/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/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:14:26,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:14:26,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:14:26,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:14:26,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:14:26,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:14:26,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:14:26,305 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 17:14:26,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:14:26,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:14:26,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:14:26,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:14:26,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:14:26,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:14:26,321 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:14:26,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:14:26,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:14:26,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:14:26,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:14:26,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:14:26,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:14:26,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:14:26,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:14:26,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:14:26,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:14:26,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:14:26,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:14:26,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:14:26,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:14:26,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:14:26,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:14:26,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:14:26,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:14:26,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:14:26,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:14:26,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:14:26,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:14:26,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:14:26,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:14:26,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:14:26,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:14:26,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:14:26,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:14:26,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:14:26,556 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:14:26,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-06-12 17:14:26,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7355ced1d/37114cea305c4d82ae2e03aba4cfffd4/FLAG4da37fb27 [2021-06-12 17:14:27,097 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:14:27,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-06-12 17:14:27,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7355ced1d/37114cea305c4d82ae2e03aba4cfffd4/FLAG4da37fb27 [2021-06-12 17:14:27,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7355ced1d/37114cea305c4d82ae2e03aba4cfffd4 [2021-06-12 17:14:27,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:14:27,331 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:14:27,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:14:27,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:14:27,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:14:27,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f567bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27, skipping insertion in model container [2021-06-12 17:14:27,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:14:27,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:14:27,455 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/safe002_tso.opt.i[949,962] [2021-06-12 17:14:27,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:14:27,597 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:14:27,608 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/safe002_tso.opt.i[949,962] [2021-06-12 17:14:27,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:14:27,669 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:14:27,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27 WrapperNode [2021-06-12 17:14:27,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:14:27,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:14:27,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:14:27,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:14:27,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:14:27,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:14:27,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:14:27,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:14:27,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (1/1) ... [2021-06-12 17:14:27,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:14:27,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:14:27,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:14:27,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:14:27,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (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 17:14:27,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:14:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:14:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:14:27,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:14:27,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:14:27,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:14:27,761 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 17:14:28,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:14:28,042 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:14:28,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:14:28 BoogieIcfgContainer [2021-06-12 17:14:28,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:14:28,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:14:28,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:14:28,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:14:28,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:14:27" (1/3) ... [2021-06-12 17:14:28,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0c08bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:14:28, skipping insertion in model container [2021-06-12 17:14:28,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:14:27" (2/3) ... [2021-06-12 17:14:28,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0c08bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:14:28, skipping insertion in model container [2021-06-12 17:14:28,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:14:28" (3/3) ... [2021-06-12 17:14:28,048 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2021-06-12 17:14:28,051 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:14:28,051 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:14:28,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:14:28,052 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:14:28,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,072 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,072 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,072 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,073 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,074 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,075 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,076 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,076 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,077 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,078 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,078 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,078 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:14:28,087 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:14:28,100 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:14:28,111 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:14:28,111 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:14:28,111 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:14:28,111 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:14:28,111 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:14:28,112 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:14:28,112 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:14:28,112 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:14:28,118 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-12 17:14:28,437 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 17:14:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 17:14:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-12 17:14:28,506 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:28,507 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 17:14:28,507 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-12 17:14:28,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:28,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930679329] [2021-06-12 17:14:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:28,757 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 17:14:28,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:28,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930679329] [2021-06-12 17:14:28,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930679329] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:28,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:28,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:14:28,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065565004] [2021-06-12 