/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:52:05,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:52:05,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:52:05,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 18:52:05,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:52:05,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:52:05,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:52:05,673 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 [2021-07-13 18:52:05,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:52:05,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:52:05,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:52:05,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:52:05,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:52:05,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:52:05,702 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:52:05,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:52:05,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:52:05,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:52:05,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:52:05,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:52:05,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:52:05,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:52:05,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:52:05,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:52:05,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:52:05,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:52:05,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:52:05,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:52:05,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:52:05,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:52:05,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:52:05,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:52:05,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:52:05,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:52:05,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:52:05,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:52:05,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:52:05,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:52:05,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:52:05,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:52:05,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:52:06,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:52:06,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:52:06,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:52:06,006 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:52:06,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-07-13 18:52:06,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fd6177da/50fbfe4eaaee411689a0e7d791305eb9/FLAG6aca84fa1 [2021-07-13 18:52:06,516 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:52:06,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-07-13 18:52:06,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fd6177da/50fbfe4eaaee411689a0e7d791305eb9/FLAG6aca84fa1 [2021-07-13 18:52:06,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fd6177da/50fbfe4eaaee411689a0e7d791305eb9 [2021-07-13 18:52:06,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:52:06,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:52:06,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:52:06,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:52:06,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:52:06,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:52:06" (1/1) ... [2021-07-13 18:52:06,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f4e87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:06, skipping insertion in model container [2021-07-13 18:52:06,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:52:06" (1/1) ... [2021-07-13 18:52:06,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:52:06,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:52:07,116 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i[949,962] [2021-07-13 18:52:07,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:52:07,251 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:52:07,259 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i[949,962] [2021-07-13 18:52:07,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:52:07,319 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:52:07,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07 WrapperNode [2021-07-13 18:52:07,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:52:07,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:52:07,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:52:07,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:52:07,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:52:07,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:52:07,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:52:07,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:52:07,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:52:07,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:52:07,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:52:07,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:52:07,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:52:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:52:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:52:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:52:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:52:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-13 18:52:07,451 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-13 18:52:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-13 18:52:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-13 18:52:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-13 18:52:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-13 18:52:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:52:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:52:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:52:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:52:07,453 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:52:07,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:52:07,746 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-13 18:52:07,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:52:07 BoogieIcfgContainer [2021-07-13 18:52:07,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:52:07,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:52:07,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:52:07,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:52:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:52:06" (1/3) ... [2021-07-13 18:52:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d79a5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:52:07, skipping insertion in model container [2021-07-13 18:52:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07" (2/3) ... [2021-07-13 18:52:07,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d79a5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:52:07, skipping insertion in model container [2021-07-13 18:52:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:52:07" (3/3) ... [2021-07-13 18:52:07,756 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2021-07-13 18:52:07,761 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:52:07,761 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:52:07,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 18:52:07,762 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:52:07,787 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,787 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,787 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,787 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,788 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,788 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,788 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,797 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,798 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,799 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,801 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,801 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,801 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,801 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:07,812 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 18:52:07,826 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 18:52:07,844 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:52:07,845 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:52:07,845 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:52:07,845 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:52:07,845 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:52:07,845 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:52:07,845 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:52:07,845 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:52:07,855 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-07-13 18:52:07,989 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-13 18:52:08,032 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:08,033 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:08,033 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:08,037 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-07-13 18:52:08,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:08,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103128682] [2021-07-13 18:52:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:08,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:08,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103128682] [2021-07-13 18:52:08,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103128682] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:08,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:08,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:52:08,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704587366] [2021-07-13 18:52:08,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:52:08,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:08,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:52:08,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:52:08,446 INFO L87 Difference]: Start difference. First operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:08,896 INFO L93 Difference]: Finished difference Result 9288 states and 31383 transitions. [2021-07-13 18:52:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:52:08,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-07-13 18:52:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:08,947 INFO L225 Difference]: With dead ends: 9288 [2021-07-13 18:52:08,947 INFO L226 Difference]: Without dead ends: 6158 [2021-07-13 18:52:08,948 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 276.