/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:03:39,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:03:39,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:03:39,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:03:39,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:03:39,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:03:39,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:03:39,671 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-FA-NoLbe.epf [2021-04-15 01:03:39,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:03:39,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:03:39,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:03:39,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:03:39,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:03:39,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:03:39,701 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:03:39,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:03:39,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:03:39,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:03:39,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:03:39,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:03:39,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:03:39,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:03:39,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:03:39,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:03:39,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:03:39,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:03:39,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:03:39,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:03:39,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:03:39,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:03:39,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:03:39,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:03:39,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:03:39,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:03:39,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:03:39,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:03:39,954 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:03:39,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-04-15 01:03:40,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d90f9a4a/dca5639d7b014c96818d482608bfa8f7/FLAG596951c67 [2021-04-15 01:03:40,451 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:03:40,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-04-15 01:03:40,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d90f9a4a/dca5639d7b014c96818d482608bfa8f7/FLAG596951c67 [2021-04-15 01:03:40,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d90f9a4a/dca5639d7b014c96818d482608bfa8f7 [2021-04-15 01:03:40,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:03:40,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:03:40,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:03:40,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:03:40,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:03:40,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff99382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40, skipping insertion in model container [2021-04-15 01:03:40,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:03:40,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:03:40,646 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/safe025_pso.opt.i[949,962] [2021-04-15 01:03:40,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:03:40,783 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:03:40,791 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/safe025_pso.opt.i[949,962] [2021-04-15 01:03:40,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:03:40,877 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:03:40,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40 WrapperNode [2021-04-15 01:03:40,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:03:40,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:03:40,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:03:40,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:03:40,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:03:40,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:03:40,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:03:40,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:03:40,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (1/1) ... [2021-04-15 01:03:40,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:03:40,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:03:40,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:03:40,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:03:40,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (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 [2021-04-15 01:03:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:03:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 01:03:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:03:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:03:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 01:03:41,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 01:03:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 01:03:41,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 01:03:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-15 01:03:41,015 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-15 01:03:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:03:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 01:03:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:03:41,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:03:41,016 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:03:41,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:03:41,345 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 01:03:41,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:03:41 BoogieIcfgContainer [2021-04-15 01:03:41,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:03:41,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:03:41,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:03:41,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:03:41,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:03:40" (1/3) ... [2021-04-15 01:03:41,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d00ed20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:03:41, skipping insertion in model container [2021-04-15 01:03:41,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:03:40" (2/3) ... [2021-04-15 01:03:41,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d00ed20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:03:41, skipping insertion in model container [2021-04-15 01:03:41,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:03:41" (3/3) ... [2021-04-15 01:03:41,352 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2021-04-15 01:03:41,356 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:03:41,356 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:03:41,359 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:03:41,359 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,387 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,387 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,388 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,390 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,390 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,395 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,395 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,395 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,401 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:03:41,405 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 01:03:41,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-15 01:03:41,435 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:03:41,436 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:03:41,436 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:03:41,436 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:03:41,436 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:03:41,436 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:03:41,436 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:03:41,436 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:03:41,444 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-04-15 