/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 00:16:43,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 00:16:43,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 00:16:43,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 00:16:43,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 00:16:43,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 00:16:43,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 00:16:43,377 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-Delay.epf [2021-07-14 00:16:43,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 00:16:43,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 00:16:43,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 00:16:43,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 00:16:43,393 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 00:16:43,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 00:16:43,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 00:16:43,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 00:16:43,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 00:16:43,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 00:16:43,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 00:16:43,395 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 00:16:43,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 00:16:43,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 00:16:43,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 00:16:43,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 00:16:43,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-14 00:16:43,662 INFO L275 PluginConnector]: CDTParser initialized [2021-07-14 00:16:43,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-07-14 00:16:43,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ad09e94/10ba49c118a84474980c0c3e44901fee/FLAG54eb551f3 [2021-07-14 00:16:44,086 INFO L306 CDTParser]: Found 1 translation units. [2021-07-14 00:16:44,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-07-14 00:16:44,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ad09e94/10ba49c118a84474980c0c3e44901fee/FLAG54eb551f3 [2021-07-14 00:16:44,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ad09e94/10ba49c118a84474980c0c3e44901fee [2021-07-14 00:16:44,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 00:16:44,448 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-14 00:16:44,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-14 00:16:44,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-14 00:16:44,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-14 00:16:44,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616c672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44, skipping insertion in model container [2021-07-14 00:16:44,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-14 00:16:44,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-14 00:16:44,604 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/safe005_tso.opt.i[949,962] [2021-07-14 00:16:44,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:16:44,762 INFO L203 MainTranslator]: Completed pre-run [2021-07-14 00:16:44,770 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/safe005_tso.opt.i[949,962] [2021-07-14 00:16:44,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:16:44,815 INFO L208 MainTranslator]: Completed translation [2021-07-14 00:16:44,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44 WrapperNode [2021-07-14 00:16:44,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-14 00:16:44,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 00:16:44,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 00:16:44,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 00:16:44,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 00:16:44,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 00:16:44,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 00:16:44,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 00:16:44,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (1/1) ... [2021-07-14 00:16:44,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 00:16:44,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 00:16:44,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 00:16:44,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 00:16:44,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (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 [2021-07-14 00:16:44,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-14 00:16:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-14 00:16:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-14 00:16:44,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-14 00:16:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-14 00:16:44,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-14 00:16:44,978 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-14 00:16:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-14 00:16:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-14 00:16:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-14 00:16:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-14 00:16:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-14 00:16:44,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 00:16:44,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 00:16:44,980 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 00:16:45,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 00:16:45,272 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-14 00:16:45,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:16:45 BoogieIcfgContainer [2021-07-14 00:16:45,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 00:16:45,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 00:16:45,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 00:16:45,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 00:16:45,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:16:44" (1/3) ... [2021-07-14 00:16:45,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110c25c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:16:45, skipping insertion in model container [2021-07-14 00:16:45,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:16:44" (2/3) ... [2021-07-14 00:16:45,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110c25c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:16:45, skipping insertion in model container [2021-07-14 00:16:45,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:16:45" (3/3) ... [2021-07-14 00:16:45,279 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2021-07-14 00:16:45,282 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 00:16:45,282 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 00:16:45,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 00:16:45,283 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 00:16:45,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,313 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,319 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,320 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,320 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,321 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:16:45,323 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 00:16:45,345 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-14 00:16:45,362 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 00:16:45,362 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 00:16:45,362 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 00:16:45,362 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 00:16:45,362 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 00:16:45,362 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 00:16:45,362 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 00:16:45,362 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 00:16:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 4768 states have (on average 