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:52:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2021-07-13 18:52:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 5228. [2021-07-13 18:52:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 3.365601683566099) internal successors, (17592), 5227 states have internal predecessors, (17592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 17592 transitions. [2021-07-13 18:52:09,292 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 17592 transitions. Word has length 49 [2021-07-13 18:52:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:09,295 INFO L482 AbstractCegarLoop]: Abstraction has 5228 states and 17592 transitions. [2021-07-13 18:52:09,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:09,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 17592 transitions. [2021-07-13 18:52:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-13 18:52:09,312 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:09,312 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:09,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:52:09,312 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:09,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1915177392, now seen corresponding path program 1 times [2021-07-13 18:52:09,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:09,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317390107] [2021-07-13 18:52:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:09,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:09,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317390107] [2021-07-13 18:52:09,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317390107] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:09,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:09,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:52:09,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297378294] [2021-07-13 18:52:09,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:52:09,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:09,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:52:09,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:52:09,465 INFO L87 Difference]: Start difference. First operand 5228 states and 17592 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:09,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:09,647 INFO L93 Difference]: Finished difference Result 5788 states and 19325 transitions. [2021-07-13 18:52:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:09,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-07-13 18:52:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:09,695 INFO L225 Difference]: With dead ends: 5788 [2021-07-13 18:52:09,696 INFO L226 Difference]: Without dead ends: 4808 [2021-07-13 18:52:09,696 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:52:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2021-07-13 18:52:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4728. [2021-07-13 18:52:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 4727 states have (on average 3.3344616035540513) internal successors, (15762), 4727 states have internal predecessors, (15762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 15762 transitions. [2021-07-13 18:52:09,838 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 15762 transitions. Word has length 51 [2021-07-13 18:52:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:09,838 INFO L482 AbstractCegarLoop]: Abstraction has 4728 states and 15762 transitions. [2021-07-13 18:52:09,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 15762 transitions. [2021-07-13 18:52:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-13 18:52:09,848 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:09,848 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:09,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:52:09,848 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash 648908657, now seen corresponding path program 1 times [2021-07-13 18:52:09,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:09,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497558052] [2021-07-13 18:52:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:09,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:09,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497558052] [2021-07-13 18:52:09,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497558052] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:09,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:09,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:52:09,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753990287] [2021-07-13 18:52:09,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:52:09,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:09,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:52:09,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:52:09,967 INFO L87 Difference]: Start difference. First operand 4728 states and 15762 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:10,105 INFO L93 Difference]: Finished difference Result 6778 states and 22300 transitions. [2021-07-13 18:52:10,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:52:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-07-13 18:52:10,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:10,120 INFO L225 Difference]: With dead ends: 6778 [2021-07-13 18:52:10,120 INFO L226 Difference]: Without dead ends: 3318 [2021-07-13 18:52:10,120 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:52:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2021-07-13 18:52:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 2910. [2021-07-13 18:52:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2909 states have (on average 3.23066345823307) internal successors, (9398), 2909 states have internal predecessors, (9398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 9398 transitions. [2021-07-13 18:52:10,188 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 9398 transitions. Word has length 53 [2021-07-13 18:52:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:10,189 INFO L482 AbstractCegarLoop]: Abstraction has 2910 states and 9398 transitions. [2021-07-13 18:52:10,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 9398 transitions. [2021-07-13 18:52:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:52:10,193 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:10,194 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:10,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:52:10,194 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2103032967, now seen corresponding path program 1 times [2021-07-13 18:52:10,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:10,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141475538] [2021-07-13 18:52:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:10,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:10,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141475538] [2021-07-13 18:52:10,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141475538] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:10,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:10,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:52:10,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526833577] [2021-07-13 18:52:10,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:52:10,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:10,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:52:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:52:10,306 INFO L87 Difference]: Start difference. First operand 2910 states and 9398 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:10,466 INFO L93 Difference]: Finished difference Result 3950 states and 12592 transitions. [2021-07-13 18:52:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:52:10,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-13 18:52:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:10,475 INFO L225 Difference]: With dead ends: 3950 [2021-07-13 18:52:10,475 INFO L226 Difference]: Without dead ends: 3134 [2021-07-13 18:52:10,476 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:52:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-07-13 18:52:10,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2670. [2021-07-13 18:52:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2669 states have (on average 3.2139378044211315) internal successors, (8578), 2669 states have internal predecessors, (8578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 8578 transitions. [2021-07-13 18:52:10,526 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 8578 transitions. Word