01:03:41,867 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-04-15 01:03:41,932 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:41,933 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:41,933 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:41,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:41,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1037275097, now seen corresponding path program 1 times [2021-04-15 01:03:41,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:41,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601270914] [2021-04-15 01:03:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:42,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601270914] [2021-04-15 01:03:42,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:42,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:03:42,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409223224] [2021-04-15 01:03:42,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:03:42,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:42,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:03:42,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:03:42,367 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:42,769 INFO L93 Difference]: Finished difference Result 19776 states and 68252 transitions. [2021-04-15 01:03:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:03:42,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-04-15 01:03:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:42,866 INFO L225 Difference]: With dead ends: 19776 [2021-04-15 01:03:42,866 INFO L226 Difference]: Without dead ends: 6498 [2021-04-15 01:03:42,867 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:03:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-04-15 01:03:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 5376. [2021-04-15 01:03:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.3869767441860463) internal successors, (18205), 5375 states have internal predecessors, (18205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:43,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18205 transitions. [2021-04-15 01:03:43,153 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18205 transitions. Word has length 40 [2021-04-15 01:03:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:43,155 INFO L480 AbstractCegarLoop]: Abstraction has 5376 states and 18205 transitions. [2021-04-15 01:03:43,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18205 transitions. [2021-04-15 01:03:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-04-15 01:03:43,171 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:43,172 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:43,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:03:43,176 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:43,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1562479686, now seen corresponding path program 1 times [2021-04-15 01:03:43,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:43,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008819747] [2021-04-15 01:03:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:43,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008819747] [2021-04-15 01:03:43,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:43,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:03:43,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489562968] [2021-04-15 01:03:43,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:03:43,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:03:43,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:03:43,336 INFO L87 Difference]: Start difference. First operand 5376 states and 18205 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:43,607 INFO L93 Difference]: Finished difference Result 7160 states and 23840 transitions. [2021-04-15 01:03:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:03:43,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-04-15 01:03:43,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:43,631 INFO L225 Difference]: With dead ends: 7160 [2021-04-15 01:03:43,631 INFO L226 Difference]: Without dead ends: 5748 [2021-04-15 01:03:43,632 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:03:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-04-15 01:03:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 4676. [2021-04-15 01:03:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4676 states, 4675 states have (on average 3.3614973262032084) internal successors, (15715), 4675 states have internal predecessors, (15715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 15715 transitions. [2021-04-15 01:03:43,767 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 15715 transitions. Word has length 42 [2021-04-15 01:03:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:43,767 INFO L480 AbstractCegarLoop]: Abstraction has 4676 states and 15715 transitions. [2021-04-15 01:03:43,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 15715 transitions. [2021-04-15 01:03:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-04-15 01:03:43,774 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:43,774 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:43,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:03:43,774 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:43,774 INFO L82 PathProgramCache]: Analyzing trace with hash -231343092, now seen corresponding path program 1 times [2021-04-15 01:03:43,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:43,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501289420] [2021-04-15 01:03:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:43,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501289420] [2021-04-15 01:03:43,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:43,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:03:43,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755273317] [2021-04-15 01:03:43,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:03:43,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:03:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:03:43,850 INFO L87 Difference]: Start difference. First operand 4676 states and 15715 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:44,065 INFO L93 Difference]: Finished difference Result 6324 states and 20919 transitions. [2021-04-15 01:03:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:03:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-04-15 01:03:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:44,097 INFO L225 Difference]: With dead ends: 6324 [2021-04-15 01:03:44,097 INFO L226 Difference]: Without dead ends: 5220 [2021-04-15 01:03:44,098 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 167.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:03:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5220 states. [2021-04-15 01:03:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5220 to 4052. [2021-04-15 01:03:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 4051 states have (on average 3.354974080473957) internal successors, (13591), 4051 states have internal predecessors, (13591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 13591 transitions. [2021-04-15 01:03:44,196 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 13591 transitions. Word has length 43 [2021-04-15 01:03:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:44,196 INFO L480 AbstractCegarLoop]: Abstraction has 4052 states and 13591 transitions. [2021-04-15 01:03:44,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 13591 transitions. [2021-04-15 01:03:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-15 01:03:44,203 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:44,203 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:44,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:03:44,203 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1890621063, now seen corresponding path program 1 times [2021-04-15 01:03:44,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:44,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98705381] [2021-04-15 01:03:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:44,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98705381] [2021-04-15 01:03:44,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:44,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:03:44,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689814318] [2021-04-15 