/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:27:46,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:27:46,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:27:46,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:27:46,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:27:46,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:27:46,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:27:46,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:27:46,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:27:46,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:27:46,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:27:46,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:27:46,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:27:46,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:27:46,416 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:27:46,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:27:46,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:27:46,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:27:46,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:27:46,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:27:46,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:27:46,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:27:46,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:27:46,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:27:46,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:27:46,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:27:46,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:27:46,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:27:46,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:27:46,419 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:27:46,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:27:46,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:27:46,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:27:46,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:27:46,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:27:46,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:27:46,666 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:27:46,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-03-10 17:27:46,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634136c5e/48fa7fc0cedc4fbc82cb4d0a57332140/FLAG81826a469 [2021-03-10 17:27:47,174 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:27:47,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2021-03-10 17:27:47,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634136c5e/48fa7fc0cedc4fbc82cb4d0a57332140/FLAG81826a469 [2021-03-10 17:27:47,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634136c5e/48fa7fc0cedc4fbc82cb4d0a57332140 [2021-03-10 17:27:47,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:27:47,197 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:27:47,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:27:47,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:27:47,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:27:47,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aae2ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47, skipping insertion in model container [2021-03-10 17:27:47,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:27:47,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:27:47,320 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i[949,962] [2021-03-10 17:27:47,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:27:47,439 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:27:47,446 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i[949,962] [2021-03-10 17:27:47,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:27:47,517 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:27:47,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47 WrapperNode [2021-03-10 17:27:47,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:27:47,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:27:47,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:27:47,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:27:47,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:27:47,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:27:47,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:27:47,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:27:47,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (1/1) ... [2021-03-10 17:27:47,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:27:47,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:27:47,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:27:47,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:27:47,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (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 [2021-03-10 17:27:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:27:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:27:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:27:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:27:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:27:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:27:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:27:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:27:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:27:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:27:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:27:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:27:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:27:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:27:47,661 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:27:48,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:27:48,003 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:27:48,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:27:48 BoogieIcfgContainer [2021-03-10 17:27:48,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:27:48,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:27:48,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:27:48,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:27:48,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:27:47" (1/3) ... [2021-03-10 17:27:48,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133766d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:27:48, skipping insertion in model container [2021-03-10 17:27:48,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:47" (2/3) ... [2021-03-10 17:27:48,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133766d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:27:48, skipping insertion in model container [2021-03-10 17:27:48,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:27:48" (3/3) ... [2021-03-10 17:27:48,011 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2021-03-10 17:27:48,015 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:27:48,015 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:27:48,019 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:27:48,019 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:27:48,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,051 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,054 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,054 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,064 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,064 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:48,071 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:27:48,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:27:48,104 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:27:48,105 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:27:48,105 