/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/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:49:24,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:49:24,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:49:24,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:49:24,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:49:24,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:49:24,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:49:24,119 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 [2021-07-09 16:49:24,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:49:24,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:49:24,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:49:24,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:49:24,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:49:24,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:49:24,153 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:49:24,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:49:24,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:49:24,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:49:24,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:49:24,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:49:24,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:49:24,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:49:24,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:49:24,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:49:24,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:49:24,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:49:24,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:49:24,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:49:24,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:49:24,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:49:24,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:49:24,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:49:24,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:49:24,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:49:24,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:49:24,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:49:24,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:49:24,156 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:49:24,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:49:24,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:49:24,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:49:24,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:49:24,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:49:24,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:49:24,389 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:49:24,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-07-09 16:49:24,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23027f1bd/ea8558572deb48519ef97a4be8ab5780/FLAGd7cac239a [2021-07-09 16:49:24,895 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:49:24,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-07-09 16:49:24,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23027f1bd/ea8558572deb48519ef97a4be8ab5780/FLAGd7cac239a [2021-07-09 16:49:25,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23027f1bd/ea8558572deb48519ef97a4be8ab5780 [2021-07-09 16:49:25,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:49:25,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:49:25,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:49:25,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:49:25,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:49:25,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf56291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25, skipping insertion in model container [2021-07-09 16:49:25,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:49:25,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:49:25,568 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/safe015_pso.opt.i[949,962] [2021-07-09 16:49:25,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:49:25,699 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:49:25,710 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/safe015_pso.opt.i[949,962] [2021-07-09 16:49:25,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:49:25,763 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:49:25,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25 WrapperNode [2021-07-09 16:49:25,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:49:25,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:49:25,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:49:25,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:49:25,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:49:25,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:49:25,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:49:25,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:49:25,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (1/1) ... [2021-07-09 16:49:25,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:49:25,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:49:25,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:49:25,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:49:25,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (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 [2021-07-09 16:49:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:49:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:49:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:49:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:49:25,947 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 16:49:25,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 16:49:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 16:49:25,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 16:49:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 16:49:25,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 16:49:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:49:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:49:25,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:49:25,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:49:25,950 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:49:26,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:49:26,211 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 16:49:26,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:49:26 BoogieIcfgContainer [2021-07-09 16:49:26,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:49:26,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:49:26,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:49:26,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:49:26,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:49:25" (1/3) ... [2021-07-09 16:49:26,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ae617d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:49:26, skipping insertion in model container [2021-07-09 16:49:26,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:25" (2/3) ... [2021-07-09 16:49:26,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ae617d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:49:26, skipping insertion in model container [2021-07-09 16:49:26,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:49:26" (3/3) ... [2021-07-09 16:49:26,217 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2021-07-09 16:49:26,221 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:49:26,221 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:49:26,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:49:26,222 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:49:26,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,239 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,242 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,243 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,243 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,243 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,245 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,245 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:26,256 