/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/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:55:02,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:55:02,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:55:02,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 18:55:02,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:55:02,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:55:02,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:55:02,474 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 18:55:02,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:55:02,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:55:02,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:55:02,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:55:02,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:55:02,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:55:02,515 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:55:02,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:55:02,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:55:02,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:55:02,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:55:02,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:55:02,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:55:02,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:55:02,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:55:02,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:55:02,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:55:02,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:55:02,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:55:02,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:55:02,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:55:02,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:55:02,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:55:02,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:55:02,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:55:02,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:55:02,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:55:02,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:55:02,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:55:02,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:55:02,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:55:02,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:55:02,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:55:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:55:02,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:55:02,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:55:02,857 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:55:02,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2021-07-13 18:55:02,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd2b439e/5025fb4775664c6bbda59a19549e5df1/FLAGd0675fc5a [2021-07-13 18:55:03,462 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:55:03,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2021-07-13 18:55:03,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd2b439e/5025fb4775664c6bbda59a19549e5df1/FLAGd0675fc5a [2021-07-13 18:55:03,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd2b439e/5025fb4775664c6bbda59a19549e5df1 [2021-07-13 18:55:03,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:55:03,800 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:55:03,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:55:03,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:55:03,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:55:03,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:55:03" (1/1) ... [2021-07-13 18:55:03,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a17f083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:03, skipping insertion in model container [2021-07-13 18:55:03,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:55:03" (1/1) ... [2021-07-13 18:55:03,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:55:03,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:55:04,154 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/safe035_tso.oepc.i[950,963] [2021-07-13 18:55:04,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:55:04,360 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:55:04,372 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/safe035_tso.oepc.i[950,963] [2021-07-13 18:55:04,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:55:04,445 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:55:04,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04 WrapperNode [2021-07-13 18:55:04,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:55:04,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:55:04,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:55:04,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:55:04,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:55:04,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:55:04,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:55:04,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:55:04,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (1/1) ... [2021-07-13 18:55:04,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:55:04,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:55:04,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:55:04,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:55:04,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (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 18:55:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:55:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:55:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:55:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:55:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-13 18:55:04,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-13 18:55:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-13 18:55:04,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-13 18:55:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-13 18:55:04,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-13 18:55:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:55:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:55:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:55:04,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:55:04,629 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 18:55:05,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:55:05,067 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-13 18:55:05,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:55:05 BoogieIcfgContainer [2021-07-13 18:55:05,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:55:05,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:55:05,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:55:05,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:55:05,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:55:03" (1/3) ... [2021-07-13 18:55:05,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be13b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:55:05, skipping insertion in model container [2021-07-13 18:55:05,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:04" (2/3) ... [2021-07-13 18:55:05,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be13b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:55:05, skipping insertion in model container [2021-07-13 18:55:05,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:55:05" (3/3) ... [2021-07-13 18:55:05,079 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2021-07-13 18:55:05,084 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:55:05,084 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:55:05,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 18:55:05,085 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:55:05,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,124 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,129 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,130 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,130 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,132 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,133 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,135 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,135 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,135 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,135 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,143 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,143 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:05,147 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 18:55:05,167 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 18:55:05,193 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:55:05,194 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:55:05,194 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:55:05,194 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:55:05,194 