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:27:48,105 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:27:48,105 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:27:48,105 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:27:48,105 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:27:48,105 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:27:48,114 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-03-10 17:27:48,512 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-03-10 17:27:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-03-10 17:27:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:27:48,580 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:48,581 INFO L519 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] [2021-03-10 17:27:48,581 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1095445389, now seen corresponding path program 1 times [2021-03-10 17:27:48,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:48,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589386194] [2021-03-10 17:27:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:48,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589386194] [2021-03-10 17:27:48,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:48,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:27:48,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444994840] [2021-03-10 17:27:48,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:27:48,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:27:48,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:27:48,929 INFO L87 Difference]: Start difference. First operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-03-10 17:27:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:49,372 INFO L93 Difference]: Finished difference Result 17631 states and 60811 transitions. [2021-03-10 17:27:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:27:49,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 39 [2021-03-10 17:27:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:49,417 INFO L225 Difference]: With dead ends: 17631 [2021-03-10 17:27:49,417 INFO L226 Difference]: Without dead ends: 5489 [2021-03-10 17:27:49,418 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 228.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:49,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2021-03-10 17:27:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 4559. [2021-03-10 17:27:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4559 states, 4558 states have (on average 3.329530495831505) internal successors, (15176), 4558 states have internal predecessors, (15176), 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) [2021-03-10 17:27:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 15176 transitions. [2021-03-10 17:27:49,725 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 15176 transitions. Word has length 39 [2021-03-10 17:27:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:49,727 INFO L480 AbstractCegarLoop]: Abstraction has 4559 states and 15176 transitions. [2021-03-10 17:27:49,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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) [2021-03-10 17:27:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 15176 transitions. [2021-03-10 17:27:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 17:27:49,736 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:49,737 INFO L519 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] [2021-03-10 17:27:49,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:27:49,741 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:49,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:49,743 INFO L82 PathProgramCache]: Analyzing trace with hash -550942002, now seen corresponding path program 1 times [2021-03-10 17:27:49,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:49,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473595795] [2021-03-10 17:27:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:49,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473595795] [2021-03-10 17:27:49,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:49,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:27:49,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258748088] [2021-03-10 17:27:49,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:27:49,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:49,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:27:49,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:27:49,907 INFO L87 Difference]: Start difference. First operand 4559 states and 15176 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-03-10 17:27:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:50,153 INFO L93 Difference]: Finished difference Result 6839 states and 22501 transitions. [2021-03-10 17:27:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:27:50,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-03-10 17:27:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:50,177 INFO L225 Difference]: With dead ends: 6839 [2021-03-10 17:27:50,177 INFO L226 Difference]: Without dead ends: 5295 [2021-03-10 17:27:50,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 181.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2021-03-10 17:27:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 4317. [2021-03-10 17:27:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4317 states, 4316 states have (on average 3.309082483781279) internal successors, (14282), 4316 states have internal predecessors, (14282), 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) [2021-03-10 17:27:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 14282 transitions. [2021-03-10 17:27:50,296 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 14282 transitions. Word has length 41 [2021-03-10 17:27:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:50,296 INFO L480 AbstractCegarLoop]: Abstraction has 4317 states and 14282 transitions. [2021-03-10 17:27:50,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-03-10 17:27:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 14282 transitions. [2021-03-10 17:27:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:27:50,330 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:50,330 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:27:50,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:27:50,331 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1593234609, now seen corresponding path program 1 times [2021-03-10 17:27:50,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:50,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077380104] [2021-03-10 17:27:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:50,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077380104] [2021-03-10 17:27:50,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:50,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:27:50,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263875099] [2021-03-10 17:27:50,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:27:50,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:50,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:27:50,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:27:50,452 INFO L87 Difference]: Start difference. First operand 4317 states and 14282 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:50,628 INFO L93 Difference]: Finished difference Result 5977 states and 19537 transitions. [2021-03-10 17:27:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:27:50,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-03-10 17:27:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:50,658 