/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:31:06,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:31:06,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:31:06,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:31:06,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:31:06,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:31:06,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:31:06,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:31:06,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:31:06,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:31:06,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:31:06,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:31:06,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:31:06,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:31:06,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:31:06,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:31:06,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:31:06,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:31:06,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:31:06,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:31:06,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:31:06,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:31:06,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:31:06,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:31:06,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:31:06,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:31:06,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:31:06,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:31:06,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:31:06,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:31:06,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:31:06,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:31:06,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:31:06,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:31:06,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:31:06,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:31:06,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:31:06,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:31:06,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:31:06,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:31:06,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:31:06,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:31:06,818 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:31:06,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:31:06,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:31:06,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:31:06,820 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:31:06,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:31:06,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:31:06,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:31:06,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:31:06,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:31:06,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:31:06,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:31:06,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:31:06,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:31:06,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:31:06,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:31:06,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:31:06,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:31:06,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:31:06,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:31:06,823 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:31:06,824 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:31:06,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:31:07,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:31:07,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:31:07,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:31:07,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:31:07,084 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:31:07,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2021-06-10 12:31:07,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/945fe9a24/3550e3782a0145339f9ff2214d1335bb/FLAG3c8d39924 [2021-06-10 12:31:07,796 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:31:07,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2021-06-10 12:31:07,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/945fe9a24/3550e3782a0145339f9ff2214d1335bb/FLAG3c8d39924 [2021-06-10 12:31:07,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/945fe9a24/3550e3782a0145339f9ff2214d1335bb [2021-06-10 12:31:07,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:31:07,916 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:31:07,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:31:07,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:31:07,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:31:07,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:31:07" (1/1) ... [2021-06-10 12:31:07,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20322ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:07, skipping insertion in model container [2021-06-10 12:31:07,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:31:07" (1/1) ... [2021-06-10 12:31:07,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:31:07,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:31:08,093 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/safe035_rmo.oepc.i[950,963] [2021-06-10 12:31:08,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:31:08,217 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:31:08,224 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/safe035_rmo.oepc.i[950,963] [2021-06-10 12:31:08,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:31:08,284 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:31:08,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08 WrapperNode [2021-06-10 12:31:08,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:31:08,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:31:08,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:31:08,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:31:08,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:31:08,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:31:08,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:31:08,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:31:08,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (1/1) ... [2021-06-10 12:31:08,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:31:08,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:31:08,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:31:08,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:31:08,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (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 [2021-06-10 12:31:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:31:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:31:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:31:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:31:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:31:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:31:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:31:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:31:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:31:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:31:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:31:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:31:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:31:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:31:08,385 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:31:08,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:31:08,699 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:31:08,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:31:08 BoogieIcfgContainer [2021-06-10 