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:55:05,194 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:55:05,194 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:55:05,194 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:55:05,210 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-07-13 18:55:05,401 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 18:55:05,425 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 18:55:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-13 18:55:05,454 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:05,454 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 18:55:05,455 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:05,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:05,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1593178653, now seen corresponding path program 1 times [2021-07-13 18:55:05,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:05,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367946695] [2021-07-13 18:55:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:05,948 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 18:55:05,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:05,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367946695] [2021-07-13 18:55:05,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367946695] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:05,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:05,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:55:05,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523869912] [2021-07-13 18:55:05,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:55:05,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:55:05,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:55:06,004 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 18:55:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:06,522 INFO L93 Difference]: Finished difference Result 8013 states and 26913 transitions. [2021-07-13 18:55:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:55:06,523 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 18:55:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:06,566 INFO L225 Difference]: With dead ends: 8013 [2021-07-13 18:55:06,566 INFO L226 Difference]: Without dead ends: 3806 [2021-07-13 18:55:06,568 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 234.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:55:06,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-07-13 18:55:06,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3326. [2021-07-13 18:55:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 3.2754887218045114) internal successors, (10891), 3325 states have internal predecessors, (10891), 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 18:55:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 10891 transitions. [2021-07-13 18:55:06,796 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 10891 transitions. Word has length 49 [2021-07-13 18:55:06,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:06,797 INFO L482 AbstractCegarLoop]: Abstraction has 3326 states and 10891 transitions. [2021-07-13 18:55:06,797 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 18:55:06,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 10891 transitions. [2021-07-13 18:55:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:55:06,807 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:06,807 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 18:55:06,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:55:06,808 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash 792894823, now seen corresponding path program 1 times [2021-07-13 18:55:06,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:06,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952815362] [2021-07-13 18:55:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:06,935 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 18:55:06,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:06,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952815362] [2021-07-13 18:55:06,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952815362] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:06,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:06,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:55:06,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82744976] [2021-07-13 18:55:06,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:55:06,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:06,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:55:06,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:55:06,946 INFO L87 Difference]: Start difference. First operand 3326 states and 10891 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 18:55:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:07,124 INFO L93 Difference]: Finished difference Result 4146 states and 13357 transitions. [2021-07-13 18:55:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:55:07,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 18:55:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:07,147 INFO L225 Difference]: With dead ends: 4146 [2021-07-13 18:55:07,148 INFO L226 Difference]: Without dead ends: 2998 [2021-07-13 18:55:07,148 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:55:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-07-13 18:55:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2998. [2021-07-13 18:55:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2997 states have (on average 3.2178845512178844) internal successors, (9644), 2997 states have internal predecessors, (9644), 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 18:55:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 9644 transitions. [2021-07-13 18:55:07,290 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 9644 transitions. Word has length 54 [2021-07-13 18:55:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:07,290 INFO L482 AbstractCegarLoop]: Abstraction has 2998 states and 9644 transitions. [2021-07-13 18:55:07,290 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 18:55:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 9644 transitions. [2021-07-13 18:55:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:55:07,300 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:07,300 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:07,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:55:07,301 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:07,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:07,308 INFO L82 PathProgramCache]: Analyzing trace with hash -173034250, now seen corresponding path program 1 times [2021-07-13 18:55:07,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:07,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390454880] [2021-07-13 18:55:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:07,467 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 18:55:07,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:07,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390454880] [2021-07-13 18:55:07,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390454880] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:07,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:07,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:55:07,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149276821] [2021-07-13 18:55:07,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:55:07,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:55:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:55:07,471 INFO L87 Difference]: Start difference. First operand 2998 states and 9644 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:07,659 INFO L93 Difference]: Finished difference Result 3100 states and 9688 transitions. [2021-07-13 18:55:07,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:55:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:55:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:07,672 INFO L225 Difference]: With dead ends: 3100 [2021-07-13 18:55:07,673 INFO L226 Difference]: Without dead ends: 2176 [2021-07-13 18:55:07,673 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:55:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-07-13 18:55:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2140. [2021-07-13 18:55:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 3.0771388499298737) internal successors, (6582), 2139 states have internal predecessors, (6582), 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 18:55:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 6582 transitions. [2021-07-13 18:55:07,737 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 6582 transitions. Word has length 55 [2021-07-13 18:55:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:07,739 INFO L482 AbstractCegarLoop]: Abstraction has 2140 states and 6582 transitions. [2021-07-13 18:55:07,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 