2.1061241610738257) internal successors, (10042), 5558 states have internal predecessors, (10042), 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) [2021-07-14 00:16:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-14 00:16:45,777 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:45,778 INFO L508 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] [2021-07-14 00:16:45,778 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:45,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-07-14 00:16:45,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:45,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346456042] [2021-07-14 00:16:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:46,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:46,065 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:16:46,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:16:46,079 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:16:46,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:16:46,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:46,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:46,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:46,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:46,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346456042] [2021-07-14 00:16:46,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346456042] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:46,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:46,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:16:46,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464386302] [2021-07-14 00:16:46,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:16:46,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:16:46,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:16:46,133 INFO L87 Difference]: Start difference. First operand has 5559 states, 4768 states have (on average 2.1061241610738257) internal successors, (10042), 5558 states have internal predecessors, (10042), 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) [2021-07-14 00:16:46,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:46,396 INFO L93 Difference]: Finished difference Result 10568 states and 19635 transitions. [2021-07-14 00:16:46,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:16:46,399 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 [2021-07-14 00:16:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:46,441 INFO L225 Difference]: With dead ends: 10568 [2021-07-14 00:16:46,441 INFO L226 Difference]: Without dead ends: 3152 [2021-07-14 00:16:46,442 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:16:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2021-07-14 00:16:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 2151. [2021-07-14 00:16:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2116 states have (on average 2.2859168241965975) internal successors, (4837), 2150 states have internal predecessors, (4837), 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) [2021-07-14 00:16:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 4837 transitions. [2021-07-14 00:16:46,592 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 4837 transitions. Word has length 49 [2021-07-14 00:16:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:46,592 INFO L482 AbstractCegarLoop]: Abstraction has 2151 states and 4837 transitions. [2021-07-14 00:16:46,592 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) [2021-07-14 00:16:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 4837 transitions. [2021-07-14 00:16:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-14 00:16:46,595 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:46,595 INFO L508 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] [2021-07-14 00:16:46,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 00:16:46,596 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:46,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1726952767, now seen corresponding path program 1 times [2021-07-14 00:16:46,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:46,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054667913] [2021-07-14 00:16:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:46,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:46,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:46,716 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:16:46,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:16:46,728 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:16:46,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:16:46,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:46,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:46,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:46,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:46,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:46,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054667913] [2021-07-14 00:16:46,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054667913] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:46,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:46,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:16:46,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992630181] [2021-07-14 00:16:46,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:16:46,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:46,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:16:46,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:16:46,772 INFO L87 Difference]: Start difference. First operand 2151 states and 4837 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) [2021-07-14 00:16:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:46,975 INFO L93 Difference]: Finished difference Result 3402 states and 8440 transitions. [2021-07-14 00:16:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:16:46,975 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 [2021-07-14 00:16:46,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:46,984 INFO L225 Difference]: With dead ends: 3402 [2021-07-14 00:16:46,984 INFO L226 Difference]: Without dead ends: 2282 [2021-07-14 00:16:46,985 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 161.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:16:46,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2021-07-14 00:16:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1635. [2021-07-14 00:16:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1600 states have (on average 2.41875) internal successors, (3870), 1634 states have internal predecessors, (3870), 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) [2021-07-14 00:16:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 3870 transitions. [2021-07-14 00:16:47,021 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 3870 transitions. Word has length 51 [2021-07-14 00:16:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:47,021 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 3870 transitions. [2021-07-14 00:16:47,021 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) [2021-07-14 00:16:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 3870 transitions. [2021-07-14 00:16:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-14 00:16:47,025 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:47,025 INFO L508 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] [2021-07-14 00:16:47,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 00:16:47,025 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:47,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2000082914, now seen corresponding path program 1 times [2021-07-14 00:16:47,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:47,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941667186] [2021-07-14 00:16:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:47,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:47,098 