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:49:26,271 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 16:49:26,283 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:49:26,284 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:49:26,284 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:49:26,284 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:49:26,284 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:49:26,284 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:49:26,284 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:49:26,284 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:49:26,291 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-07-09 16:49:26,475 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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) [2021-07-09 16:49:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 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) [2021-07-09 16:49:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 16:49:26,517 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:26,518 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] [2021-07-09 16:49:26,518 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-07-09 16:49:26,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:26,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355033984] [2021-07-09 16:49:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:26,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:26,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355033984] [2021-07-09 16:49:26,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355033984] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:26,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:26,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:26,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12154700] [2021-07-09 16:49:26,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:26,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:26,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:26,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:26,928 INFO L87 Difference]: Start difference. First operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:27,285 INFO L93 Difference]: Finished difference Result 10568 states and 35705 transitions. [2021-07-09 16:49:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 16:49:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:27,341 INFO L225 Difference]: With dead ends: 10568 [2021-07-09 16:49:27,341 INFO L226 Difference]: Without dead ends: 7140 [2021-07-09 16:49:27,342 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-07-09 16:49:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6006. [2021-07-09 16:49:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6006 states, 6005 states have (on average 3.33488759367194) internal successors, (20026), 6005 states have internal predecessors, (20026), 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) [2021-07-09 16:49:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6006 states to 6006 states and 20026 transitions. [2021-07-09 16:49:27,600 INFO L78 Accepts]: Start accepts. Automaton has 6006 states and 20026 transitions. Word has length 48 [2021-07-09 16:49:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:27,601 INFO L482 AbstractCegarLoop]: Abstraction has 6006 states and 20026 transitions. [2021-07-09 16:49:27,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6006 states and 20026 transitions. [2021-07-09 16:49:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-09 16:49:27,610 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:27,611 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] [2021-07-09 16:49:27,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:49:27,611 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:27,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:27,612 INFO L82 PathProgramCache]: Analyzing trace with hash -396116582, now seen corresponding path program 1 times [2021-07-09 16:49:27,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:27,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780919645] [2021-07-09 16:49:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:27,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:27,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780919645] [2021-07-09 16:49:27,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780919645] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:27,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:27,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:27,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870918897] [2021-07-09 16:49:27,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:27,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:27,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:27,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:27,728 INFO L87 Difference]: Start difference. First operand 6006 states and 20026 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2021-07-09 16:49:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:28,012 INFO L93 Difference]: Finished difference Result 8410 states and 27696 transitions. [2021-07-09 16:49:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 16:49:28,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2021-07-09 16:49:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:28,045 INFO L225 Difference]: With dead ends: 8410 [2021-07-09 16:49:28,045 INFO L226 Difference]: Without dead ends: 6474 [2021-07-09 16:49:28,046 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2021-07-09 16:49:28,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5338. [2021-07-09 16:49:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.3041034288926365) internal successors, (17634), 5337 states have internal predecessors, (17634), 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) [2021-07-09 16:49:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 17634 transitions. [2021-07-09 16:49:28,220 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 17634 transitions. Word has length 50 [2021-07-09 16:49:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:28,221 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 17634 transitions. [2021-07-09 16:49:28,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2021-07-09 16:49:28,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 17634 transitions. [2021-07-09 16:49:28,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-09 16:49:28,233 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:28,233 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] [2021-07-09 16:49:28,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:49:28,233 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:28,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1823781980, now seen corresponding path program 1 times [2021-07-09 16:49:28,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:28,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409682274] [2021-07-09 16:49:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:28,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:28,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409682274] [2021-07-09 16:49:28,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409682274] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:28,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:28,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:28,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797596592] [2021-07-09 16:49:28,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:28,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:28,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:28,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:28,344 INFO L87 Difference]: Start difference. First operand 5338 states and 17634 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) [2021-07-09 16:49:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:28,460 INFO L93 Difference]: Finished difference Result 6058 states and 19897 transitions. [2021-07-09 16:49:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:28,461 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 [2021-07-09 16:49:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:28,495 INFO L225 Difference]: With dead ends: 6058 [2021-07-09 16:49:28,495 INFO L226 Difference]: Without dead ends: 5134 [2021-07-09 16:49:28,495 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2021-07-09 16:49:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 5118. [2021-07-09 16:49:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 5117 states have (on average 3.2855188587062734) internal successors, (16812), 5117 states have internal predecessors, (16812), 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) [2021-07-09 16:49:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 16812 transitions. [2021-07-09 16:49:28,665 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 16812 transitions. Word has length 51 [2021-07-09 16:49:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:28,665 INFO L482 AbstractCegarLoop]: Abstraction has 5118 states and 16812 transitions. [2021-07-09 16:49:28,666 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) [2021-07-09 16:49:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 16812 transitions. [2021-07-09 16:49:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:49:28,675 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:28,675 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] [2021-07-09 16:49:28,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:49:28,675 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1802568255, now seen corresponding path program 1 times [2021-07-09 16:49:28,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:28,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663058355] [2021-07-09 16:49:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:28,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:28,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663058355] [2021-07-09 16:49:28,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663058355] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:28,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:28,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:28,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944391548] [2021-07-09 16:49:28,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:28,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:28,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:28,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:28,769 INFO L87 Difference]: Start difference. First operand 5118 states and 16812 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-07-09 16:49:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:28,999 INFO L93 Difference]: Finished difference Result 6686 states and 21789 transitions. [2021-07-09 16:49:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 16:49:29,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-07-09 16:49:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:29,019 INFO L225 Difference]: With dead ends: 6686 [2021-07-09 16:49:29,019 INFO L226 Difference]: Without dead ends: 5586 [2021-07-09 16:49:29,019 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 179.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:29,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-07-09 16:49:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 4427. [2021-07-09 16:49:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.2790329868956167) internal successors, (14513), 4426 states have internal predecessors, (14513), 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) [2021-07-09 16:49:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14513 transitions. [2021-07-09 16:49:29,130 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14513 transitions. Word has length 52 [2021-07-09 16:49:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:29,131 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14513 transitions. [2021-07-09 16:49:29,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-07-09 16:49:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14513 transitions. [2021-07-09 16:49:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:49:29,140 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:29,140 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] [2021-07-09 16:49:29,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:49:29,140 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:29,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1730681128, now seen corresponding path program 1 times [2021-07-09 16:49:29,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:29,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854345538] [2021-07-09 16:49:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:29,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:29,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854345538] [2021-07-09 16:49:29,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854345538] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:29,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:29,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:29,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526862622] [2021-07-09 16:49:29,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:29,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:29,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:29,284 INFO L87 Difference]: Start difference. First operand 4427 states and 14513 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) [2021-07-09 16:49:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:29,484 INFO L93 Difference]: Finished difference Result 6233 states and 20189 transitions. [2021-07-09 16:49:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 16:49:29,485 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 [2021-07-09 16:49:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:29,500 INFO L225 Difference]: With dead ends: 6233 [2021-07-09 16:49:29,500 INFO L226 Difference]: Without dead ends: 5349 [2021-07-09 16:49:29,501 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-07-09 16:49:29,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4205. [2021-07-09 16:49:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2649857278782113) internal successors, (13726), 4204 states have internal predecessors, (13726), 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) [2021-07-09 16:49:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13726 transitions. [2021-07-09 16:49:29,630 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13726 transitions. Word has length 54 [2021-07-09 16:49:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:29,631 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13726 transitions. [2021-07-09 16:49:29,631 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) [2021-07-09 16:49:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13726 transitions. [2021-07-09 16:49:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:49:29,639 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:29,640 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] [2021-07-09 16:49:29,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:49:29,640 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:29,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:29,641 INFO L82 PathProgramCache]: Analyzing trace with hash 245526365, now seen corresponding path program 1 times [2021-07-09 16:49:29,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:29,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914376162] [2021-07-09 16:49:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:29,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:29,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914376162] [2021-07-09 16:49:29,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914376162] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:29,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:29,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:49:29,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271525272] [2021-07-09 16:49:29,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:49:29,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:29,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:49:29,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:49:29,714 