/usr/bin/java -Xmx8000000000 -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/safe028_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:21:59,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:21:59,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:21:59,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:22:00,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:22:00,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:22:00,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:22:00,034 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 [2021-06-12 17:22:00,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:22:00,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:22:00,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:22:00,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:22:00,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:22:00,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:22:00,073 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:22:00,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:22:00,073 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:22:00,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:22:00,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:22:00,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:22:00,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:22:00,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:22:00,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:22:00,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:22:00,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:22:00,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:22:00,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:22:00,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:22:00,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:22:00,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:22:00,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:22:00,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:22:00,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:22:00,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:22:00,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:22:00,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:22:00,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:22:00,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:22:00,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:22:00,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:22:00,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:22:00,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:22:00,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:22:00,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:22:00,410 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:22:00,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2021-06-12 17:22:00,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e077c4150/70069bff408a405b853d7087b36cd612/FLAG51b4a5def [2021-06-12 17:22:00,976 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:22:00,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2021-06-12 17:22:00,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e077c4150/70069bff408a405b853d7087b36cd612/FLAG51b4a5def [2021-06-12 17:22:01,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e077c4150/70069bff408a405b853d7087b36cd612 [2021-06-12 17:22:01,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:22:01,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:22:01,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:22:01,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:22:01,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:22:01,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200d71fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01, skipping insertion in model container [2021-06-12 17:22:01,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:22:01,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:22:01,497 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i[950,963] [2021-06-12 17:22:01,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:22:01,683 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:22:01,697 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i[950,963] [2021-06-12 17:22:01,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:22:01,809 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:22:01,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01 WrapperNode [2021-06-12 17:22:01,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:22:01,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:22:01,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:22:01,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:22:01,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:22:01,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:22:01,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:22:01,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:22:01,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... [2021-06-12 17:22:01,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:22:01,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:22:01,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:22:01,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:22:01,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:22:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:22:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:22:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:22:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:22:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:22:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:22:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:22:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:22:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:22:01,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:22:01,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:22:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:22:01,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:22:01,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:22:01,990 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:22:02,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:22:02,432 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:22:02,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:22:02 BoogieIcfgContainer [2021-06-12 17:22:02,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:22:02,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:22:02,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:22:02,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:22:02,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:22:01" (1/3) ... [2021-06-12 17:22:02,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272e05c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:22:02, skipping insertion in model container [2021-06-12 17:22:02,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:22:01" (2/3) ... [2021-06-12 17:22:02,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272e05c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:22:02, skipping insertion in model container [2021-06-12 17:22:02,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:22:02" (3/3) ... [2021-06-12 17:22:02,441 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc.i [2021-06-12 17:22:02,447 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:22:02,447 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:22:02,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:22:02,448 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:22:02,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,483 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,483 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,484 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,484 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,485 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,485 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,486 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,486 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,486 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,488 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,488 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,489 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,493 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,493 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,495 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,495 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,495 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,495 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:22:02,501 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:22:02,518 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:22:02,534 