has length 54 [2021-07-13 18:52:10,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:10,527 INFO L482 AbstractCegarLoop]: Abstraction has 2670 states and 8578 transitions. [2021-07-13 18:52:10,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 8578 transitions. [2021-07-13 18:52:10,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-13 18:52:10,531 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:10,531 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:10,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:52:10,531 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:10,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1497416024, now seen corresponding path program 1 times [2021-07-13 18:52:10,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:10,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099753810] [2021-07-13 18:52:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:10,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:10,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099753810] [2021-07-13 18:52:10,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099753810] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:10,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:10,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:52:10,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710427676] [2021-07-13 18:52:10,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:52:10,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:10,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:52:10,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:52:10,589 INFO L87 Difference]: Start difference. First operand 2670 states and 8578 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:10,696 INFO L93 Difference]: Finished difference Result 2950 states and 9412 transitions. [2021-07-13 18:52:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:10,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-07-13 18:52:10,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:10,703 INFO L225 Difference]: With dead ends: 2950 [2021-07-13 18:52:10,703 INFO L226 Difference]: Without dead ends: 2550 [2021-07-13 18:52:10,703 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:52:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-07-13 18:52:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2518. [2021-07-13 18:52:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2517 states have (on average 3.199046483909416) internal successors, (8052), 2517 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 8052 transitions. [2021-07-13 18:52:10,746 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 8052 transitions. Word has length 56 [2021-07-13 18:52:10,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:10,746 INFO L482 AbstractCegarLoop]: Abstraction has 2518 states and 8052 transitions. [2021-07-13 18:52:10,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 8052 transitions. [2021-07-13 18:52:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-13 18:52:10,751 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:10,751 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:10,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:52:10,751 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:10,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:10,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1506580816, now seen corresponding path program 1 times [2021-07-13 18:52:10,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:10,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15678028] [2021-07-13 18:52:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:10,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:10,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15678028] [2021-07-13 18:52:10,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15678028] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:10,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:10,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:52:10,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602674386] [2021-07-13 18:52:10,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:52:10,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:10,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:52:10,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:52:10,810 INFO L87 Difference]: Start difference. First operand 2518 states and 8052 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:10,897 INFO L93 Difference]: Finished difference Result 3258 states and 10287 transitions. [2021-07-13 18:52:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:10,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-13 18:52:10,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:10,903 INFO L225 Difference]: With dead ends: 3258 [2021-07-13 18:52:10,903 INFO L226 Difference]: Without dead ends: 2306 [2021-07-13 18:52:10,903 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:52:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-07-13 18:52:10,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2021-07-13 18:52:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 3.1535791757049894) internal successors, (7269), 2305 states have internal predecessors, (7269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 7269 transitions. [2021-07-13 18:52:10,942 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 7269 transitions. Word has length 57 [2021-07-13 18:52:10,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:10,942 INFO L482 AbstractCegarLoop]: Abstraction has 2306 states and 7269 transitions. [2021-07-13 18:52:10,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 7269 transitions. [2021-07-13 18:52:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-13 18:52:10,946 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:10,946 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:10,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:52:10,946 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash -208209097, now seen corresponding path program 1 times [2021-07-13 18:52:10,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:10,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308155622] [2021-07-13 18:52:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:11,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:11,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308155622] [2021-07-13 18:52:11,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308155622] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:11,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:11,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:52:11,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049973689] [2021-07-13 18:52:11,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:52:11,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:11,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:52:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:52:11,045 INFO L87 Difference]: Start difference. First operand 2306 states and 7269 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:11,164 INFO L93 Difference]: Finished difference Result 2558 states and 7884 transitions. [2021-07-13 18:52:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:52:11,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-07-13 18:52:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:11,169 INFO L225 Difference]: With dead ends: 2558 [2021-07-13 18:52:11,169 INFO L226 Difference]: Without dead ends: 1766 [2021-07-13 18:52:11,169 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:52:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2021-07-13 18:52:11,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1766. [2021-07-13 18:52:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1765 states have (on average 3.0390934844192636) internal successors, (5364), 1765 states have internal predecessors, (5364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 5364 transitions. [2021-07-13 18:52:11,202 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 5364 transitions. Word has length 58 [2021-07-13 18:52:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:11,202 INFO L482 AbstractCegarLoop]: Abstraction has 1766 states and 5364 transitions. [2021-07-13 18:52:11,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 5364 transitions. [2021-07-13 18:52:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-13 18:52:11,205 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:11,205 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:11,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:52:11,206 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:11,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:11,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1700256690, now seen corresponding path program 1 times [2021-07-13 18:52:11,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:11,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835560228] [2021-07-13 18:52:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:11,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:11,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835560228] [2021-07-13 18:52:11,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835560228] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:11,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:11,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:52:11,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268927688] [2021-07-13 18:52:11,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:52:11,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:11,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:52:11,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:52:11,275 INFO L87 Difference]: Start difference. First operand 1766 states and 5364 