INFO L87 Difference]: Start difference. First operand 4205 states and 13726 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:29,858 INFO L93 Difference]: Finished difference Result 7461 states and 24155 transitions. [2021-07-09 16:49:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-09 16:49:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:29,873 INFO L225 Difference]: With dead ends: 7461 [2021-07-09 16:49:29,873 INFO L226 Difference]: Without dead ends: 5277 [2021-07-09 16:49:29,873 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:49:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2021-07-09 16:49:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 4205. [2021-07-09 16:49:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2516650808753567) internal successors, (13670), 4204 states have internal predecessors, (13670), 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) [2021-07-09 16:49:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13670 transitions. [2021-07-09 16:49:29,966 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13670 transitions. Word has length 54 [2021-07-09 16:49:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:29,966 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13670 transitions. [2021-07-09 16:49:29,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13670 transitions. [2021-07-09 16:49:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:49:29,974 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:29,974 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] [2021-07-09 16:49:29,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:49:29,974 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash 192553753, now seen corresponding path program 2 times [2021-07-09 16:49:29,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:29,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419531502] [2021-07-09 16:49:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:30,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:30,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419531502] [2021-07-09 16:49:30,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419531502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:30,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:30,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:49:30,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966013653] [2021-07-09 16:49:30,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:49:30,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:49:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:49:30,045 INFO L87 Difference]: Start difference. First operand 4205 states and 13670 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:30,136 INFO L93 Difference]: Finished difference Result 5341 states and 17118 transitions. [2021-07-09 16:49:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 16:49:30,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-09 16:49:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:30,143 INFO L225 Difference]: With dead ends: 5341 [2021-07-09 16:49:30,144 INFO L226 Difference]: Without dead ends: 2597 [2021-07-09 16:49:30,144 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:49:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-07-09 16:49:30,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2405. [2021-07-09 16:49:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 3.074459234608985) internal successors, (7391), 2404 states have internal predecessors, (7391), 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) [2021-07-09 16:49:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 7391 transitions. [2021-07-09 16:49:30,189 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 7391 transitions. Word has length 54 [2021-07-09 16:49:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:30,189 INFO L482 AbstractCegarLoop]: Abstraction has 2405 states and 7391 transitions. [2021-07-09 16:49:30,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 7391 transitions. [2021-07-09 16:49:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 16:49:30,193 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:30,193 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] [2021-07-09 16:49:30,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 16:49:30,193 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:30,194 INFO L82 PathProgramCache]: Analyzing trace with hash -663113566, now seen corresponding path program 1 times [2021-07-09 16:49:30,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:30,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363895236] [2021-07-09 16:49:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:30,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:30,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363895236] [2021-07-09 16:49:30,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363895236] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:30,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:30,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:30,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621637562] [2021-07-09 16:49:30,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:30,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:30,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:30,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:30,270 INFO L87 Difference]: Start difference. First operand 2405 states and 7391 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-07-09 16:49:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:30,366 INFO L93 Difference]: Finished difference Result 2882 states and 8749 transitions. [2021-07-09 16:49:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 [2021-07-09 16:49:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:30,373 INFO L225 Difference]: With dead ends: 2882 [2021-07-09 16:49:30,374 INFO L226 Difference]: Without dead ends: 2186 [2021-07-09 16:49:30,374 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2021-07-09 16:49:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2186. [2021-07-09 16:49:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 3.0187643020594965) internal successors, (6596), 2185 states have internal predecessors, (6596), 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) [2021-07-09 16:49:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 6596 transitions. [2021-07-09 16:49:30,414 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 6596 transitions. Word has length 55 [2021-07-09 16:49:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:30,415 INFO L482 AbstractCegarLoop]: Abstraction has 2186 states and 6596 transitions. [2021-07-09 16:49:30,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-07-09 16:49:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6596 transitions. [2021-07-09 16:49:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-09 16:49:30,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:30,434 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] [2021-07-09 16:49:30,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 16:49:30,434 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:30,435 INFO L82 PathProgramCache]: Analyzing trace with hash 328653495, now seen corresponding path program 1 times [2021-07-09 16:49:30,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:30,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65053185] [2021-07-09 16:49:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:30,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:30,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65053185] [2021-07-09 16:49:30,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65053185] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:30,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:30,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:30,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197189966] [2021-07-09 16:49:30,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:30,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:30,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:30,518 