_thd2; [L720] 0 _Bool y$r_buff1_thd0; [L721] 0 _Bool y$r_buff1_thd1; [L722] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L723] 0 _Bool y$read_delayed; [L724] 0 int *y$read_delayed_var; [L725] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L726] 0 _Bool y$w_buff0_used; [L727] 0 int y$w_buff1; [L728] 0 _Bool y$w_buff1_used; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2477; [L791] FCALL, FORK 0 pthread_create(&t2477, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L745] 1 x = 1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L792] 0 pthread_t t2478; [L793] FCALL, FORK 0 pthread_create(&t2478, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L762] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L748] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L748] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L749] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L749] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L750] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L751] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L752] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L757] 1 return 0; [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L800] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L800] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L801] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L802] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L803] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 y$flush_delayed = weak$$choice2 [L809] 0 y$mem_tmp = y [L810] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L810] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L818] 0 y = y$flush_delayed ? y$mem_tmp : y [L819] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 9749.8ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1505.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6429.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 78 SDtfs, 73 SDslu, 88 SDs, 0 SdLazy, 470 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 504.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 606.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=10, InterpolantAutomatonStates: 91, 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: 38.2ms SsaConstructionTime, 448.7ms SatisfiabilityAnalysisTime, 1081.9ms InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 1231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...