INFO L225 Difference]: With dead ends: 5977 [2021-03-10 17:27:50,658 INFO L226 Difference]: Without dead ends: 4893 [2021-03-10 17:27:50,659 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2021-03-10 17:27:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 3873. [2021-03-10 17:27:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3873 states, 3872 states have (on average 3.290805785123967) internal successors, (12742), 3872 states have internal predecessors, (12742), 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) [2021-03-10 17:27:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 12742 transitions. [2021-03-10 17:27:50,783 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 12742 transitions. Word has length 43 [2021-03-10 17:27:50,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:50,783 INFO L480 AbstractCegarLoop]: Abstraction has 3873 states and 12742 transitions. [2021-03-10 17:27:50,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 12742 transitions. [2021-03-10 17:27:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:27:50,791 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:50,791 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:27:50,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:27:50,791 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:50,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1094749813, now seen corresponding path program 1 times [2021-03-10 17:27:50,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:50,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106363992] [2021-03-10 17:27:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:50,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106363992] [2021-03-10 17:27:50,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:50,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:27:50,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497431175] [2021-03-10 17:27:50,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:27:50,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:50,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:27:50,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:27:50,917 INFO L87 Difference]: Start difference. First operand 3873 states and 12742 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:51,084 INFO L93 Difference]: Finished difference Result 5551 states and 18034 transitions. [2021-03-10 17:27:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:27:51,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-03-10 17:27:51,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:51,094 INFO L225 Difference]: With dead ends: 5551 [2021-03-10 17:27:51,094 INFO L226 Difference]: Without dead ends: 2921 [2021-03-10 17:27:51,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-03-10 17:27:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2537. [2021-03-10 17:27:51,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2536 states have (on average 3.189274447949527) internal successors, (8088), 2536 states have internal predecessors, (8088), 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) [2021-03-10 17:27:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 8088 transitions. [2021-03-10 17:27:51,161 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 8088 transitions. Word has length 45 [2021-03-10 17:27:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:51,162 INFO L480 AbstractCegarLoop]: Abstraction has 2537 states and 8088 transitions. [2021-03-10 17:27:51,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 8088 transitions. [2021-03-10 17:27:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:27:51,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:51,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:27:51,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:27:51,167 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:51,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:51,167 INFO L82 PathProgramCache]: Analyzing trace with hash -408638060, now seen corresponding path program 1 times [2021-03-10 17:27:51,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:51,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414409727] [2021-03-10 17:27:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:51,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414409727] [2021-03-10 17:27:51,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:51,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:27:51,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918396489] [2021-03-10 17:27:51,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:27:51,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:51,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:27:51,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:27:51,267 INFO L87 Difference]: Start difference. First operand 2537 states and 8088 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:51,465 INFO L93 Difference]: Finished difference Result 3529 states and 11092 transitions. [2021-03-10 17:27:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:27:51,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-03-10 17:27:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:51,471 INFO L225 Difference]: With dead ends: 3529 [2021-03-10 17:27:51,471 INFO L226 Difference]: Without dead ends: 2873 [2021-03-10 17:27:51,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2021-03-10 17:27:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2389. [2021-03-10 17:27:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 2388 states have (on average 3.1729480737018427) internal successors, (7577), 2388 states have internal predecessors, (7577), 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) [2021-03-10 17:27:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 7577 transitions. [2021-03-10 17:27:51,519 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 7577 transitions. Word has length 46 [2021-03-10 17:27:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:51,520 INFO L480 AbstractCegarLoop]: Abstraction has 2389 states and 7577 transitions. [2021-03-10 17:27:51,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 7577 transitions. [2021-03-10 17:27:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:27:51,525 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:51,525 INFO L519 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] [2021-03-10 17:27:51,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:27:51,525 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:51,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:51,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1421608782, now seen corresponding path program 1 times [2021-03-10 17:27:51,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:51,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315414208] [2021-03-10 17:27:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:51,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315414208] [2021-03-10 17:27:51,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:51,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:27:51,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017816677] [2021-03-10 17:27:51,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:27:51,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:27:51,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:27:51,640 INFO L87 Difference]: Start difference. First operand 2389 states and 7577 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-03-10 17:27:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:51,724 INFO L93 Difference]: Finished difference Result 4181 states and 13209 transitions. [2021-03-10 