12:31:08,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:31:08,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:31:08,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:31:08,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:31:08,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:31:07" (1/3) ... [2021-06-10 12:31:08,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e61083a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:31:08, skipping insertion in model container [2021-06-10 12:31:08,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:31:08" (2/3) ... [2021-06-10 12:31:08,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e61083a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:31:08, skipping insertion in model container [2021-06-10 12:31:08,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:31:08" (3/3) ... [2021-06-10 12:31:08,705 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.oepc.i [2021-06-10 12:31:08,709 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:31:08,712 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:31:08,713 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:31:08,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,737 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,737 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,747 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:31:08,761 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:31:08,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:31:08,797 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:31:08,797 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:31:08,797 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:31:08,797 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:31:08,797 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:31:08,798 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:31:08,798 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:31:08,798 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:31:08,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:31:08,852 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 12:31:08,853 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:31:08,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 12:31:08,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:31:08,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 12:31:08,887 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-06-10 12:31:08,887 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:31:08,887 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:31:08,888 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:31:08,888 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:31:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:31:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1450915912, now seen corresponding path program 1 times [2021-06-10 12:31:08,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:31:08,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038929732] [2021-06-10 12:31:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:31:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:31:09,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:09,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:09,145 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:31:09,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:31:09,165 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:31:09,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:31:09,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:09,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:09,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:31:09,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038929732] [2021-06-10 12:31:09,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:31:09,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:31:09,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432351802] [2021-06-10 12:31:09,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:31:09,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:31:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:31:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:31:09,236 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:31:09,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:31:09,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:31:09,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:31:09,577 INFO L129 PetriNetUnfolder]: 183/464 cut-off events. [2021-06-10 12:31:09,582 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:31:09,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 464 events. 183/464 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2287 event pairs, 9 based on Foata normal form. 31/475 useless extension candidates. Maximal degree in co-relation 770. Up to 65 conditions per place. [2021-06-10 12:31:09,587 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 18 selfloop transitions, 5 changer transitions 42/109 dead transitions. [2021-06-10 12:31:09,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 109 transitions, 357 flow [2021-06-10 12:31:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:31:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:31:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 799 transitions. [2021-06-10 12:31:09,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8194871794871795 [2021-06-10 12:31:09,599 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 799 transitions. [2021-06-10 12:31:09,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 799 transitions. [2021-06-10 12:31:09,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:31:09,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 799 transitions. [2021-06-10 12:31:09,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.46153846153846) internal successors, (799), 13 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,613 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,615 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 799 transitions. [2021-06-10 12:31:09,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 109 transitions, 357 flow [2021-06-10 12:31:09,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:31:09,621 INFO L241 Difference]: Finished difference. Result has 90 places, 62 transitions, 196 flow [2021-06-10 12:31:09,622 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=196, PETRI_PLACES=90, PETRI_TRANSITIONS=62} [2021-06-10 12:31:09,623 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2021-06-10 12:31:09,623 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 62 transitions, 196 flow [2021-06-10 12:31:09,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,623 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:31:09,623 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:31:09,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:31:09,623 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:31:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:31:09,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1668452270, now seen corresponding path program 1 times [2021-06-10 12:31:09,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:31:09,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665153377] [2021-06-10 12:31:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:31:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:31:09,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:09,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:09,680 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:31:09,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:31:09,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:31:09,703 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:31:09,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:09,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:09,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:31:09,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665153377] [2021-06-10 12:31:09,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:31:09,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:31:09,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527700786] [2021-06-10 12:31:09,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:31:09,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:31:09,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:31:09,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:31:09,716 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:31:09,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 62 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:31:09,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:31:09,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:31:09,949 INFO L129 PetriNetUnfolder]: 396/879 cut-off events. [2021-06-10 12:31:09,950 INFO L130 PetriNetUnfolder]: For 290/313 co-relation queries the response was YES. [2021-06-10 12:31:09,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 879 events. 