01:03:44,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:03:44,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:44,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:03:44,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:03:44,288 INFO L87 Difference]: Start difference. First operand 4052 states and 13591 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:44,533 INFO L93 Difference]: Finished difference Result 5910 states and 19449 transitions. [2021-04-15 01:03:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:03:44,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-04-15 01:03:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:44,545 INFO L225 Difference]: With dead ends: 5910 [2021-04-15 01:03:44,545 INFO L226 Difference]: Without dead ends: 4890 [2021-04-15 01:03:44,545 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:03:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4890 states. [2021-04-15 01:03:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4890 to 3597. [2021-04-15 01:03:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 3.3264738598442714) internal successors, (11962), 3596 states have internal predecessors, (11962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 11962 transitions. [2021-04-15 01:03:44,621 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 11962 transitions. Word has length 44 [2021-04-15 01:03:44,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:44,621 INFO L480 AbstractCegarLoop]: Abstraction has 3597 states and 11962 transitions. [2021-04-15 01:03:44,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 11962 transitions. [2021-04-15 01:03:44,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-15 01:03:44,627 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:44,627 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:44,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:03:44,627 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:44,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:44,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1325944085, now seen corresponding path program 1 times [2021-04-15 01:03:44,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:44,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338476155] [2021-04-15 01:03:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:44,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338476155] [2021-04-15 01:03:44,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:44,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:03:44,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514917548] [2021-04-15 01:03:44,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:03:44,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:44,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:03:44,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:03:44,680 INFO L87 Difference]: Start difference. First operand 3597 states and 11962 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:44,772 INFO L93 Difference]: Finished difference Result 4660 states and 15241 transitions. [2021-04-15 01:03:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:03:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-04-15 01:03:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:44,780 INFO L225 Difference]: With dead ends: 4660 [2021-04-15 01:03:44,781 INFO L226 Difference]: Without dead ends: 3224 [2021-04-15 01:03:44,781 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:03:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2021-04-15 01:03:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3224. [2021-04-15 01:03:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3223 states have (on average 3.250077567483711) internal successors, (10475), 3223 states have internal predecessors, (10475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 10475 transitions. [2021-04-15 01:03:44,844 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 10475 transitions. Word has length 45 [2021-04-15 01:03:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:44,844 INFO L480 AbstractCegarLoop]: Abstraction has 3224 states and 10475 transitions. [2021-04-15 01:03:44,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 10475 transitions. [2021-04-15 01:03:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 01:03:44,849 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:44,849 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:44,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 01:03:44,849 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1195279560, now seen corresponding path program 1 times [2021-04-15 01:03:44,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:44,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753630604] [2021-04-15 01:03:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:44,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753630604] [2021-04-15 01:03:44,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:44,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:03:44,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546965833] [2021-04-15 01:03:44,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:03:44,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:44,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:03:44,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:03:44,916 INFO L87 Difference]: Start difference. First operand 3224 states and 10475 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:45,052 INFO L93 Difference]: Finished difference Result 3398 states and 10711 transitions. [2021-04-15 01:03:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 01:03:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-04-15 01:03:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:45,057 INFO L225 Difference]: With dead ends: 3398 [2021-04-15 01:03:45,058 INFO L226 Difference]: Without dead ends: 2222 [2021-04-15 01:03:45,058 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:03:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-04-15 01:03:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2222. [2021-04-15 01:03:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 3.0756416028815847) internal successors, (6831), 2221 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 6831 transitions. [2021-04-15 01:03:45,094 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 6831 transitions. Word has length 46 [2021-04-15 01:03:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:45,094 INFO L480 AbstractCegarLoop]: Abstraction has 2222 states and 6831 transitions. [2021-04-15 01:03:45,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 6831 transitions. [2021-04-15 01:03:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-04-15 01:03:45,098 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:45,098 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:45,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 01:03:45,098 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:45,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:45,098 INFO L82 PathProgramCache]: Analyzing trace with hash -802248985, now seen corresponding path program 1 times [2021-04-15 01:03:45,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:45,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772052040] [2021-04-15 01:03:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:45,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772052040] [2021-04-15 01:03:45,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:45,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:03:45,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041506276] [2021-04-15 01:03:45,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:03:45,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:45,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:03:45,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:03:45,196 INFO L87 Difference]: Start difference. First operand 2222 states and 6831 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:45,304 INFO L93 Difference]: Finished difference Result 1835 states and 5487 transitions. [2021-04-15 01:03:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 01:03:45,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-04-15 01:03:45,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:45,307 INFO L225 Difference]: With dead ends: 1835 [2021-04-15 01:03:45,307 INFO L226 Difference]: Without dead ends: 1163 [2021-04-15 01:03:45,308 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 89.