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:22:02,534 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:22:02,534 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:22:02,534 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:22:02,534 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:22:02,534 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:22:02,534 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:22:02,534 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:22:02,543 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-12 17:22:02,913 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-12 17:22:02,994 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:02,995 INFO L472 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] [2021-06-12 17:22:02,995 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:03,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:03,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1358275693, now seen corresponding path program 1 times [2021-06-12 17:22:03,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:03,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454484901] [2021-06-12 17:22:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:03,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:03,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454484901] [2021-06-12 17:22:03,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454484901] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:03,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:03,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:22:03,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760490238] [2021-06-12 17:22:03,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:22:03,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:03,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:22:03,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:22:03,543 INFO L87 Difference]: Start difference. First operand has 8009 states, 8007 states have (on average 3.536405645060572) internal successors, (28316), 8008 states have internal predecessors, (28316), 0 states have call successors, (0), 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 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:03,999 INFO L93 Difference]: Finished difference Result 10487 states and 36117 transitions. [2021-06-12 17:22:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:22:04,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-06-12 17:22:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:04,038 INFO L225 Difference]: With dead ends: 10487 [2021-06-12 17:22:04,039 INFO L226 Difference]: Without dead ends: 3977 [2021-06-12 17:22:04,040 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 231.6ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-12 17:22:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-12 17:22:04,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2021-06-12 17:22:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3976 states have (on average 3.358148893360161) internal successors, (13352), 3976 states have internal predecessors, (13352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 13352 transitions. [2021-06-12 17:22:04,216 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 13352 transitions. Word has length 49 [2021-06-12 17:22:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:04,217 INFO L482 AbstractCegarLoop]: Abstraction has 3977 states and 13352 transitions. [2021-06-12 17:22:04,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 13352 transitions. [2021-06-12 17:22:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:22:04,252 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:04,252 INFO L472 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] [2021-06-12 17:22:04,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:22:04,252 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:04,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:04,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1479528556, now seen corresponding path program 1 times [2021-06-12 17:22:04,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:04,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398754186] [2021-06-12 17:22:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:04,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:04,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398754186] [2021-06-12 17:22:04,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398754186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:04,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:04,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:22:04,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600539166] [2021-06-12 17:22:04,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:22:04,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:04,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:22:04,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:22:04,398 INFO L87 Difference]: Start difference. First operand 3977 states and 13352 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:04,750 INFO L93 Difference]: Finished difference Result 5165 states and 17304 transitions. [2021-06-12 17:22:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 17:22:04,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-06-12 17:22:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:04,775 INFO L225 Difference]: With dead ends: 5165 [2021-06-12 17:22:04,775 INFO L226 Difference]: Without dead ends: 4229 [2021-06-12 17:22:04,776 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 273.6ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-12 17:22:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2021-06-12 17:22:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 4229. [2021-06-12 17:22:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4229 states, 4228 states have (on average 3.3632923368022705) internal successors, (14220), 4228 states have internal predecessors, (14220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4229 states to 4229 states and 14220 transitions. [2021-06-12 17:22:04,923 INFO L78 Accepts]: Start accepts. Automaton has 4229 states and 14220 transitions. Word has length 51 [2021-06-12 17:22:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:04,924 INFO L482 AbstractCegarLoop]: Abstraction has 4229 states and 14220 transitions. [2021-06-12 17:22:04,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4229 states and 14220 transitions. [2021-06-12 17:22:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-12 17:22:04,933 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:04,933 INFO L472 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] [2021-06-12 17:22:04,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:22:04,933 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:04,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:04,934 INFO L82 PathProgramCache]: Analyzing trace with hash -108366529, now seen corresponding path program 1 times [2021-06-12 17:22:04,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:04,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764104727] [2021-06-12 17:22:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:05,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:05,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764104727] [2021-06-12 17:22:05,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764104727] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:05,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:05,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:22:05,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897016687] [2021-06-12 17:22:05,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:22:05,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:05,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:22:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:22:05,048 INFO L87 Difference]: Start difference. First operand 4229 states and 14220 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) [2021-06-12 17:22:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:05,253 INFO L93 Difference]: Finished difference Result 5637 states and 18812 transitions. [2021-06-12 17:22:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:22:05,254 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 [2021-06-12 17:22:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:05,270 INFO L225 Difference]: With dead ends: 5637 [2021-06-12 17:22:05,270 INFO L226 Difference]: Without dead ends: 2997 [2021-06-12 17:22:05,270 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:22:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2021-06-12 17:22:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2997. [2021-06-12 17:22:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2997 