6582 transitions. [2021-07-13 18:55:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-13 18:55:07,745 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:07,745 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 18:55:07,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:55:07,745 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2002222771, now seen corresponding path program 1 times [2021-07-13 18:55:07,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:07,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265200645] [2021-07-13 18:55:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:07,903 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 18:55:07,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:07,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265200645] [2021-07-13 18:55:07,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265200645] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:07,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:07,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:55:07,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193193599] [2021-07-13 18:55:07,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:55:07,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:07,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:55:07,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:55:07,905 INFO L87 Difference]: Start difference. First operand 2140 states and 6582 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 18:55:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:08,098 INFO L93 Difference]: Finished difference Result 1780 states and 5328 transitions. [2021-07-13 18:55:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:55:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 18:55:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:08,105 INFO L225 Difference]: With dead ends: 1780 [2021-07-13 18:55:08,106 INFO L226 Difference]: Without dead ends: 1168 [2021-07-13 18:55:08,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:55:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-07-13 18:55:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1120. [2021-07-13 18:55:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 2.9231456657730117) internal successors, (3271), 1119 states have internal predecessors, (3271), 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 18:55:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3271 transitions. [2021-07-13 18:55:08,137 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3271 transitions. Word has length 57 [2021-07-13 18:55:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:08,139 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 3271 transitions. [2021-07-13 18:55:08,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 18:55:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3271 transitions. [2021-07-13 18:55:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-13 18:55:08,143 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:08,144 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 18:55:08,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:55:08,144 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:08,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:08,147 INFO L82 PathProgramCache]: Analyzing trace with hash -278000879, now seen corresponding path program 1 times [2021-07-13 18:55:08,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:08,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520229119] [2021-07-13 18:55:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:08,294 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 18:55:08,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:08,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520229119] [2021-07-13 18:55:08,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520229119] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:08,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:08,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:55:08,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580302374] [2021-07-13 18:55:08,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:55:08,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:55:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:55:08,298 INFO L87 Difference]: Start difference. First operand 1120 states and 3271 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:08,417 INFO L93 Difference]: Finished difference Result 1223 states and 3508 transitions. [2021-07-13 18:55:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 18:55:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-07-13 18:55:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:08,418 INFO L225 Difference]: With dead ends: 1223 [2021-07-13 18:55:08,418 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:55:08,418 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:55:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:55:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:55:08,419 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 18:55:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:55:08,419 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-07-13 18:55:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:08,419 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:55:08,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:55:08,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:55:08,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:55:08,421 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:55:08,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:55:08 BasicIcfg [2021-07-13 18:55:08,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:55:08,425 INFO L168 Benchmark]: Toolchain (without parser) took 4624.19 ms. Allocated memory was 189.8 MB in the beginning and 397.4 MB in the end (delta: 207.6 MB). Free memory was 153.3 MB in the beginning and 244.6 MB in the end (delta: -91.4 MB). Peak memory consumption was 117.5 MB. Max. memory is 8.0 GB. [2021-07-13 18:55:08,425 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:55:08,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.69 ms. Allocated memory is still 189.8 MB. Free memory was 153.1 MB in the beginning and 163.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-13 18:55:08,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.16 ms. Allocated memory is still 189.8 MB. Free memory was 163.9 MB in the beginning and 161.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:55:08,426 INFO L168 Benchmark]: Boogie Preprocessor took 20.96 ms. Allocated memory is still 189.8 MB. Free memory was 161.8 MB in the beginning and 160.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:55:08,427 INFO L168 Benchmark]: RCFGBuilder took 564.76 ms. Allocated memory is still 189.8 MB. Free memory was 160.8 MB in the beginning and 137.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:55:08,427 INFO L168 Benchmark]: TraceAbstraction took 3351.08 ms. Allocated memory was 189.8 MB in the beginning and 397.4 MB in the end (delta: 207.6 MB). Free memory was 136.7 MB in the beginning and 244.6 MB in the end (delta: -108.0 MB). Peak memory consumption was 100.7 MB. Max. memory is 8.0 GB. [2021-07-13 18:55:08,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 189.8 MB. Free memory is still 171.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 646.69 ms. Allocated memory is still 189.8 MB. Free memory was 153.1 MB in the beginning and 163.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.16 ms. Allocated memory is still 189.8 MB. Free memory was 163.9 MB in the beginning and 161.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.96 ms. Allocated memory is still 189.8 MB. Free memory was 161.8 MB in the beginning and 160.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 564.76 ms. Allocated memory is still 189.8 MB. Free memory was 160.8 MB in the beginning and 137.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3351.08 ms. Allocated memory was 189.8 MB in the beginning and 397.4 MB in the end (delta: 207.6 MB). Free memory was 136.7 MB in the beginning and 244.6 MB in the end (delta: -108.0 MB). Peak memory consumption was 100.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3228.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 80.2ms, AutomataDifference: 1350.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 207.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 479 SDtfs, 827 SDslu, 1567 SDs, 0 SdLazy, 240 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 290.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 683.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 452.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 564 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.0ms SsaConstructionTime, 217.5ms SatisfiabilityAnalysisTime, 702.8ms InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 271 ConstructedInterpolants, 0 QuantifiedInterpolants, 1275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...