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:11,404 INFO L93 Difference]: Finished difference Result 1577 states and 4680 transitions. [2021-07-13 18:52:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:52:11,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-07-13 18:52:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:11,407 INFO L225 Difference]: With dead ends: 1577 [2021-07-13 18:52:11,407 INFO L226 Difference]: Without dead ends: 873 [2021-07-13 18:52:11,408 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:52:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-07-13 18:52:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2021-07-13 18:52:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 2.897935779816514) internal successors, (2527), 872 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 2527 transitions. [2021-07-13 18:52:11,424 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 2527 transitions. Word has length 59 [2021-07-13 18:52:11,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:11,424 INFO L482 AbstractCegarLoop]: Abstraction has 873 states and 2527 transitions. [2021-07-13 18:52:11,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 2527 transitions. [2021-07-13 18:52:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-13 18:52:11,426 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:11,426 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:11,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:52:11,427 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:11,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1933236789, now seen corresponding path program 1 times [2021-07-13 18:52:11,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:11,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729336120] [2021-07-13 18:52:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:11,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:11,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729336120] [2021-07-13 18:52:11,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729336120] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:11,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:11,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:52:11,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615875452] [2021-07-13 18:52:11,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:52:11,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:11,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:52:11,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:52:11,500 INFO L87 Difference]: Start difference. First operand 873 states and 2527 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:11,572 INFO L93 Difference]: Finished difference Result 1356 states and 3968 transitions. [2021-07-13 18:52:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-07-13 18:52:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:11,574 INFO L225 Difference]: With dead ends: 1356 [2021-07-13 18:52:11,574 INFO L226 Difference]: Without dead ends: 805 [2021-07-13 18:52:11,575 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:52:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-07-13 18:52:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2021-07-13 18:52:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.8756218905472637) internal successors, (2312), 804 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2312 transitions. [2021-07-13 18:52:11,588 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2312 transitions. Word has length 61 [2021-07-13 18:52:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:11,588 INFO L482 AbstractCegarLoop]: Abstraction has 805 states and 2312 transitions. [2021-07-13 18:52:11,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2312 transitions. [2021-07-13 18:52:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-13 18:52:11,590 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:11,590 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:52:11,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 18:52:11,590 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash -805959549, now seen corresponding path program 2 times [2021-07-13 18:52:11,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:11,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672872048] [2021-07-13 18:52:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:11,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:11,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672872048] [2021-07-13 18:52:11,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672872048] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:11,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:11,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:52:11,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074256667] [2021-07-13 18:52:11,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:52:11,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:11,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:52:11,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:52:11,664 INFO L87 Difference]: Start difference. First operand 805 states and 2312 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:11,719 INFO L93 Difference]: Finished difference Result 751 states and 2150 transitions. [2021-07-13 18:52:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 18:52:11,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-07-13 18:52:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:11,719 INFO L225 Difference]: With dead ends: 751 [2021-07-13 18:52:11,719 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:52:11,720 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:52:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:52:11,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:52:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:52:11,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-07-13 18:52:11,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:11,721 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:52:11,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:52:11,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:52:11,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 18:52:11,723 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:52:11,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:52:11 BasicIcfg [2021-07-13 18:52:11,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:52:11,725 INFO L168 Benchmark]: Toolchain (without parser) took 4860.32 ms. Allocated memory was 186.6 MB in the beginning and 638.6 MB in the end (delta: 451.9 MB). Free memory was 148.3 MB in the beginning and 327.0 MB in the end (delta: -178.7 MB). Peak memory consumption was 274.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:11,725 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 166.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:52:11,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.03 ms. Allocated memory is still 186.6 MB. Free memory was 148.1 MB in the beginning and 159.1 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:11,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.01 ms. Allocated memory is still 186.6 MB. Free memory was 159.1 MB in the beginning and 157.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:11,726 INFO L168 Benchmark]: Boogie Preprocessor took 32.01 ms. Allocated memory is still 186.6 MB. Free memory was 157.0 MB in the beginning and 156.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:11,726 INFO L168 Benchmark]: RCFGBuilder took 352.70 ms. Allocated memory is still 186.6 MB. Free memory was 156.0 MB in the beginning and 131.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:11,726 INFO L168 Benchmark]: TraceAbstraction took 3975.74 ms. Allocated memory was 186.6 MB in the beginning and 638.6 MB in the end (delta: 451.9 MB). Free memory was 131.3 MB in the beginning and 327.0 MB in the end (delta: -195.6 MB). Peak memory consumption was 256.9 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:11,727 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 186.6 MB. Free memory is still 166.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 451.03 ms. Allocated memory is still 186.6 MB. Free memory was 148.1 MB in the beginning and 159.1 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.01 ms. Allocated memory is still 186.6 MB. Free memory was 159.1 MB in the beginning and 157.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.01 ms. Allocated memory is still 186.6 MB. Free memory was 157.0 MB in the beginning and 156.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 352.70 ms. Allocated memory is still 186.6 MB. Free memory was 156.0 MB in the beginning and 131.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3975.74 ms. Allocated memory was 186.6 MB in the beginning and 638.6 MB in the end (delta: 451.9 MB). Free memory was 131.3 MB in the beginning and 327.0 MB in the end (delta: -195.6 MB). Peak memory consumption was 256.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3878.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 89.3ms, AutomataDifference: 1687.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 143.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1034 SDtfs, 1584 SDslu, 3512 SDs, 0 SdLazy, 434 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 272.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1123.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 102, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 738.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1914 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 143.8ms SatisfiabilityAnalysisTime, 790.5ms InterpolantComputationTime, 559 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 2281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...