/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:49:55,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:49:55,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:49:55,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:49:55,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:49:55,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:49:55,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:49:55,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:49:55,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:49:55,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:49:55,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:49:55,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:49:55,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:49:55,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:49:55,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:49:55,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:49:55,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:49:55,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:49:55,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:49:55,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:49:55,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:49:55,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:49:55,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:49:55,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:49:55,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:49:55,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:49:55,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:49:55,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:49:55,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:49:55,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:49:55,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:49:55,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:49:55,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:49:55,853 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:49:55,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:49:55,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:49:55,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:49:55,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:49:55,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:49:55,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:49:55,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:49:55,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:49:55,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:49:55,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:49:55,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:49:55,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:49:55,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:49:55,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:49:55,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:49:55,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:49:55,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:49:55,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:49:55,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:49:55,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:49:55,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:49:55,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:49:55,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:49:55,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:49:56,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:49:56,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:49:56,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:49:56,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:49:56,187 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:49:56,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-03-24 19:49:56,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8a2e6da/87f09b8897214c6dace11e71fbee6e4d/FLAG1b4c2408b [2021-03-24 19:49:56,823 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:49:56,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-03-24 19:49:56,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8a2e6da/87f09b8897214c6dace11e71fbee6e4d/FLAG1b4c2408b [2021-03-24 19:49:57,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b8a2e6da/87f09b8897214c6dace11e71fbee6e4d [2021-03-24 19:49:57,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:49:57,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:49:57,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:49:57,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:49:57,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:49:57,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f9e182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57, skipping insertion in model container [2021-03-24 19:49:57,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:49:57,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:49:57,410 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/safe004_tso.opt.i[949,962] [2021-03-24 19:49:57,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:49:57,522 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:49:57,532 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/safe004_tso.opt.i[949,962] [2021-03-24 19:49:57,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:49:57,609 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:49:57,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57 WrapperNode [2021-03-24 19:49:57,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:49:57,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:49:57,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:49:57,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:49:57,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:49:57,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:49:57,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:49:57,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:49:57,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... [2021-03-24 19:49:57,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:49:57,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:49:57,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:49:57,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:49:57,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:49:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:49:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:49:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:49:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:49:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:49:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:49:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:49:57,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:49:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:49:57,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:49:57,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:49:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:49:57,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:49:57,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:49:57,731 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:49:58,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:49:58,130 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:49:58,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:49:58 BoogieIcfgContainer [2021-03-24 19:49:58,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:49:58,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:49:58,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:49:58,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:49:58,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:49:57" (1/3) ... [2021-03-24 19:49:58,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79da3630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:49:58, skipping insertion in model container [2021-03-24 19:49:58,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:49:57" (2/3) ... [2021-03-24 19:49:58,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79da3630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:49:58, skipping insertion in model container [2021-03-24 19:49:58,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:49:58" (3/3) ... [2021-03-24 19:49:58,138 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2021-03-24 19:49:58,143 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:49:58,148 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:49:58,148 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:49:58,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,185 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,194 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,201 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,206 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:49:58,211 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:49:58,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:49:58,255 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:49:58,255 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:49:58,255 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:49:58,255 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:49:58,256 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:49:58,256 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:49:58,256 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:49:58,256 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:49:58,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 19:49:58,314 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-24 19:49:58,314 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:49:58,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:49:58,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 19:49:58,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-24 19:49:58,332 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:49:58,349 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 19:49:58,352 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 