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:16:47,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:16:47,106 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:16:47,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:16:47,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:47,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:47,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941667186] [2021-07-14 00:16:47,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941667186] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:47,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:47,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:16:47,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23860211] [2021-07-14 00:16:47,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:16:47,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:47,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:16:47,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:16:47,135 INFO L87 Difference]: Start difference. First operand 1635 states and 3870 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2021-07-14 00:16:47,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:47,285 INFO L93 Difference]: Finished difference Result 2349 states and 5708 transitions. [2021-07-14 00:16:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:16:47,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2021-07-14 00:16:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:47,291 INFO L225 Difference]: With dead ends: 2349 [2021-07-14 00:16:47,291 INFO L226 Difference]: Without dead ends: 1587 [2021-07-14 00:16:47,291 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:16:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2021-07-14 00:16:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1290. [2021-07-14 00:16:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1255 states have (on average 2.2717131474103587) internal successors, (2851), 1289 states have internal predecessors, (2851), 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) [2021-07-14 00:16:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 2851 transitions. [2021-07-14 00:16:47,314 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 2851 transitions. Word has length 53 [2021-07-14 00:16:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:47,314 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 2851 transitions. [2021-07-14 00:16:47,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2021-07-14 00:16:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 2851 transitions. [2021-07-14 00:16:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-14 00:16:47,315 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:47,316 INFO L508 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] [2021-07-14 00:16:47,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 00:16:47,316 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:47,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2048541138, now seen corresponding path program 1 times [2021-07-14 00:16:47,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:47,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399171984] [2021-07-14 00:16:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:47,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:47,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:47,359 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:16:47,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:16:47,371 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:16:47,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:16:47,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:47,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:47,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399171984] [2021-07-14 00:16:47,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399171984] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:47,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:47,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:16:47,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046455376] [2021-07-14 00:16:47,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:16:47,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:47,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:16:47,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:16:47,405 INFO L87 Difference]: Start difference. First operand 1290 states and 2851 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) [2021-07-14 00:16:47,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:47,485 INFO L93 Difference]: Finished difference Result 2184 states and 5088 transitions. [2021-07-14 00:16:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 00:16:47,486 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 [2021-07-14 00:16:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:47,490 INFO L225 Difference]: With dead ends: 2184 [2021-07-14 00:16:47,490 INFO L226 Difference]: Without dead ends: 1418 [2021-07-14 00:16:47,491 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.4ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-14 00:16:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2021-07-14 00:16:47,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1194. [2021-07-14 00:16:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1162 states have (on average 2.2753872633390704) internal successors, (2644), 1193 states have internal predecessors, (2644), 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) [2021-07-14 00:16:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 2644 transitions. [2021-07-14 00:16:47,520 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 2644 transitions. Word has length 54 [2021-07-14 00:16:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:47,520 INFO L482 AbstractCegarLoop]: Abstraction has 1194 states and 2644 transitions. [2021-07-14 00:16:47,520 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) [2021-07-14 00:16:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 2644 transitions. [2021-07-14 00:16:47,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-14 00:16:47,522 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:47,523 INFO L508 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] [2021-07-14 00:16:47,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 00:16:47,523 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:47,523 INFO L82 PathProgramCache]: Analyzing trace with hash -641170862, now seen corresponding path program 1 times [2021-07-14 00:16:47,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:47,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280083100] [2021-07-14 00:16:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:47,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:47,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:47,596 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:16:47,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:16:47,604 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:16:47,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:16:47,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:47,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:47,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280083100] [2021-07-14 00:16:47,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280083100] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:47,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:47,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:16:47,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036365110] [2021-07-14 00:16:47,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:16:47,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:16:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:16:47,638 INFO L87 Difference]: Start difference. First operand 1194 states and 2644 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-07-14 