17:27:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:27:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 47 [2021-03-10 17:27:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:51,731 INFO L225 Difference]: With dead ends: 4181 [2021-03-10 17:27:51,731 INFO L226 Difference]: Without dead ends: 2511 [2021-03-10 17:27:51,732 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:27:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-03-10 17:27:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2099. [2021-03-10 17:27:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 3.170638703527169) internal successors, (6652), 2098 states have internal predecessors, (6652), 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) [2021-03-10 17:27:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 6652 transitions. [2021-03-10 17:27:51,774 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 6652 transitions. Word has length 47 [2021-03-10 17:27:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:51,775 INFO L480 AbstractCegarLoop]: Abstraction has 2099 states and 6652 transitions. [2021-03-10 17:27:51,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-03-10 17:27:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 6652 transitions. [2021-03-10 17:27:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:27:51,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:51,779 INFO L519 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] [2021-03-10 17:27:51,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:27:51,779 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash -806082244, now seen corresponding path program 2 times [2021-03-10 17:27:51,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:51,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744838624] [2021-03-10 17:27:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:51,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744838624] [2021-03-10 17:27:51,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:51,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:27:51,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558945639] [2021-03-10 17:27:51,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:27:51,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:51,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:27:51,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:27:51,876 INFO L87 Difference]: Start difference. First operand 2099 states and 6652 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-03-10 17:27:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:51,959 INFO L93 Difference]: Finished difference Result 2531 states and 7908 transitions. [2021-03-10 17:27:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:27:51,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 47 [2021-03-10 17:27:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:51,962 INFO L225 Difference]: With dead ends: 2531 [2021-03-10 17:27:51,962 INFO L226 Difference]: Without dead ends: 1151 [2021-03-10 17:27:51,963 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:27:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-03-10 17:27:52,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2021-03-10 17:27:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 3.0095652173913043) internal successors, (3461), 1150 states have internal predecessors, (3461), 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) [2021-03-10 17:27:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 3461 transitions. [2021-03-10 17:27:52,004 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 3461 transitions. Word has length 47 [2021-03-10 17:27:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:52,004 INFO L480 AbstractCegarLoop]: Abstraction has 1151 states and 3461 transitions. [2021-03-10 17:27:52,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-03-10 17:27:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 3461 transitions. [2021-03-10 17:27:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:27:52,005 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:52,005 INFO L519 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] [2021-03-10 17:27:52,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:27:52,006 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:52,006 INFO L82 PathProgramCache]: Analyzing trace with hash -811822384, now seen corresponding path program 3 times [2021-03-10 17:27:52,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:52,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917099335] [2021-03-10 17:27:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:52,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917099335] [2021-03-10 17:27:52,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:52,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:27:52,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433277650] [2021-03-10 17:27:52,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:27:52,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:52,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:27:52,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:27:52,082 INFO L87 Difference]: Start difference. First operand 1151 states and 3461 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-03-10 17:27:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:52,160 INFO L93 Difference]: Finished difference Result 1352 states and 4012 transitions. [2021-03-10 17:27:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:27:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2021-03-10 17:27:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:52,163 INFO L225 Difference]: With dead ends: 1352 [2021-03-10 17:27:52,163 INFO L226 Difference]: Without dead ends: 1016 [2021-03-10 17:27:52,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:27:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-03-10 17:27:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2021-03-10 17:27:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 2.966502463054187) internal successors, (3011), 1015 states have internal predecessors, (3011), 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) [2021-03-10 17:27:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 3011 transitions. [2021-03-10 17:27:52,179 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 3011 transitions. Word has length 47 [2021-03-10 17:27:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:52,180 INFO L480 AbstractCegarLoop]: Abstraction has 1016 states and 3011 transitions. [2021-03-10 17:27:52,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-03-10 17:27:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 3011 transitions. [2021-03-10 17:27:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:27:52,181 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:52,181 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:27:52,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:27:52,181 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash -433300137, now seen corresponding path program 1 times [2021-03-10 17:27:52,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:52,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181117580] [2021-03-10 17:27:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:52,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181117580] [2021-03-10 17:27:52,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:52,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:27:52,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599377863] [2021-03-10 17:27:52,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:27:52,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:52,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:27:52,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:27:52,260 