396/879 cut-off events. For 290/313 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5593 event pairs, 4 based on Foata normal form. 10/772 useless extension candidates. Maximal degree in co-relation 1756. Up to 257 conditions per place. [2021-06-10 12:31:09,956 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 21 selfloop transitions, 15 changer transitions 5/92 dead transitions. [2021-06-10 12:31:09,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 338 flow [2021-06-10 12:31:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:31:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:31:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-06-10 12:31:09,958 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-06-10 12:31:09,958 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-06-10 12:31:09,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-06-10 12:31:09,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:31:09,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-06-10 12:31:09,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,965 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,965 INFO L185 Difference]: Start difference. First operand has 90 places, 62 transitions, 196 flow. Second operand 10 states and 653 transitions. [2021-06-10 12:31:09,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 338 flow [2021-06-10 12:31:09,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 318 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-10 12:31:09,972 INFO L241 Difference]: Finished difference. Result has 92 places, 75 transitions, 285 flow [2021-06-10 12:31:09,972 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2021-06-10 12:31:09,972 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 23 predicate places. [2021-06-10 12:31:09,972 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 285 flow [2021-06-10 12:31:09,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:09,973 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:31:09,973 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:31:09,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:31:09,973 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:31:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:31:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash -402402967, now seen corresponding path program 1 times [2021-06-10 12:31:09,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:31:09,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18442335] [2021-06-10 12:31:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:31:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:31:10,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:10,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:10,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:10,074 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:31:10,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:31:10,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:31:10,099 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:31:10,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:10,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:31:10,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18442335] [2021-06-10 12:31:10,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:31:10,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:31:10,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704318944] [2021-06-10 12:31:10,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:31:10,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:31:10,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:31:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:31:10,114 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:31:10,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:31:10,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:31:10,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:31:10,351 INFO L129 PetriNetUnfolder]: 376/867 cut-off events. [2021-06-10 12:31:10,352 INFO L130 PetriNetUnfolder]: For 2243/2673 co-relation queries the response was YES. [2021-06-10 12:31:10,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3135 conditions, 867 events. 376/867 cut-off events. For 2243/2673 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5680 event pairs, 0 based on Foata normal form. 95/876 useless extension candidates. Maximal degree in co-relation 3090. Up to 403 conditions per place. [2021-06-10 12:31:10,357 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 20 selfloop transitions, 28 changer transitions 11/110 dead transitions. [2021-06-10 12:31:10,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 110 transitions, 627 flow [2021-06-10 12:31:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:31:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:31:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 848 transitions. [2021-06-10 12:31:10,359 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8697435897435898 [2021-06-10 12:31:10,359 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 848 transitions. [2021-06-10 12:31:10,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 848 transitions. [2021-06-10 12:31:10,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:31:10,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 848 transitions. [2021-06-10 12:31:10,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.23076923076923) internal successors, (848), 13 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,362 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,363 INFO L185 Difference]: Start difference. First operand has 92 places, 75 transitions, 285 flow. Second operand 13 states and 848 transitions. [2021-06-10 12:31:10,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 110 transitions, 627 flow [2021-06-10 12:31:10,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 619 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-06-10 12:31:10,367 INFO L241 Difference]: Finished difference. Result has 106 places, 92 transitions, 503 flow [2021-06-10 12:31:10,368 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=503, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2021-06-10 12:31:10,368 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 37 predicate places. [2021-06-10 12:31:10,368 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 503 flow [2021-06-10 12:31:10,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,368 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:31:10,368 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:31:10,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:31:10,368 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:31:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:31:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1747438762, now seen corresponding path program 1 times [2021-06-10 12:31:10,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:31:10,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850339567] [2021-06-10 12:31:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:31:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:31:10,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:10,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:10,399 