00:16:47,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:47,718 INFO L93 Difference]: Finished difference Result 2214 states and 5134 transitions. [2021-07-14 00:16:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 00:16:47,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2021-07-14 00:16:47,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:47,724 INFO L225 Difference]: With dead ends: 2214 [2021-07-14 00:16:47,724 INFO L226 Difference]: Without dead ends: 1406 [2021-07-14 00:16:47,724 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-14 00:16:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2021-07-14 00:16:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1158. [2021-07-14 00:16:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1126 states have (on average 2.294849023090586) internal successors, (2584), 1157 states have internal predecessors, (2584), 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) [2021-07-14 00:16:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2584 transitions. [2021-07-14 00:16:47,745 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2584 transitions. Word has length 55 [2021-07-14 00:16:47,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:47,746 INFO L482 AbstractCegarLoop]: Abstraction has 1158 states and 2584 transitions. [2021-07-14 00:16:47,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-07-14 00:16:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2584 transitions. [2021-07-14 00:16:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-14 00:16:47,747 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:47,747 INFO L508 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] [2021-07-14 00:16:47,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 00:16:47,748 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:47,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1927321332, now seen corresponding path program 2 times [2021-07-14 00:16:47,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:47,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417756572] [2021-07-14 00:16:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:47,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:47,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:47,790 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:16:47,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:16:47,798 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:16:47,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:16:47,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:47,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:47,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:47,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:47,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417756572] [2021-07-14 00:16:47,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417756572] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:47,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:47,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:16:47,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265509342] [2021-07-14 00:16:47,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:16:47,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:47,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:16:47,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:16:47,844 INFO L87 Difference]: Start difference. First operand 1158 states and 2584 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-07-14 00:16:47,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:47,969 INFO L93 Difference]: Finished difference Result 2334 states and 5580 transitions. [2021-07-14 00:16:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:16:47,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2021-07-14 00:16:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:47,974 INFO L225 Difference]: With dead ends: 2334 [2021-07-14 00:16:47,974 INFO L226 Difference]: Without dead ends: 1256 [2021-07-14 00:16:47,974 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-07-14 00:16:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-07-14 00:16:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 792. [2021-07-14 00:16:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 772 states have (on average 2.3290155440414506) internal successors, (1798), 791 states have internal predecessors, (1798), 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) [2021-07-14 00:16:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1798 transitions. [2021-07-14 00:16:47,992 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1798 transitions. Word has length 55 [2021-07-14 00:16:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:47,993 INFO L482 AbstractCegarLoop]: Abstraction has 792 states and 1798 transitions. [2021-07-14 00:16:47,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2021-07-14 00:16:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1798 transitions. [2021-07-14 00:16:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-14 00:16:47,995 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:47,995 INFO L508 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] [2021-07-14 00:16:47,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 00:16:47,995 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:47,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1993777945, now seen corresponding path program 1 times [2021-07-14 00:16:47,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:47,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650385855] [2021-07-14 00:16:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:48,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:48,055 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:16:48,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:16:48,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:16:48,078 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:16:48,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:48,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:48,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:48,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650385855] [2021-07-14 00:16:48,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650385855] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:48,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:48,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:16:48,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273552529] [2021-07-14 00:16:48,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:16:48,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:48,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:16:48,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:16:48,087 INFO L87 Difference]: Start difference. First operand 792 states and 1798 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) [2021-07-14 00:16:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:48,162 INFO L93 Difference]: Finished difference Result 1011 states and 2266 transitions. [2021-07-14 00:16:48,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:16:48,163 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 [2021-07-14 00:16:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:48,165 INFO L225 Difference]: With dead ends: 1011 [2021-07-14 00:16:48,165 INFO L226 Difference]: Without dead ends: 695 [2021-07-14 00:16:48,165 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:16:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-07-14 00:16:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2021-07-14 00:16:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 675 states have (on average 2.3703703703703702) internal successors, (1600), 694 states have internal predecessors, (1600), 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) [2021-07-14 00:16:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1600 transitions. [2021-07-14 