17:14:28,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:14:28,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:28,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:14:28,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:14:28,792 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 8.166666666666666) internal successors, (49), 6 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 17:14:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:29,075 INFO L93 Difference]: Finished difference Result 12223 states and 42407 transitions. [2021-06-12 17:14:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:14:29,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 17:14:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:29,109 INFO L225 Difference]: With dead ends: 12223 [2021-06-12 17:14:29,109 INFO L226 Difference]: Without dead ends: 4628 [2021-06-12 17:14:29,110 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:14:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2021-06-12 17:14:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4628. [2021-06-12 17:14:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4628 states, 4627 states have (on average 3.38599524529933) internal successors, (15667), 4627 states have internal predecessors, (15667), 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 17:14:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 15667 transitions. [2021-06-12 17:14:29,294 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 15667 transitions. Word has length 49 [2021-06-12 17:14:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:29,297 INFO L482 AbstractCegarLoop]: Abstraction has 4628 states and 15667 transitions. [2021-06-12 17:14:29,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 17:14:29,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 15667 transitions. [2021-06-12 17:14:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:14:29,310 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:29,310 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 17:14:29,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:14:29,311 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:29,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:29,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1824129874, now seen corresponding path program 1 times [2021-06-12 17:14:29,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:29,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581303814] [2021-06-12 17:14:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:29,479 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 17:14:29,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:29,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581303814] [2021-06-12 17:14:29,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581303814] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:29,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:29,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:14:29,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234231087] [2021-06-12 17:14:29,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:14:29,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:29,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:14:29,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:14:29,483 INFO L87 Difference]: Start difference. First operand 4628 states and 15667 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 17:14:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:29,709 INFO L93 Difference]: Finished difference Result 7078 states and 23762 transitions. [2021-06-12 17:14:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:14:29,710 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 17:14:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:29,725 INFO L225 Difference]: With dead ends: 7078 [2021-06-12 17:14:29,725 INFO L226 Difference]: Without dead ends: 3858 [2021-06-12 17:14:29,726 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 221.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:14:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-06-12 17:14:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3858. [2021-06-12 17:14:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3857 states have (on average 3.3344568317345087) internal successors, (12861), 3857 states have internal predecessors, (12861), 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 17:14:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 12861 transitions. [2021-06-12 17:14:29,807 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 12861 transitions. Word has length 51 [2021-06-12 17:14:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:29,808 INFO L482 AbstractCegarLoop]: Abstraction has 3858 states and 12861 transitions. [2021-06-12 17:14:29,808 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 17:14:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 12861 transitions. [2021-06-12 17:14:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:14:29,814 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:29,815 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 17:14:29,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:14:29,815 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:29,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:29,815 INFO L82 PathProgramCache]: Analyzing trace with hash -11566213, now seen corresponding path program 1 times [2021-06-12 17:14:29,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:29,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314042276] [2021-06-12 17:14:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:29,947 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 17:14:29,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:29,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314042276] [2021-06-12 17:14:29,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314042276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:29,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:29,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:14:29,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815488066] [2021-06-12 17:14:29,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:14:29,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:29,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:14:29,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:14:29,948 INFO L87 Difference]: Start difference. First operand 3858 states and 12861 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 17:14:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:30,196 INFO L93 Difference]: Finished difference Result 6098 states and 20049 transitions. [2021-06-12 17:14:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:14:30,198 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 17:14:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:30,216 INFO L225 Difference]: With dead ends: 6098 [2021-06-12 17:14:30,216 INFO L226 Difference]: Without dead ends: 4642 [2021-06-12 17:14:30,217 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 208.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:14:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2021-06-12 17:14:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 3906. [2021-06-12 17:14:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3906 states, 3905 states have (on average 3.2934699103713188) internal successors, (12861), 3905 states have internal predecessors, (12861), 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 17:14:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3906 states to 3906 states and 12861 transitions. [2021-06-12 17:14:30,328 INFO L78 Accepts]: Start accepts. Automaton has 3906 states and 12861 transitions. Word has length 54 [2021-06-12 17:14:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:30,329 INFO L482 AbstractCegarLoop]: Abstraction has 3906 states and 12861 transitions. [2021-06-12 17:14:30,330 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 17:14:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3906 states and 12861 transitions. [2021-06-12 17:14:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 17:14:30,336 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:30,336 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 17:14:30,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:14:30,336 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:30,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:30,338 INFO L82 PathProgramCache]: Analyzing trace with hash 914935171, now seen corresponding path program 1 times [2021-06-12 17:14:30,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:30,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511023289] [2021-06-12 17:14:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:30,479 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 17:14:30,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:30,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511023289] [2021-06-12 17:14:30,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511023289] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:30,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:30,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:14:30,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558360378] [2021-06-12 17:14:30,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:14:30,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:30,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:14:30,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:14:30,481 INFO L87 Difference]: Start difference. First operand 3906 states and 12861 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 17:14:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:30,572 INFO L93 Difference]: Finished difference Result 5306 states and 17451 transitions. [2021-06-12 17:14:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 