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:03:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-04-15 01:03:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1131. [2021-04-15 01:03:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.8902654867256636) internal successors, (3266), 1130 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3266 transitions. [2021-04-15 01:03:45,325 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3266 transitions. Word has length 48 [2021-04-15 01:03:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:45,325 INFO L480 AbstractCegarLoop]: Abstraction has 1131 states and 3266 transitions. [2021-04-15 01:03:45,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3266 transitions. [2021-04-15 01:03:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:03:45,327 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:45,327 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:45,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-15 01:03:45,329 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:45,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:45,329 INFO L82 PathProgramCache]: Analyzing trace with hash -182716951, now seen corresponding path program 1 times [2021-04-15 01:03:45,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:45,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037604839] [2021-04-15 01:03:45,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:45,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037604839] [2021-04-15 01:03:45,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:45,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:03:45,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074291480] [2021-04-15 01:03:45,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:03:45,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:45,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:03:45,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:03:45,421 INFO L87 Difference]: Start difference. First operand 1131 states and 3266 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:45,491 INFO L93 Difference]: Finished difference Result 1812 states and 5236 transitions. [2021-04-15 01:03:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 01:03:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:03:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:45,496 INFO L225 Difference]: With dead ends: 1812 [2021-04-15 01:03:45,496 INFO L226 Difference]: Without dead ends: 1161 [2021-04-15 01:03:45,496 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-04-15 01:03:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-04-15 01:03:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1011. [2021-04-15 01:03:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 2.8653465346534652) internal successors, (2894), 1010 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2894 transitions. [2021-04-15 01:03:45,511 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2894 transitions. Word has length 52 [2021-04-15 01:03:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:45,512 INFO L480 AbstractCegarLoop]: Abstraction has 1011 states and 2894 transitions. [2021-04-15 01:03:45,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2894 transitions. [2021-04-15 01:03:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:03:45,513 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:45,513 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:45,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-15 01:03:45,514 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash 417309959, now seen corresponding path program 2 times [2021-04-15 01:03:45,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:45,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434402610] [2021-04-15 01:03:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:45,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434402610] [2021-04-15 01:03:45,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:45,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:03:45,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964983277] [2021-04-15 01:03:45,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:03:45,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:45,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:03:45,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:03:45,607 INFO L87 Difference]: Start difference. First operand 1011 states and 2894 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:45,673 INFO L93 Difference]: Finished difference Result 1564 states and 4506 transitions. [2021-04-15 01:03:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:03:45,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:03:45,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:45,676 INFO L225 Difference]: With dead ends: 1564 [2021-04-15 01:03:45,676 INFO L226 Difference]: Without dead ends: 1091 [2021-04-15 01:03:45,676 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-04-15 01:03:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2021-04-15 01:03:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1011. [2021-04-15 01:03:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 2.8514851485148514) internal successors, (2880), 1010 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2880 transitions. [2021-04-15 01:03:45,693 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2880 transitions. Word has length 52 [2021-04-15 01:03:45,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:45,693 INFO L480 AbstractCegarLoop]: Abstraction has 1011 states and 2880 transitions. [2021-04-15 01:03:45,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2880 transitions. [2021-04-15 01:03:45,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:03:45,695 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:45,695 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:45,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-15 01:03:45,696 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:45,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:45,696 INFO L82 PathProgramCache]: Analyzing trace with hash 937883645, now seen corresponding path program 3 times [2021-04-15 01:03:45,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:45,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910137132] [2021-04-15 01:03:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:45,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910137132] [2021-04-15 01:03:45,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:45,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:03:45,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128328279] [2021-04-15 01:03:45,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:03:45,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:45,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:03:45,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:03:45,784 INFO L87 Difference]: Start difference. First operand 1011 states and 2880 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:45,866 INFO L93 Difference]: Finished difference Result 1694 states and 4863 transitions. [2021-04-15 01:03:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:03:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:03:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:45,869 INFO L225 Difference]: With dead ends: 1694 [2021-04-15 01:03:45,869 INFO L226 Difference]: Without dead ends: 1037 [2021-04-15 01:03:45,869 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-04-15 01:03:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-04-15 01:03:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 957. [2021-04-15 01:03:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 2.833682008368201) internal successors, (2709), 956 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 2709 transitions. [2021-04-15 01:03:45,890 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 2709 transitions. Word has length 52 [2021-04-15 01:03:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:45,890 INFO L480 AbstractCegarLoop]: Abstraction has 957 states and 2709 transitions. [2021-04-15 01:03:45,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:45,890 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 