INFO L87 Difference]: Start difference. First operand 1016 states and 3011 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:52,340 INFO L93 Difference]: Finished difference Result 908 states and 2591 transitions. [2021-03-10 17:27:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:27:52,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-03-10 17:27:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:52,342 INFO L225 Difference]: With dead ends: 908 [2021-03-10 17:27:52,342 INFO L226 Difference]: Without dead ends: 656 [2021-03-10 17:27:52,342 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:27:52,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-10 17:27:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2021-03-10 17:27:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.787786259541985) internal successors, (1826), 655 states have internal predecessors, (1826), 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) [2021-03-10 17:27:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1826 transitions. [2021-03-10 17:27:52,352 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1826 transitions. Word has length 48 [2021-03-10 17:27:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:52,352 INFO L480 AbstractCegarLoop]: Abstraction has 656 states and 1826 transitions. [2021-03-10 17:27:52,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1826 transitions. [2021-03-10 17:27:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:27:52,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:52,353 INFO L519 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] [2021-03-10 17:27:52,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:27:52,353 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:52,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:52,354 INFO L82 PathProgramCache]: Analyzing trace with hash 412107084, now seen corresponding path program 1 times [2021-03-10 17:27:52,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:52,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230292500] [2021-03-10 17:27:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:52,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230292500] [2021-03-10 17:27:52,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:52,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:27:52,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617364358] [2021-03-10 17:27:52,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:27:52,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:52,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:27:52,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:27:52,430 INFO L87 Difference]: Start difference. First operand 656 states and 1826 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-03-10 17:27:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:52,485 INFO L93 Difference]: Finished difference Result 359 states and 935 transitions. [2021-03-10 17:27:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:27:52,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 [2021-03-10 17:27:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:52,486 INFO L225 Difference]: With dead ends: 359 [2021-03-10 17:27:52,486 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:27:52,486 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:27:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:27:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:27:52,487 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) [2021-03-10 17:27:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:27:52,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-03-10 17:27:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:52,489 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:27:52,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-03-10 17:27:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:27:52,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:27:52,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 17:27:52,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:27:52 BasicIcfg [2021-03-10 17:27:52,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:27:52,494 INFO L168 Benchmark]: Toolchain (without parser) took 5298.69 ms. Allocated memory was 323.0 MB in the beginning and 734.0 MB in the end (delta: 411.0 MB). Free memory was 286.2 MB in the beginning and 487.9 MB in the end (delta: -201.7 MB). Peak memory consumption was 212.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:52,494 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 323.0 MB. Free memory was 304.4 MB in the beginning and 304.3 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:27:52,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.31 ms. Allocated memory is still 323.0 MB. Free memory was 285.6 MB in the beginning and 285.9 MB in the end (delta: -281.4 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:52,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 323.0 MB. Free memory was 285.9 MB in the beginning and 283.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:52,496 INFO L168 Benchmark]: Boogie Preprocessor took 31.18 ms. Allocated memory is still 323.0 MB. Free memory was 283.7 MB in the beginning and 282.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:27:52,496 INFO L168 Benchmark]: RCFGBuilder took 407.50 ms. Allocated memory is still 323.0 MB. Free memory was 282.7 MB in the beginning and 258.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:52,497 INFO L168 Benchmark]: TraceAbstraction took 4486.57 ms. Allocated memory was 323.0 MB in the beginning and 734.0 MB in the end (delta: 411.0 MB). Free memory was 258.6 MB in the beginning and 487.9 MB in the end (delta: -229.3 MB). Peak memory consumption was 181.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:52,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 323.0 MB. Free memory was 304.4 MB in the beginning and 304.3 MB in the end (delta: 76.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 320.31 ms. Allocated memory is still 323.0 MB. Free memory was 285.6 MB in the beginning and 285.9 MB in the end (delta: -281.4 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 323.0 MB. Free memory was 285.9 MB in the beginning and 283.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.18 ms. Allocated memory is still 323.0 MB. Free memory was 283.7 MB in the beginning and 282.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 407.50 ms. Allocated memory is still 323.0 MB. Free memory was 282.7 MB in the beginning and 258.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4486.57 ms. Allocated memory was 323.0 MB in the beginning and 734.0 MB in the end (delta: 411.0 MB). Free memory was 258.6 MB in the beginning and 487.9 MB in the end (delta: -229.3 MB). Peak memory consumption was 181.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4387.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 132.7ms, AutomataDifference: 1803.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 407.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 962 SDtfs, 1519 SDslu, 3475 SDs, 0 SdLazy, 421 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 326.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1217.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=0, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 762.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 4208 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.9ms SsaConstructionTime, 170.6ms SatisfiabilityAnalysisTime, 907.8ms InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...