17:14:30,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 17:14:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:30,584 INFO L225 Difference]: With dead ends: 5306 [2021-06-12 17:14:30,584 INFO L226 Difference]: Without dead ends: 2698 [2021-06-12 17:14:30,584 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-12 17:14:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-06-12 17:14:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2698. [2021-06-12 17:14:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2697 states have (on average 3.236559139784946) internal successors, (8729), 2697 states have internal predecessors, (8729), 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 17:14:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 8729 transitions. [2021-06-12 17:14:30,674 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 8729 transitions. Word has length 54 [2021-06-12 17:14:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:30,675 INFO L482 AbstractCegarLoop]: Abstraction has 2698 states and 8729 transitions. [2021-06-12 17:14:30,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 17:14:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 8729 transitions. [2021-06-12 17:14:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-12 17:14:30,681 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:30,681 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 17:14:30,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:14:30,684 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:30,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:30,685 INFO L82 PathProgramCache]: Analyzing trace with hash -44535618, now seen corresponding path program 1 times [2021-06-12 17:14:30,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:30,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511273966] [2021-06-12 17:14:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:30,785 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 17:14:30,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:30,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511273966] [2021-06-12 17:14:30,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511273966] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:30,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:30,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:14:30,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179522414] [2021-06-12 17:14:30,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:14:30,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:14:30,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:14:30,789 INFO L87 Difference]: Start difference. First operand 2698 states and 8729 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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 17:14:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:30,905 INFO L93 Difference]: Finished difference Result 3618 states and 11675 transitions. [2021-06-12 17:14:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:14:30,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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 17:14:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:30,922 INFO L225 Difference]: With dead ends: 3618 [2021-06-12 17:14:30,922 INFO L226 Difference]: Without dead ends: 1798 [2021-06-12 17:14:30,923 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:14:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-06-12 17:14:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1798. [2021-06-12 17:14:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 3.132999443516973) internal successors, (5630), 1797 states have internal predecessors, (5630), 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 17:14:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 5630 transitions. [2021-06-12 17:14:30,966 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 5630 transitions. Word has length 56 [2021-06-12 17:14:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:30,966 INFO L482 AbstractCegarLoop]: Abstraction has 1798 states and 5630 transitions. [2021-06-12 17:14:30,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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 17:14:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 5630 transitions. [2021-06-12 17:14:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:14:30,969 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:30,969 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] [2021-06-12 17:14:30,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:14:30,969 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:30,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1511387322, now seen corresponding path program 1 times [2021-06-12 17:14:30,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:30,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234696941] [2021-06-12 17:14:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:31,050 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 17:14:31,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:31,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234696941] [2021-06-12 17:14:31,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234696941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:31,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:31,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:14:31,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591825466] [2021-06-12 17:14:31,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:14:31,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:31,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:14:31,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:14:31,052 INFO L87 Difference]: Start difference. First operand 1798 states and 5630 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 17:14:31,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:31,134 INFO L93 Difference]: Finished difference Result 2268 states and 7051 transitions. [2021-06-12 17:14:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:14:31,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-06-12 17:14:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:31,138 INFO L225 Difference]: With dead ends: 2268 [2021-06-12 17:14:31,138 INFO L226 Difference]: Without dead ends: 1676 [2021-06-12 17:14:31,139 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:14:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-06-12 17:14:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2021-06-12 17:14:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1675 states have (on average 3.114626865671642) internal successors, (5217), 1675 states have internal predecessors, (5217), 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 17:14:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 5217 transitions. [2021-06-12 17:14:31,163 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 5217 transitions. Word has length 57 [2021-06-12 17:14:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:31,164 INFO L482 AbstractCegarLoop]: Abstraction has 1676 states and 5217 transitions. [2021-06-12 17:14:31,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 17:14:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 5217 transitions. [2021-06-12 17:14:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:14:31,167 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:31,167 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] [2021-06-12 17:14:31,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:14:31,167 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:31,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208255, now seen corresponding path program 1 times [2021-06-12 17:14:31,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:31,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793118947] [2021-06-12 17:14:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:31,257 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 17:14:31,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:31,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793118947] [2021-06-12 17:14:31,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793118947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:31,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:31,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:14:31,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485243497] [2021-06-12 17:14:31,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:14:31,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:31,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:14:31,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:14:31,261 INFO L87 Difference]: Start difference. First operand 1676 states and 5217 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 17:14:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:31,359 INFO L93 Difference]: Finished difference Result 1865 states and 5694 transitions. [2021-06-12 17:14:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:14:31,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-06-12 17:14:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:31,361 INFO L225 Difference]: With dead ends: 1865 [2021-06-12 17:14:31,362 INFO L226 Difference]: Without dead ends: 1361 [2021-06-12 17:14:31,363 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:14:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-06-12 17:14:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2021-06-12 17:14:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 3.0198529411764707) internal successors, (4107), 1360 states have internal predecessors, (4107), 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 17:14:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 4107 transitions. [2021-06-12 17:14:31,382 