00:16:48,177 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1600 transitions. Word has length 57 [2021-07-14 00:16:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:48,177 INFO L482 AbstractCegarLoop]: Abstraction has 695 states and 1600 transitions. [2021-07-14 00:16:48,177 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) [2021-07-14 00:16:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1600 transitions. [2021-07-14 00:16:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-14 00:16:48,178 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:48,178 INFO L508 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] [2021-07-14 00:16:48,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 00:16:48,178 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:48,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1109588926, now seen corresponding path program 1 times [2021-07-14 00:16:48,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:48,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768991509] [2021-07-14 00:16:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:48,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:48,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:48,227 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:16:48,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:16:48,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:16:48,246 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:16:48,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:48,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:48,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:48,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768991509] [2021-07-14 00:16:48,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768991509] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:48,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:48,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:16:48,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580481033] [2021-07-14 00:16:48,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:16:48,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:48,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:16:48,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:16:48,257 INFO L87 Difference]: Start difference. First operand 695 states and 1600 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) [2021-07-14 00:16:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:48,350 INFO L93 Difference]: Finished difference Result 698 states and 1534 transitions. [2021-07-14 00:16:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 00:16:48,351 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 [2021-07-14 00:16:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:48,352 INFO L225 Difference]: With dead ends: 698 [2021-07-14 00:16:48,352 INFO L226 Difference]: Without dead ends: 448 [2021-07-14 00:16:48,353 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-14 00:16:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-07-14 00:16:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-07-14 00:16:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 430 states have (on average 2.2674418604651163) internal successors, (975), 447 states have internal predecessors, (975), 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) [2021-07-14 00:16:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 975 transitions. [2021-07-14 00:16:48,365 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 975 transitions. Word has length 58 [2021-07-14 00:16:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:48,365 INFO L482 AbstractCegarLoop]: Abstraction has 448 states and 975 transitions. [2021-07-14 00:16:48,366 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) [2021-07-14 00:16:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 975 transitions. [2021-07-14 00:16:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-14 00:16:48,367 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:48,367 INFO L508 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] [2021-07-14 00:16:48,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 00:16:48,367 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:48,367 INFO L82 PathProgramCache]: Analyzing trace with hash -920172731, now seen corresponding path program 1 times [2021-07-14 00:16:48,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:48,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580193233] [2021-07-14 00:16:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:48,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:48,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:48,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:48,426 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:16:48,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:16:48,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:16:48,447 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:16:48,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:48,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:48,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:48,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580193233] [2021-07-14 00:16:48,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580193233] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:48,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:48,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:16:48,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229006994] [2021-07-14 00:16:48,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:16:48,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:16:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:16:48,458 INFO L87 Difference]: Start difference. First operand 448 states and 975 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) [2021-07-14 00:16:48,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:48,561 INFO L93 Difference]: Finished difference Result 340 states and 661 transitions. [2021-07-14 00:16:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 00:16:48,562 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 [2021-07-14 00:16:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:48,562 INFO L225 Difference]: With dead ends: 340 [2021-07-14 00:16:48,562 INFO L226 Difference]: Without dead ends: 223 [2021-07-14 00:16:48,563 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:16:48,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-07-14 00:16:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2021-07-14 00:16:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 210 states have (on average 1.819047619047619) internal successors, (382), 218 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 00:16:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 382 transitions. [2021-07-14 00:16:48,566 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 382 transitions. Word has length 59 [2021-07-14 00:16:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:48,566 INFO L482 AbstractCegarLoop]: Abstraction has 219 states and 382 transitions. [2021-07-14 00:16:48,566 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) [2021-07-14 00:16:48,567 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 382 transitions. [2021-07-14 00:16:48,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-14 00:16:48,568 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:16:48,568 INFO L508 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] [2021-07-14 00:16:48,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-14 00:16:48,568 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:16:48,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:16:48,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1399088966, now seen corresponding path program 1 times [2021-07-14 00:16:48,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:16:48,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303252348] [2021-07-14 