2709 transitions. [2021-04-15 01:03:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:03:45,891 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:45,892 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:45,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-15 01:03:45,892 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash 814906547, now seen corresponding path program 4 times [2021-04-15 01:03:45,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:45,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30056333] [2021-04-15 01:03:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:45,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30056333] [2021-04-15 01:03:45,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:45,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:03:45,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685095044] [2021-04-15 01:03:45,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:03:45,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:45,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:03:45,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:03:45,986 INFO L87 Difference]: Start difference. First operand 957 states and 2709 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:46,067 INFO L93 Difference]: Finished difference Result 1456 states and 4174 transitions. [2021-04-15 01:03:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:03:46,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:03:46,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:46,068 INFO L225 Difference]: With dead ends: 1456 [2021-04-15 01:03:46,068 INFO L226 Difference]: Without dead ends: 637 [2021-04-15 01:03:46,069 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:03:46,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-04-15 01:03:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2021-04-15 01:03:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.809748427672956) internal successors, (1787), 636 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1787 transitions. [2021-04-15 01:03:46,079 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1787 transitions. Word has length 52 [2021-04-15 01:03:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:46,079 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 1787 transitions. [2021-04-15 01:03:46,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1787 transitions. [2021-04-15 01:03:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:03:46,080 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:03:46,080 INFO L551 BasicCegarLoop]: 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] [2021-04-15 01:03:46,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-15 01:03:46,080 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:03:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:03:46,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1289909757, now seen corresponding path program 5 times [2021-04-15 01:03:46,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:03:46,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657181106] [2021-04-15 01:03:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:03:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:03:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:03:46,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657181106] [2021-04-15 01:03:46,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:03:46,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:03:46,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284575153] [2021-04-15 01:03:46,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:03:46,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:03:46,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:03:46,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:03:46,143 INFO L87 Difference]: Start difference. First operand 637 states and 1787 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:03:46,188 INFO L93 Difference]: Finished difference Result 583 states and 1625 transitions. [2021-04-15 01:03:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-15 01:03:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:03:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:03:46,188 INFO L225 Difference]: With dead ends: 583 [2021-04-15 01:03:46,188 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:03:46,188 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:03:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:03:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:03:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:03:46,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-04-15 01:03:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:03:46,189 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:03:46,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:03:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:03:46,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:03:46,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-15 01:03:46,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:03:46 BasicIcfg [2021-04-15 01:03:46,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:03:46,193 INFO L168 Benchmark]: Toolchain (without parser) took 5708.90 ms. Allocated memory was 255.9 MB in the beginning and 880.8 MB in the end (delta: 625.0 MB). Free memory was 235.0 MB in the beginning and 397.7 MB in the end (delta: -162.8 MB). Peak memory consumption was 461.8 MB. Max. memory is 16.0 GB. [2021-04-15 01:03:46,193 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:03:46,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.65 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 235.0 MB in the beginning and 354.6 MB in the end (delta: -119.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.0 GB. [2021-04-15 01:03:46,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.56 ms. Allocated memory is still 392.2 MB. Free memory was 354.6 MB in the beginning and 352.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:03:46,198 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 392.2 MB. Free memory was 352.5 MB in the beginning and 351.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:03:46,198 INFO L168 Benchmark]: RCFGBuilder took 396.42 ms. Allocated memory is still 392.2 MB. Free memory was 351.0 MB in the beginning and 328.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:03:46,198 INFO L168 Benchmark]: TraceAbstraction took 4844.73 ms. Allocated memory was 392.2 MB in the beginning and 880.8 MB in the end (delta: 488.6 MB). Free memory was 328.0 MB in the beginning and 397.7 MB in the end (delta: -69.7 MB). Peak memory consumption was 419.3 MB. Max. memory is 16.0 GB. [2021-04-15 01:03:46,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 392.65 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 235.0 MB in the beginning and 354.6 MB in the end (delta: -119.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.56 ms. Allocated memory is still 392.2 MB. Free memory was 354.6 MB in the beginning and 352.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 392.2 MB. Free memory was 352.5 MB in the beginning and 351.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 396.42 ms. Allocated memory is still 392.2 MB. Free memory was 351.0 MB in the beginning and 328.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4844.73 ms. Allocated memory was 392.2 MB in the beginning and 880.8 MB in the end (delta: 488.6 MB). Free memory was 328.0 MB in the beginning and 397.7 MB in the end (delta: -69.7 MB). Peak memory consumption was 419.3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4755.7ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 112.2ms, AutomataDifference: 2073.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 431.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1198 SDtfs, 1689 SDslu, 4219 SDs, 0 SdLazy, 605 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 377.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1268.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 759.9ms AutomataMinimizationTime, 12 MinimizatonAttempts, 4997 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.5ms SsaConstructionTime, 181.3ms SatisfiabilityAnalysisTime, 996.6ms InterpolantComputationTime, 568 NumberOfCodeBlocks, 568 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 2480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...