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 4107 transitions. Word has length 58 [2021-06-12 17:14:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:31,382 INFO L482 AbstractCegarLoop]: Abstraction has 1361 states and 4107 transitions. [2021-06-12 17:14:31,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 17:14:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 4107 transitions. [2021-06-12 17:14:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-12 17:14:31,385 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:31,385 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] [2021-06-12 17:14:31,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:14:31,385 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1317711448, now seen corresponding path program 1 times [2021-06-12 17:14:31,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:31,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831563005] [2021-06-12 17:14:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:31,457 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 17:14:31,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:31,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831563005] [2021-06-12 17:14:31,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831563005] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:31,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:31,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:14:31,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629793082] [2021-06-12 17:14:31,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:14:31,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:31,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:14:31,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:14:31,458 INFO L87 Difference]: Start difference. First operand 1361 states and 4107 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 17:14:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:31,570 INFO L93 Difference]: Finished difference Result 1199 states and 3504 transitions. [2021-06-12 17:14:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:14:31,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-06-12 17:14:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:31,572 INFO L225 Difference]: With dead ends: 1199 [2021-06-12 17:14:31,572 INFO L226 Difference]: Without dead ends: 875 [2021-06-12 17:14:31,572 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 89.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:14:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-06-12 17:14:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2021-06-12 17:14:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 2.845537757437071) internal successors, (2487), 874 states have internal predecessors, (2487), 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 17:14:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2487 transitions. [2021-06-12 17:14:31,584 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2487 transitions. Word has length 59 [2021-06-12 17:14:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:31,584 INFO L482 AbstractCegarLoop]: Abstraction has 875 states and 2487 transitions. [2021-06-12 17:14:31,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 17:14:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2487 transitions. [2021-06-12 17:14:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-12 17:14:31,585 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:14:31,585 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, 1] [2021-06-12 17:14:31,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 17:14:31,585 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:14:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:14:31,586 INFO L82 PathProgramCache]: Analyzing trace with hash 734848985, now seen corresponding path program 1 times [2021-06-12 17:14:31,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:14:31,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137701626] [2021-06-12 17:14:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:14:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:14:31,638 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 17:14:31,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:14:31,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137701626] [2021-06-12 17:14:31,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137701626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:14:31,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:14:31,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:14:31,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754039829] [2021-06-12 17:14:31,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:14:31,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:14:31,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:14:31,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:14:31,639 INFO L87 Difference]: Start difference. First operand 875 states and 2487 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 17:14:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:14:31,684 INFO L93 Difference]: Finished difference Result 821 states and 2325 transitions. [2021-06-12 17:14:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 17:14:31,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-06-12 17:14:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:14:31,684 INFO L225 Difference]: With dead ends: 821 [2021-06-12 17:14:31,685 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:14:31,685 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:14:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:14:31,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:14:31,685 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 17:14:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:14:31,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-12 17:14:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:14:31,685 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:14:31,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 17:14:31,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:14:31,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:14:31,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 17:14:31,687 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:14:31,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:14:31 BasicIcfg [2021-06-12 17:14:31,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:14:31,689 INFO L168 Benchmark]: Toolchain (without parser) took 4358.28 ms. Allocated memory was 199.2 MB in the beginning and 435.2 MB in the end (delta: 235.9 MB). Free memory was 161.8 MB in the beginning and 124.0 MB in the end (delta: 37.8 MB). Peak memory consumption was 274.6 MB. Max. memory is 8.0 GB. [2021-06-12 17:14:31,690 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 199.2 MB. Free memory is still 180.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:14:31,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.68 ms. Allocated memory is still 199.2 MB. Free memory was 161.7 MB in the beginning and 162.1 MB in the end (delta: -390.1 kB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2021-06-12 17:14:31,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.20 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 160.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:14:31,690 INFO L168 Benchmark]: Boogie Preprocessor took 12.69 ms. Allocated memory is still 199.2 MB. Free memory was 160.0 MB in the beginning and 158.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:14:31,690 INFO L168 Benchmark]: RCFGBuilder took 335.74 ms. Allocated memory is still 199.2 MB. Free memory was 158.4 MB in the beginning and 134.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:14:31,691 INFO L168 Benchmark]: TraceAbstraction took 3644.77 ms. Allocated memory was 199.2 MB in the beginning and 435.2 MB in the end (delta: 235.9 MB). Free memory was 134.3 MB in the beginning and 124.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 247.7 MB. Max. memory is 8.0 GB. [2021-06-12 17:14:31,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 199.2 MB. Free memory is still 180.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.68 ms. Allocated memory is still 199.2 MB. Free memory was 161.7 MB in the beginning and 162.1 MB in the end (delta: -390.1 kB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.20 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 160.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.69 ms. Allocated memory is still 199.2 MB. Free memory was 160.0 MB in the beginning and 158.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 335.74 ms. Allocated memory is still 199.2 MB. Free memory was 158.4 MB in the beginning and 134.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3644.77 ms. Allocated memory was 199.2 MB in the beginning and 435.2 MB in the end (delta: 235.9 MB). Free memory was 134.3 MB in the beginning and 124.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 247.7 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, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3576.3ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 107.7ms, AutomataDifference: 1450.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 325.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 943 SDtfs, 1327 SDslu, 3114 SDs, 0 SdLazy, 355 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 249.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1059.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 553.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 736 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.3ms SsaConstructionTime, 205.1ms SatisfiabilityAnalysisTime, 751.7ms InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 1648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...