INFO L87 Difference]: Start difference. First operand 2186 states and 6596 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:30,608 INFO L93 Difference]: Finished difference Result 2123 states and 6230 transitions. [2021-07-09 16:49:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:49:30,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-07-09 16:49:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:30,612 INFO L225 Difference]: With dead ends: 2123 [2021-07-09 16:49:30,612 INFO L226 Difference]: Without dead ends: 1571 [2021-07-09 16:49:30,612 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:49:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-07-09 16:49:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2021-07-09 16:49:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 2.875796178343949) internal successors, (4515), 1570 states have internal predecessors, (4515), 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) [2021-07-09 16:49:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 4515 transitions. [2021-07-09 16:49:30,634 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 4515 transitions. Word has length 56 [2021-07-09 16:49:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:30,634 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 4515 transitions. [2021-07-09 16:49:30,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 16:49:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 4515 transitions. [2021-07-09 16:49:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-09 16:49:30,637 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:30,637 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] [2021-07-09 16:49:30,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 16:49:30,637 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:30,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:30,637 INFO L82 PathProgramCache]: Analyzing trace with hash 55032350, now seen corresponding path program 1 times [2021-07-09 16:49:30,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:30,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96362380] [2021-07-09 16:49:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:30,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:30,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96362380] [2021-07-09 16:49:30,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96362380] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:30,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:30,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:49:30,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232904848] [2021-07-09 16:49:30,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:49:30,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:30,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:49:30,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:49:30,696 INFO L87 Difference]: Start difference. First operand 1571 states and 4515 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-07-09 16:49:30,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:30,761 INFO L93 Difference]: Finished difference Result 1139 states and 3192 transitions. [2021-07-09 16:49:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 16:49:30,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 [2021-07-09 16:49:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:30,762 INFO L225 Difference]: With dead ends: 1139 [2021-07-09 16:49:30,762 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:49:30,762 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 70.0ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:49:30,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:49:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:49:30,762 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) [2021-07-09 16:49:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:49:30,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-07-09 16:49:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:30,763 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:49:30,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-07-09 16:49:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:49:30,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:49:30,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 16:49:30,765 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:49:30,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:49:30 BasicIcfg [2021-07-09 16:49:30,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:49:30,767 INFO L168 Benchmark]: Toolchain (without parser) took 5353.80 ms. Allocated memory was 127.9 MB in the beginning and 706.7 MB in the end (delta: 578.8 MB). Free memory was 102.6 MB in the beginning and 452.3 MB in the end (delta: -349.6 MB). Peak memory consumption was 228.9 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:30,767 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 127.9 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:49:30,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.66 ms. Allocated memory was 127.9 MB in the beginning and 181.4 MB in the end (delta: 53.5 MB). Free memory was 102.4 MB in the beginning and 153.5 MB in the end (delta: -51.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:30,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 181.4 MB. Free memory was 153.5 MB in the beginning and 151.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:30,768 INFO L168 Benchmark]: Boogie Preprocessor took 28.10 ms. Allocated memory is still 181.4 MB. Free memory was 151.8 MB in the beginning and 150.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:30,768 INFO L168 Benchmark]: RCFGBuilder took 374.46 ms. Allocated memory is still 181.4 MB. Free memory was 150.1 MB in the beginning and 153.7 MB in the end (delta: -3.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:30,768 INFO L168 Benchmark]: TraceAbstraction took 4552.66 ms. Allocated memory was 181.4 MB in the beginning and 706.7 MB in the end (delta: 525.3 MB). Free memory was 153.3 MB in the beginning and 452.3 MB in the end (delta: -299.0 MB). Peak memory consumption was 226.3 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:30,769 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 127.9 MB. Free memory is still 108.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.66 ms. Allocated memory was 127.9 MB in the beginning and 181.4 MB in the end (delta: 53.5 MB). Free memory was 102.4 MB in the beginning and 153.5 MB in the end (delta: -51.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 181.4 MB. Free memory was 153.5 MB in the beginning and 151.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.10 ms. Allocated memory is still 181.4 MB. Free memory was 151.8 MB in the beginning and 150.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 374.46 ms. Allocated memory is still 181.4 MB. Free memory was 150.1 MB in the beginning and 153.7 MB in the end (delta: -3.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4552.66 ms. Allocated memory was 181.4 MB in the beginning and 706.7 MB in the end (delta: 525.3 MB). Free memory was 153.3 MB in the beginning and 452.3 MB in the end (delta: -299.0 MB). Peak memory consumption was 226.3 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, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4481.6ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 120.2ms, AutomataDifference: 1914.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 191.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1111 SDtfs, 1678 SDslu, 3741 SDs, 0 SdLazy, 483 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 323.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1062.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6006occurred in iteration=1, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1031.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 5853 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.4ms SsaConstructionTime, 176.5ms SatisfiabilityAnalysisTime, 854.8ms InterpolantComputationTime, 532 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 2698 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...