00:16:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:16:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:16:48,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:16:48,622 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-07-14 00:16:48,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-07-14 00:16:48,632 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:16:48,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:16:48,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:48,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:16:48,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:16:48,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:16:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:16:48,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:16:48,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303252348] [2021-07-14 00:16:48,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303252348] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:16:48,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:16:48,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:16:48,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799690276] [2021-07-14 00:16:48,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:16:48,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:16:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:16:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:16:48,673 INFO L87 Difference]: Start difference. First operand 219 states and 382 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) [2021-07-14 00:16:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:16:48,768 INFO L93 Difference]: Finished difference Result 191 states and 336 transitions. [2021-07-14 00:16:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 00:16:48,769 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 [2021-07-14 00:16:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:16:48,769 INFO L225 Difference]: With dead ends: 191 [2021-07-14 00:16:48,769 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 00:16:48,769 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:16:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 00:16:48,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 00:16:48,770 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) [2021-07-14 00:16:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 00:16:48,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-07-14 00:16:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:16:48,770 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 00:16:48,770 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) [2021-07-14 00:16:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 00:16:48,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 00:16:48,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-14 00:16:48,772 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 00:16:48,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 12:16:48 BasicIcfg [2021-07-14 00:16:48,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 00:16:48,775 INFO L168 Benchmark]: Toolchain (without parser) took 4326.57 ms. Allocated memory was 127.9 MB in the beginning and 317.7 MB in the end (delta: 189.8 MB). Free memory was 91.5 MB in the beginning and 242.1 MB in the end (delta: -150.6 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2021-07-14 00:16:48,775 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 127.9 MB. Free memory was 109.5 MB in the beginning and 109.4 MB in the end (delta: 131.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 00:16:48,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.85 ms. Allocated memory was 127.9 MB in the beginning and 180.4 MB in the end (delta: 52.4 MB). Free memory was 91.3 MB in the beginning and 154.9 MB in the end (delta: -63.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-07-14 00:16:48,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.22 ms. Allocated memory is still 180.4 MB. Free memory was 154.5 MB in the beginning and 152.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 00:16:48,776 INFO L168 Benchmark]: Boogie Preprocessor took 26.53 ms. Allocated memory is still 180.4 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 00:16:48,776 INFO L168 Benchmark]: RCFGBuilder took 378.09 ms. Allocated memory is still 180.4 MB. Free memory was 151.4 MB in the beginning and 127.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-14 00:16:48,776 INFO L168 Benchmark]: TraceAbstraction took 3499.20 ms. Allocated memory was 180.4 MB in the beginning and 317.7 MB in the end (delta: 137.4 MB). Free memory was 127.7 MB in the beginning and 242.1 MB in the end (delta: -114.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. [2021-07-14 00:16:48,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 127.9 MB. Free memory was 109.5 MB in the beginning and 109.4 MB in the end (delta: 131.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 367.85 ms. Allocated memory was 127.9 MB in the beginning and 180.4 MB in the end (delta: 52.4 MB). Free memory was 91.3 MB in the beginning and 154.9 MB in the end (delta: -63.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.22 ms. Allocated memory is still 180.4 MB. Free memory was 154.5 MB in the beginning and 152.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.53 ms. Allocated memory is still 180.4 MB. Free memory was 152.8 MB in the beginning and 151.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.09 ms. Allocated memory is still 180.4 MB. Free memory was 151.4 MB in the beginning and 127.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3499.20 ms. Allocated memory was 180.4 MB in the beginning and 317.7 MB in the end (delta: 137.4 MB). Free memory was 127.7 MB in the beginning and 242.1 MB in the end (delta: -114.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18948, positive: 18049, positive conditional: 18049, positive unconditional: 0, negative: 899, negative conditional: 899, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18862, positive: 18049, positive conditional: 0, positive unconditional: 18049, negative: 813, negative conditional: 0, negative unconditional: 813, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 643, positive: 623, positive conditional: 0, positive unconditional: 623, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 643, positive: 620, positive conditional: 0, positive unconditional: 620, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 41, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18862, positive: 17426, positive conditional: 0, positive unconditional: 17426, negative: 793, negative conditional: 0, negative unconditional: 793, unknown: 643, unknown conditional: 0, unknown unconditional: 643] , Statistics on independence cache: Total cache size (in pairs): 643, Positive cache size: 623, Positive conditional cache size: 0, Positive unconditional cache size: 623, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Independence queries for same thread: 86 - 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: 3410.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 48.0ms, AutomataDifference: 1376.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 382.5ms, PartialOrderReductionTime: 372.2ms, HoareTripleCheckerStatistics: 948 SDtfs, 1361 SDslu, 3151 SDs, 0 SdLazy, 459 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 286.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1031.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 291.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2885 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.7ms SsaConstructionTime, 209.8ms SatisfiabilityAnalysisTime, 870.9ms InterpolantComputationTime, 552 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 542 ConstructedInterpolants, 0 QuantifiedInterpolants, 2050 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...