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:31:10,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:31:10,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:10,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:10,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:31:10,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850339567] [2021-06-10 12:31:10,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:31:10,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:31:10,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85606165] [2021-06-10 12:31:10,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:31:10,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:31:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:31:10,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:31:10,429 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 75 [2021-06-10 12:31:10,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 503 flow. Second operand has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:31:10,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 75 [2021-06-10 12:31:10,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:31:10,587 INFO L129 PetriNetUnfolder]: 257/1196 cut-off events. [2021-06-10 12:31:10,588 INFO L130 PetriNetUnfolder]: For 3286/3559 co-relation queries the response was YES. [2021-06-10 12:31:10,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4047 conditions, 1196 events. 257/1196 cut-off events. For 3286/3559 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11481 event pairs, 12 based on Foata normal form. 14/1153 useless extension candidates. Maximal degree in co-relation 3997. Up to 313 conditions per place. [2021-06-10 12:31:10,597 INFO L132 encePairwiseOnDemand]: 69/75 looper letters, 14 selfloop transitions, 3 changer transitions 7/103 dead transitions. [2021-06-10 12:31:10,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 604 flow [2021-06-10 12:31:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 12:31:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 12:31:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 382 transitions. [2021-06-10 12:31:10,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2021-06-10 12:31:10,599 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 382 transitions. [2021-06-10 12:31:10,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 382 transitions. [2021-06-10 12:31:10,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:31:10,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 382 transitions. [2021-06-10 12:31:10,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,601 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,601 INFO L185 Difference]: Start difference. First operand has 106 places, 92 transitions, 503 flow. Second operand 6 states and 382 transitions. [2021-06-10 12:31:10,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 604 flow [2021-06-10 12:31:10,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 544 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-06-10 12:31:10,631 INFO L241 Difference]: Finished difference. Result has 111 places, 93 transitions, 466 flow [2021-06-10 12:31:10,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2021-06-10 12:31:10,632 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 42 predicate places. [2021-06-10 12:31:10,632 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 466 flow [2021-06-10 12:31:10,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,632 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:31:10,632 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:31:10,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:31:10,633 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:31:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:31:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 55829768, now seen corresponding path program 2 times [2021-06-10 12:31:10,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:31:10,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812201225] [2021-06-10 12:31:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:31:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:31:10,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:10,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:10,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:10,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:10,712 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:31:10,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:31:10,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:31:10,735 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:31:10,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:10,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:10,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:31:10,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812201225] [2021-06-10 12:31:10,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:31:10,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:31:10,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672179874] [2021-06-10 12:31:10,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:31:10,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:31:10,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:31:10,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:31:10,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:31:10,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 466 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:10,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:31:10,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:31:10,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:31:11,087 INFO L129 PetriNetUnfolder]: 464/1284 cut-off events. [2021-06-10 12:31:11,088 INFO L130 PetriNetUnfolder]: For 4131/5626 co-relation queries the response was YES. [2021-06-10 12:31:11,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4856 conditions, 1284 events. 464/1284 cut-off events. For 4131/5626 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10960 event pairs, 0 based on Foata normal form. 200/1359 useless extension candidates. Maximal degree in co-relation 4827. Up to 226 conditions per place. [2021-06-10 12:31:11,096 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 16 selfloop transitions, 32 changer transitions 19/119 dead transitions. [2021-06-10 12:31:11,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 774 flow [2021-06-10 12:31:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-10 12:31:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-10 12:31:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1028 transitions. [2021-06-10 12:31:11,100 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8566666666666667 [2021-06-10 12:31:11,100 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1028 transitions. [2021-06-10 12:31:11,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1028 transitions. [2021-06-10 12:31:11,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:31:11,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1028 transitions. [2021-06-10 12:31:11,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 64.25) internal successors, (1028), 16 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,105 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,106 INFO L185 Difference]: Start difference. First operand has 111 places, 93 transitions, 466 flow. Second operand 16 states and 1028 transitions. [2021-06-10 12:31:11,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 774 flow [2021-06-10 12:31:11,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 749 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-06-10 12:31:11,119 INFO L241 Difference]: Finished difference. Result has 122 places, 94 transitions, 547 flow [2021-06-10 12:31:11,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=547, PETRI_PLACES=122, PETRI_TRANSITIONS=94} [2021-06-10 12:31:11,120 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 53 predicate places. [2021-06-10 12:31:11,120 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 94 transitions, 547 flow [2021-06-10 