19:49:58,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-24 19:49:58,377 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-24 19:49:58,378 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:49:58,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:49:58,380 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:50:00,095 INFO L154 LiptonReduction]: Checked pairs total: 996 [2021-03-24 19:50:00,096 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-24 19:50:00,098 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1767 [2021-03-24 19:50:00,108 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 19:50:00,108 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:00,108 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:00,109 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:00,109 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1399899973, now seen corresponding path program 1 times [2021-03-24 19:50:00,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:00,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545840843] [2021-03-24 19:50:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:00,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:00,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:00,343 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:50:00,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:50:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:00,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545840843] [2021-03-24 19:50:00,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:00,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:00,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241461861] [2021-03-24 19:50:00,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:00,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:00,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:00,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:00,398 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 111 [2021-03-24 19:50:00,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:00,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 111 [2021-03-24 19:50:00,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:00,444 INFO L129 PetriNetUnfolder]: 38/114 cut-off events. [2021-03-24 19:50:00,445 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:00,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 114 events. 38/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 433 event pairs, 16 based on Foata normal form. 11/118 useless extension candidates. Maximal degree in co-relation 192. Up to 35 conditions per place. [2021-03-24 19:50:00,447 INFO L132 encePairwiseOnDemand]: 104/111 looper letters, 11 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2021-03-24 19:50:00,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 103 flow [2021-03-24 19:50:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:50:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:50:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-24 19:50:00,458 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8175675675675675 [2021-03-24 19:50:00,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-24 19:50:00,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-24 19:50:00,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:00,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-24 19:50:00,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,472 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 363 transitions. [2021-03-24 19:50:00,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 103 flow [2021-03-24 19:50:00,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:50:00,477 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 94 flow [2021-03-24 19:50:00,478 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-24 19:50:00,479 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-24 19:50:00,479 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 94 flow [2021-03-24 19:50:00,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,480 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:00,480 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:00,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:50:00,480 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:00,481 INFO L82 PathProgramCache]: Analyzing trace with hash -288169063, now seen corresponding path program 1 times [2021-03-24 19:50:00,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:00,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165823725] [2021-03-24 19:50:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:00,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:00,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:00,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:00,549 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:50:00,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:50:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:00,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165823725] [2021-03-24 19:50:00,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:00,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:50:00,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846549286] [2021-03-24 19:50:00,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:50:00,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:50:00,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:50:00,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 111 [2021-03-24 19:50:00,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:00,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 111 [2021-03-24 19:50:00,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:00,644 INFO L129 PetriNetUnfolder]: 34/116 cut-off events. [2021-03-24 19:50:00,645 INFO L130 PetriNetUnfolder]: For 72/213 co-relation queries the response was YES. [2021-03-24 19:50:00,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 116 events. 34/116 cut-off events. For 72/213 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 471 event pairs, 10 based on Foata normal form. 8/119 useless extension candidates. Maximal degree in co-relation 298. Up to 45 conditions per place. [2021-03-24 19:50:00,648 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 7 selfloop transitions, 9 changer transitions 11/40 dead transitions. [2021-03-24 19:50:00,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 218 flow [2021-03-24 19:50:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:50:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:50:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2021-03-24 19:50:00,653 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8144144144144144 [2021-03-24 19:50:00,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2021-03-24 19:50:00,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2021-03-24 19:50:00,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:00,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2021-03-24 19:50:00,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,660 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 94 flow. Second operand 5 states and 452 transitions. [2021-03-24 19:50:00,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 218 flow [2021-03-24 19:50:00,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:50:00,664 INFO L241 Difference]: Finished difference. Result has 40 places, 27 transitions, 128 flow [2021-03-24 19:50:00,664 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2021-03-24 19:50:00,664 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-24 19:50:00,665 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 128 flow [2021-03-24 19:50:00,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,665 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:00,665 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:00,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:50:00,665 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:00,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:00,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1201121619, now seen corresponding path program 1 times [2021-03-24 19:50:00,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:00,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084618233] [2021-03-24 19:50:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:00,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:00,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:00,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:00,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:00,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084618233] [2021-03-24 19:50:00,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:00,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:00,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972220187] [2021-03-24 19:50:00,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:00,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:00,765 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 111 [2021-03-24 19:50:00,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:00,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 111 [2021-03-24 19:50:00,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:00,809 INFO L129 PetriNetUnfolder]: 13/71 cut-off events. [2021-03-24 19:50:00,809 INFO L130 PetriNetUnfolder]: For 116/176 co-relation queries the response was YES. [2021-03-24 19:50:00,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 71 events. 