states, 2996 states have (on average 3.246328437917223) internal successors, (9726), 2996 states have internal predecessors, (9726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 9726 transitions. [2021-06-12 17:22:05,355 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 9726 transitions. Word has length 52 [2021-06-12 17:22:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:05,358 INFO L482 AbstractCegarLoop]: Abstraction has 2997 states and 9726 transitions. [2021-06-12 17:22:05,358 INFO L483 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) [2021-06-12 17:22:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 9726 transitions. [2021-06-12 17:22:05,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-12 17:22:05,364 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:05,365 INFO L472 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, 1] [2021-06-12 17:22:05,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:22:05,365 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:05,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1588041683, now seen corresponding path program 1 times [2021-06-12 17:22:05,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:05,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141378095] [2021-06-12 17:22:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:05,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:05,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141378095] [2021-06-12 17:22:05,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141378095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:05,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:05,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:22:05,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056080577] [2021-06-12 17:22:05,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:22:05,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:05,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:22:05,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:22:05,538 INFO L87 Difference]: Start difference. First operand 2997 states and 9726 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:05,674 INFO L93 Difference]: Finished difference Result 3685 states and 11834 transitions. [2021-06-12 17:22:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:22:05,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-06-12 17:22:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:05,706 INFO L225 Difference]: With dead ends: 3685 [2021-06-12 17:22:05,706 INFO L226 Difference]: Without dead ends: 2789 [2021-06-12 17:22:05,707 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:22:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-06-12 17:22:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2021-06-12 17:22:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2788 states have (on average 3.2044476327116214) internal successors, (8934), 2788 states have internal predecessors, (8934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 8934 transitions. [2021-06-12 17:22:05,773 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 8934 transitions. Word has length 53 [2021-06-12 17:22:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:05,774 INFO L482 AbstractCegarLoop]: Abstraction has 2789 states and 8934 transitions. [2021-06-12 17:22:05,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 8934 transitions. [2021-06-12 17:22:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:22:05,780 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:05,781 INFO L472 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, 1, 1] [2021-06-12 17:22:05,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:22:05,781 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:05,784 INFO L82 PathProgramCache]: Analyzing trace with hash -126543039, now seen corresponding path program 1 times [2021-06-12 17:22:05,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:05,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147687731] [2021-06-12 17:22:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:05,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:05,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147687731] [2021-06-12 17:22:05,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147687731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:05,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:05,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:22:05,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792624253] [2021-06-12 17:22:05,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:22:05,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:05,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:22:05,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:22:05,947 INFO L87 Difference]: Start difference. First operand 2789 states and 8934 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:06,097 INFO L93 Difference]: Finished difference Result 2885 states and 9004 transitions. [2021-06-12 17:22:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:22:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-06-12 17:22:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:06,106 INFO L225 Difference]: With dead ends: 2885 [2021-06-12 17:22:06,107 INFO L226 Difference]: Without dead ends: 2117 [2021-06-12 17:22:06,108 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:22:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-06-12 17:22:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2117. [2021-06-12 17:22:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2116 states have (on average 3.0718336483931945) internal successors, (6500), 2116 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 6500 transitions. [2021-06-12 17:22:06,157 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 6500 transitions. Word has length 54 [2021-06-12 17:22:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:06,157 INFO L482 AbstractCegarLoop]: Abstraction has 2117 states and 6500 transitions. [2021-06-12 17:22:06,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 6500 transitions. [2021-06-12 17:22:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-12 17:22:06,162 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:06,163 INFO L472 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, 1, 1, 1, 1] [2021-06-12 17:22:06,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:22:06,163 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash 371546850, now seen corresponding path program 1 times [2021-06-12 17:22:06,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:06,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487507668] [2021-06-12 17:22:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:06,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:06,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487507668] [2021-06-12 17:22:06,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487507668] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:06,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:06,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:22:06,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757038181] [2021-06-12 17:22:06,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:22:06,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:06,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:22:06,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:22:06,297 INFO L87 Difference]: Start difference. First operand 2117 states and 6500 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:06,447 INFO L93 Difference]: Finished difference Result 1766 states and 5267 transitions. [2021-06-12 17:22:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:22:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-06-12 17:22:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:06,451 INFO L225 Difference]: With dead ends: 1766 [2021-06-12 17:22:06,452 INFO L226 Difference]: Without dead ends: 1334 [2021-06-12 17:22:06,452 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:22:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-06-12 17:22:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1334. [2021-06-12 17:22:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.9182295573893473) internal successors, (3890), 1333 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3890 transitions. [2021-06-12 17:22:06,481 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3890 transitions. Word has length 56 [2021-06-12 17:22:06,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:06,482 INFO L482 AbstractCegarLoop]: Abstraction has 1334 states and 3890 transitions. [2021-06-12 17:22:06,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3890 transitions. [2021-06-12 17:22:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-12 17:22:06,486 