12:31:11,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:31:11,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:31:11,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:31:11,121 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:31:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:31:11,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1141711688, now seen corresponding path program 1 times [2021-06-10 12:31:11,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:31:11,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717986538] [2021-06-10 12:31:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:31:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:31:11,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:11,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:11,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:11,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:31:11,188 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:31:11,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:31:11,198 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:31:11,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:31:11,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:11,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:11,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:11,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:31:11,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:31:11,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:31:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:31:11,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717986538] [2021-06-10 12:31:11,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:31:11,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:31:11,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221930154] [2021-06-10 12:31:11,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:31:11,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:31:11,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:31:11,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:31:11,236 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 75 [2021-06-10 12:31:11,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 94 transitions, 547 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:31:11,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 75 [2021-06-10 12:31:11,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:31:11,422 INFO L129 PetriNetUnfolder]: 284/1470 cut-off events. [2021-06-10 12:31:11,422 INFO L130 PetriNetUnfolder]: For 3709/3804 co-relation queries the response was YES. [2021-06-10 12:31:11,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4881 conditions, 1470 events. 284/1470 cut-off events. For 3709/3804 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 16059 event pairs, 2 based on Foata normal form. 1/1391 useless extension candidates. Maximal degree in co-relation 4822. Up to 215 conditions per place. [2021-06-10 12:31:11,432 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2021-06-10 12:31:11,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 108 transitions, 689 flow [2021-06-10 12:31:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:31:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:31:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 461 transitions. [2021-06-10 12:31:11,434 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7683333333333333 [2021-06-10 12:31:11,434 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 461 transitions. [2021-06-10 12:31:11,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 461 transitions. [2021-06-10 12:31:11,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:31:11,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 461 transitions. [2021-06-10 12:31:11,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,436 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,436 INFO L185 Difference]: Start difference. First operand has 122 places, 94 transitions, 547 flow. Second operand 8 states and 461 transitions. [2021-06-10 12:31:11,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 108 transitions, 689 flow [2021-06-10 12:31:11,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 592 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-06-10 12:31:11,464 INFO L241 Difference]: Finished difference. Result has 109 places, 0 transitions, 0 flow [2021-06-10 12:31:11,464 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=109, PETRI_TRANSITIONS=0} [2021-06-10 12:31:11,464 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 40 predicate places. [2021-06-10 12:31:11,464 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 0 transitions, 0 flow [2021-06-10 12:31:11,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:31:11,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:31:11,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:31:11 BasicIcfg [2021-06-10 12:31:11,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:31:11,470 INFO L168 Benchmark]: Toolchain (without parser) took 3553.80 ms. Allocated memory was 348.1 MB in the beginning and 455.1 MB in the end (delta: 107.0 MB). Free memory was 311.4 MB in the beginning and 219.1 MB in the end (delta: 92.3 MB). Peak memory consumption was 200.8 MB. Max. memory is 16.0 GB. [2021-06-10 12:31:11,470 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.3 MB in the beginning and 329.3 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:31:11,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.96 ms. Allocated memory is still 348.1 MB. Free memory was 311.1 MB in the beginning and 312.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:31:11,472 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.26 ms. Allocated memory is still 348.1 MB. Free memory was 312.6 MB in the beginning and 310.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:31:11,473 INFO L168 Benchmark]: Boogie Preprocessor took 14.13 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 309.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:31:11,474 INFO L168 Benchmark]: RCFGBuilder took 374.98 ms. Allocated memory is still 348.1 MB. Free memory was 308.4 MB in the beginning and 285.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:31:11,475 INFO L168 Benchmark]: TraceAbstraction took 2767.33 ms. Allocated memory was 348.1 MB in the beginning and 455.1 MB in the end (delta: 107.0 MB). Free memory was 285.4 MB in the beginning and 219.1 MB in the end (delta: 66.3 MB). Peak memory consumption was 174.3 MB. Max. memory is 16.0 GB. [2021-06-10 12:31:11,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 348.1 MB. Free memory was 329.3 MB in the beginning and 329.3 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 365.96 ms. Allocated memory is still 348.1 MB. Free memory was 311.1 MB in the beginning and 312.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.26 ms. Allocated memory is still 348.1 MB. Free memory was 312.6 MB in the beginning and 310.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.13 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 309.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 374.98 ms. Allocated memory is still 348.1 MB. Free memory was 308.4 MB in the beginning and 285.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2767.33 ms. Allocated memory was 348.1 MB in the beginning and 455.1 MB in the end (delta: 107.0 MB). Free memory was 285.4 MB in the beginning and 219.1 MB in the end (delta: 66.3 MB). Peak memory consumption was 174.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2672.2ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1712.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 70.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 200 SDslu, 220 SDs, 0 SdLazy, 298 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 252.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 722.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=5, InterpolantAutomatonStates: 66, 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: 24.1ms SsaConstructionTime, 136.5ms SatisfiabilityAnalysisTime, 580.3ms InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 1145 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...