13/71 cut-off events. For 116/176 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 246 event pairs, 8 based on Foata normal form. 5/69 useless extension candidates. Maximal degree in co-relation 182. Up to 21 conditions per place. [2021-03-24 19:50:00,812 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 1 changer transitions 8/30 dead transitions. [2021-03-24 19:50:00,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 170 flow [2021-03-24 19:50:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:50:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:50:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-03-24 19:50:00,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8504504504504504 [2021-03-24 19:50:00,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-03-24 19:50:00,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-03-24 19:50:00,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:00,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-03-24 19:50:00,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,823 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,823 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 128 flow. Second operand 5 states and 472 transitions. [2021-03-24 19:50:00,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 170 flow [2021-03-24 19:50:00,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 149 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-24 19:50:00,833 INFO L241 Difference]: Finished difference. Result has 43 places, 22 transitions, 87 flow [2021-03-24 19:50:00,833 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=22} [2021-03-24 19:50:00,833 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2021-03-24 19:50:00,833 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 22 transitions, 87 flow [2021-03-24 19:50:00,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,834 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:00,834 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:00,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:50:00,834 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:00,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash -363750647, now seen corresponding path program 1 times [2021-03-24 19:50:00,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:00,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320047226] [2021-03-24 19:50:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:00,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:00,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:00,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:00,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320047226] [2021-03-24 19:50:00,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:00,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:00,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952114001] [2021-03-24 19:50:00,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:00,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:00,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:00,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:00,921 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 111 [2021-03-24 19:50:00,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 22 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:00,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 111 [2021-03-24 19:50:00,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:00,954 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-24 19:50:00,954 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-24 19:50:00,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 32 events. 0/32 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-24 19:50:00,955 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 3 selfloop transitions, 4 changer transitions 3/25 dead transitions. [2021-03-24 19:50:00,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 25 transitions, 126 flow [2021-03-24 19:50:00,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:50:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:50:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-24 19:50:00,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8536036036036037 [2021-03-24 19:50:00,957 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-24 19:50:00,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-24 19:50:00,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:00,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-24 19:50:00,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,961 INFO L185 Difference]: Start difference. First operand has 43 places, 22 transitions, 87 flow. Second operand 4 states and 379 transitions. [2021-03-24 19:50:00,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 25 transitions, 126 flow [2021-03-24 19:50:00,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 25 transitions, 102 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-24 19:50:00,964 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 82 flow [2021-03-24 19:50:00,964 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2021-03-24 19:50:00,964 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2021-03-24 19:50:00,964 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 82 flow [2021-03-24 19:50:00,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:00,965 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:00,965 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:00,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:50:00,965 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1625516481, now seen corresponding path program 2 times [2021-03-24 19:50:00,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:00,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835512153] [2021-03-24 19:50:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:01,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,065 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-24 19:50:01,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:50:01,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:01,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835512153] [2021-03-24 19:50:01,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:01,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:50:01,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090406538] [2021-03-24 19:50:01,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:50:01,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:01,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:50:01,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:50:01,090 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 111 [2021-03-24 19:50:01,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:01,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 111 [2021-03-24 19:50:01,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:01,191 INFO L129 PetriNetUnfolder]: 51/119 cut-off events. [2021-03-24 19:50:01,191 INFO L130 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2021-03-24 19:50:01,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 119 events. 51/119 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 431 event pairs, 14 based on Foata normal form. 8/117 useless extension candidates. Maximal degree in co-relation 237. Up to 54 conditions per place. [2021-03-24 19:50:01,194 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 7 selfloop transitions, 5 changer transitions 11/37 dead transitions. [2021-03-24 19:50:01,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 158 flow [2021-03-24 19:50:01,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:50:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:50:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2021-03-24 19:50:01,197 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.797940797940798 [2021-03-24 19:50:01,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2021-03-24 19:50:01,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2021-03-24 19:50:01,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:01,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2021-03-24 19:50:01,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,202 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,202 INFO L185 Difference]: Start difference. First operand has 39 places, 22 transitions, 82 flow. Second operand 7 states and 620 transitions. [2021-03-24 19:50:01,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 158 flow [2021-03-24 19:50:01,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 143 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-24 19:50:01,206 INFO L241 Difference]: Finished difference. Result has 44 places, 24 transitions, 107 flow [2021-03-24 19:50:01,206 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2021-03-24 19:50:01,206 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-24 19:50:01,206 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 107 flow [2021-03-24 19:50:01,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,206 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:01,207 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:01,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:50:01,207 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:01,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1051436000, now seen corresponding path program 1 times [2021-03-24 19:50:01,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:01,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467338114] [2021-03-24 19:50:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:01,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,285 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:50:01,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:50:01,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:01,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467338114] [2021-03-24 19:50:01,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:01,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:50:01,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856225621] [2021-03-24 19:50:01,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:50:01,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:50:01,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:50:01,308 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 111 [2021-03-24 19:50:01,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:01,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 111 [2021-03-24 19:50:01,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:01,408 INFO L129 PetriNetUnfolder]: 22/70 cut-off events. [2021-03-24 19:50:01,408 INFO L130 PetriNetUnfolder]: For 75/107 co-relation queries the response was YES. [2021-03-24 19:50:01,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 70 events. 