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:06,487 INFO L472 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:22:06,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:22:06,487 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1475851692, now seen corresponding path program 1 times [2021-06-12 17:22:06,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:06,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013546313] [2021-06-12 17:22:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:06,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:06,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013546313] [2021-06-12 17:22:06,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013546313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:06,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:06,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:22:06,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463974393] [2021-06-12 17:22:06,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:22:06,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:06,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:22:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:22:06,603 INFO L87 Difference]: Start difference. First operand 1334 states and 3890 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:06,707 INFO L93 Difference]: Finished difference Result 2025 states and 5915 transitions. [2021-06-12 17:22:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:22:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-06-12 17:22:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:06,710 INFO L225 Difference]: With dead ends: 2025 [2021-06-12 17:22:06,710 INFO L226 Difference]: Without dead ends: 998 [2021-06-12 17:22:06,711 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:22:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-06-12 17:22:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2021-06-12 17:22:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 2.803410230692076) internal successors, (2795), 997 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 2795 transitions. [2021-06-12 17:22:06,729 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 2795 transitions. Word has length 60 [2021-06-12 17:22:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:06,729 INFO L482 AbstractCegarLoop]: Abstraction has 998 states and 2795 transitions. [2021-06-12 17:22:06,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,729 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2795 transitions. [2021-06-12 17:22:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-12 17:22:06,731 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:22:06,731 INFO L472 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:22:06,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:22:06,731 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:22:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:22:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash -977664142, now seen corresponding path program 2 times [2021-06-12 17:22:06,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:22:06,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094153650] [2021-06-12 17:22:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:22:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:22:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:22:06,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:22:06,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094153650] [2021-06-12 17:22:06,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094153650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:22:06,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:22:06,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:22:06,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757175358] [2021-06-12 17:22:06,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:22:06,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:22:06,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:22:06,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:22:06,826 INFO L87 Difference]: Start difference. First operand 998 states and 2795 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:22:06,906 INFO L93 Difference]: Finished difference Result 944 states and 2633 transitions. [2021-06-12 17:22:06,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 17:22:06,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-06-12 17:22:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:22:06,906 INFO L225 Difference]: With dead ends: 944 [2021-06-12 17:22:06,906 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:22:06,906 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:22:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:22:06,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:22:06,907 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) [2021-06-12 17:22:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:22:06,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-12 17:22:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:22:06,907 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:22:06,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:22:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:22:06,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:22:06,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 17:22:06,909 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:22:06,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:22:06 BasicIcfg [2021-06-12 17:22:06,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:22:06,912 INFO L168 Benchmark]: Toolchain (without parser) took 5603.13 ms. Allocated memory was 184.5 MB in the beginning and 348.1 MB in the end (delta: 163.6 MB). Free memory was 147.4 MB in the beginning and 230.5 MB in the end (delta: -83.1 MB). Peak memory consumption was 80.8 MB. Max. memory is 8.0 GB. [2021-06-12 17:22:06,913 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 184.5 MB. Free memory is still 165.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:22:06,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.72 ms. Allocated memory is still 184.5 MB. Free memory was 147.2 MB in the beginning and 145.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-12 17:22:06,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 184.5 MB. Free memory was 145.2 MB in the beginning and 143.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:22:06,914 INFO L168 Benchmark]: Boogie Preprocessor took 31.45 ms. Allocated memory is still 184.5 MB. Free memory was 143.3 MB in the beginning and 142.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:22:06,914 INFO L168 Benchmark]: RCFGBuilder took 533.22 ms. Allocated memory is still 184.5 MB. Free memory was 141.7 MB in the beginning and 118.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:22:06,914 INFO L168 Benchmark]: TraceAbstraction took 4475.74 ms. Allocated memory was 184.5 MB in the beginning and 348.1 MB in the end (delta: 163.6 MB). Free memory was 118.1 MB in the beginning and 230.5 MB in the end (delta: -112.4 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. [2021-06-12 17:22:06,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 184.5 MB. Free memory is still 165.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 498.72 ms. Allocated memory is still 184.5 MB. Free memory was 147.2 MB in the beginning and 145.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 184.5 MB. Free memory was 145.2 MB in the beginning and 143.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.45 ms. Allocated memory is still 184.5 MB. Free memory was 143.3 MB in the beginning and 142.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 533.22 ms. Allocated memory is still 184.5 MB. Free memory was 141.7 MB in the beginning and 118.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4475.74 ms. Allocated memory was 184.5 MB in the beginning and 348.1 MB in the end (delta: 163.6 MB). Free memory was 118.1 MB in the beginning and 230.5 MB in the end (delta: -112.4 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4376.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 146.5ms, AutomataDifference: 1832.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 379.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 823 SDtfs, 1331 SDslu, 2933 SDs, 0 SdLazy, 352 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 313.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1195.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8009occurred in iteration=0, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 559.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.7ms SsaConstructionTime, 211.8ms SatisfiabilityAnalysisTime, 992.9ms InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 1683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...