22/70 cut-off events. For 75/107 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 187 event pairs, 0 based on Foata normal form. 9/75 useless extension candidates. Maximal degree in co-relation 237. Up to 44 conditions per place. [2021-03-24 19:50:01,409 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 3 selfloop transitions, 7 changer transitions 15/39 dead transitions. [2021-03-24 19:50:01,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 246 flow [2021-03-24 19:50:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:50:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:50:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 707 transitions. [2021-03-24 19:50:01,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7961711711711712 [2021-03-24 19:50:01,412 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 707 transitions. [2021-03-24 19:50:01,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 707 transitions. [2021-03-24 19:50:01,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:01,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 707 transitions. [2021-03-24 19:50:01,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 111.0) internal successors, (999), 9 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,416 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 111.0) internal successors, (999), 9 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,416 INFO L185 Difference]: Start difference. First operand has 44 places, 24 transitions, 107 flow. Second operand 8 states and 707 transitions. [2021-03-24 19:50:01,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 246 flow [2021-03-24 19:50:01,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 225 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 19:50:01,418 INFO L241 Difference]: Finished difference. Result has 48 places, 24 transitions, 125 flow [2021-03-24 19:50:01,419 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=48, PETRI_TRANSITIONS=24} [2021-03-24 19:50:01,419 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2021-03-24 19:50:01,419 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 24 transitions, 125 flow [2021-03-24 19:50:01,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:01,419 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] [2021-03-24 19:50:01,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:50:01,420 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:01,420 INFO L82 PathProgramCache]: Analyzing trace with hash -674759262, now seen corresponding path program 1 times [2021-03-24 19:50:01,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:01,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949617174] [2021-03-24 19:50:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:01,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,488 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 19:50:01,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:50:01,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:01,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:01,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:01,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949617174] [2021-03-24 19:50:01,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:01,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:50:01,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225188046] [2021-03-24 19:50:01,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:50:01,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:01,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:50:01,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:50:01,509 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 111 [2021-03-24 19:50:01,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 24 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:01,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 111 [2021-03-24 19:50:01,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:01,573 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-24 19:50:01,574 INFO L130 PetriNetUnfolder]: For 70/84 co-relation queries the response was YES. [2021-03-24 19:50:01,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 28 events. 2/28 cut-off events. For 70/84 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 95. Up to 11 conditions per place. [2021-03-24 19:50:01,574 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-24 19:50:01,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 27 transitions, 181 flow [2021-03-24 19:50:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:50:01,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:50:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 781 transitions. [2021-03-24 19:50:01,576 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7817817817817818 [2021-03-24 19:50:01,577 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 781 transitions. [2021-03-24 19:50:01,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 781 transitions. [2021-03-24 19:50:01,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:01,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 781 transitions. [2021-03-24 19:50:01,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.77777777777777) internal successors, (781), 9 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,582 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,582 INFO L185 Difference]: Start difference. First operand has 48 places, 24 transitions, 125 flow. Second operand 9 states and 781 transitions. [2021-03-24 19:50:01,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 27 transitions, 181 flow [2021-03-24 19:50:01,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 27 transitions, 137 flow, removed 11 selfloop flow, removed 9 redundant places. [2021-03-24 19:50:01,583 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-03-24 19:50:01,583 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-03-24 19:50:01,583 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-24 19:50:01,583 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2021-03-24 19:50:01,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:50:01,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:50:01,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:50:01 BasicIcfg [2021-03-24 19:50:01,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:50:01,588 INFO L168 Benchmark]: Toolchain (without parser) took 4365.12 ms. Allocated memory is still 335.5 MB. Free memory was 298.8 MB in the beginning and 243.0 MB in the end (delta: 55.8 MB). Peak memory consumption was 58.6 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:01,588 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 335.5 MB. Free memory is still 317.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:50:01,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.48 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 297.7 MB in the end (delta: 982.6 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:01,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 335.5 MB. Free memory was 297.7 MB in the beginning and 295.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:01,589 INFO L168 Benchmark]: Boogie Preprocessor took 18.76 ms. Allocated memory is still 335.5 MB. Free memory was 295.6 MB in the beginning and 294.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:01,590 INFO L168 Benchmark]: RCFGBuilder took 468.75 ms. Allocated memory is still 335.5 MB. Free memory was 294.6 MB in the beginning and 270.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:01,590 INFO L168 Benchmark]: TraceAbstraction took 3454.10 ms. Allocated memory is still 335.5 MB. Free memory was 269.4 MB in the beginning and 243.0 MB in the end (delta: 26.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:01,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 335.5 MB. Free memory is still 317.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 385.48 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 297.7 MB in the end (delta: 982.6 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.80 ms. Allocated memory is still 335.5 MB. Free memory was 297.7 MB in the beginning and 295.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.76 ms. Allocated memory is still 335.5 MB. Free memory was 295.6 MB in the beginning and 294.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 468.75 ms. Allocated memory is still 335.5 MB. Free memory was 294.6 MB in the beginning and 270.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3454.10 ms. Allocated memory is still 335.5 MB. Free memory was 269.4 MB in the beginning and 243.0 MB in the end (delta: 26.4 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1744.1ms, 68 PlacesBefore, 32 PlacesAfterwards, 59 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 593, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 513, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 513, positive: 488, positive conditional: 0, positive unconditional: 488, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 513, positive: 482, positive conditional: 0, positive unconditional: 482, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 164, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 593, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 513, unknown conditional: 0, unknown unconditional: 513] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3333.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 604.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1847.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 44 SDslu, 46 SDs, 0 SdLazy, 118 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 143.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 260.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=2, InterpolantAutomatonStates: 42, 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: 25.6ms SsaConstructionTime, 160.7ms SatisfiabilityAnalysisTime, 518.6ms InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 472 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...