/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:14:04,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:14:04,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:14:04,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:14:04,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:14:04,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:14:04,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:14:04,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:14:04,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:14:04,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:14:04,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:14:04,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:14:04,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:14:04,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:14:04,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:14:04,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:14:04,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:14:04,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:14:04,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:14:04,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:14:04,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:14:04,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:14:04,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:14:04,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:14:04,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 11:14:04,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 11:14:04,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 11:14:04,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 11:14:04,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 11:14:04,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 11:14:04,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:14:04,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:14:04,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:14:04,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:14:04,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:14:04,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:14:04,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:14:04,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:14:04,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:14:04,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:14:04,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:14:04,207 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-SemanticLbe.epf [2021-03-11 11:14:04,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:14:04,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:14:04,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:14:04,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:14:04,236 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:14:04,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:14:04,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:14:04,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:14:04,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:14:04,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:14:04,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:14:04,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:14:04,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:14:04,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:14:04,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:14:04,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:14:04,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:14:04,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:14:04,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:14:04,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:14:04,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:14:04,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:14:04,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:14:04,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:14:04,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:14:04,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:14:04,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:14:04,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:14:04,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:14:04,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:14:04,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:14:04,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:14:04,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:14:04,523 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:14:04,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt.i [2021-03-11 11:14:04,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13655add1/4dc358cd738d42ad8f7cfae246119411/FLAG7e3c2c4cb [2021-03-11 11:14:05,130 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:14:05,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt.i [2021-03-11 11:14:05,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13655add1/4dc358cd738d42ad8f7cfae246119411/FLAG7e3c2c4cb [2021-03-11 11:14:05,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13655add1/4dc358cd738d42ad8f7cfae246119411 [2021-03-11 11:14:05,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:14:05,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:14:05,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:14:05,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:14:05,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:14:05,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:05,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfb9c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05, skipping insertion in model container [2021-03-11 11:14:05,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:05,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:14:05,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:14:05,624 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt.i[950,963] [2021-03-11 11:14:05,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:14:05,853 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:14:05,865 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt.i[950,963] [2021-03-11 11:14:05,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:14:05,971 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:14:05,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05 WrapperNode [2021-03-11 11:14:05,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:14:05,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:14:05,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:14:05,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:14:05,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:05,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:14:06,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:14:06,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:14:06,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:14:06,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... [2021-03-11 11:14:06,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:14:06,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:14:06,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:14:06,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:14:06,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:14:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:14:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:14:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:14:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:14:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:14:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:14:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:14:06,103 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:14:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:14:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:14:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:14:06,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:14:06,105 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:14:07,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:14:07,771 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 11:14:07,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:14:07 BoogieIcfgContainer [2021-03-11 11:14:07,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:14:07,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:14:07,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:14:07,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:14:07,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:14:05" (1/3) ... [2021-03-11 11:14:07,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb0e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:14:07, skipping insertion in model container [2021-03-11 11:14:07,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:14:05" (2/3) ... [2021-03-11 11:14:07,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb0e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:14:07, skipping insertion in model container [2021-03-11 11:14:07,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:14:07" (3/3) ... [2021-03-11 11:14:07,779 INFO L111 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt.i [2021-03-11 11:14:07,784 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:14:07,784 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:14:07,788 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 11:14:07,789 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:14:07,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,832 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,832 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,832 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:14:07,837 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:14:07,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 11:14:07,875 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:14:07,875 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:14:07,875 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:14:07,876 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:14:07,876 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:14:07,876 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:14:07,876 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:14:07,876 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:14:07,888 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:14:07,906 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 83 transitions, 176 flow [2021-03-11 11:14:07,908 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 83 transitions, 176 flow [2021-03-11 11:14:07,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 83 transitions, 176 flow [2021-03-11 11:14:07,951 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-03-11 11:14:07,951 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:14:07,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2021-03-11 11:14:07,957 INFO L116 LiptonReduction]: Number of co-enabled transitions 1046 [2021-03-11 11:14:09,584 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2021-03-11 11:14:09,956 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 86 [2021-03-11 11:14:10,078 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-11 11:14:11,579 WARN L205 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 187 [2021-03-11 11:14:11,869 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-11 11:14:13,222 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 312 DAG size of output: 268 [2021-03-11 11:14:13,786 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2021-03-11 11:14:14,492 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-11 11:14:14,662 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-11 11:14:14,973 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2021-03-11 11:14:15,098 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-03-11 11:14:15,361 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2021-03-11 11:14:15,483 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-03-11 11:14:15,486 INFO L131 LiptonReduction]: Checked pairs total: 2973 [2021-03-11 11:14:15,486 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-03-11 11:14:15,493 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 23 transitions, 56 flow [2021-03-11 11:14:15,511 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 252 states, 248 states have (on average 2.6693548387096775) internal successors, (662), 251 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 248 states have (on average 2.6693548387096775) internal successors, (662), 251 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:15,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-03-11 11:14:15,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:15,518 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 11:14:15,518 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:15,522 INFO L82 PathProgramCache]: Analyzing trace with hash 887242844, now seen corresponding path program 1 times [2021-03-11 11:14:15,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:15,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491611876] [2021-03-11 11:14:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:15,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:15,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:14:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:15,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491611876] [2021-03-11 11:14:15,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:15,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 11:14:15,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488822867] [2021-03-11 11:14:15,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:14:15,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:15,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:14:15,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:14:15,708 INFO L87 Difference]: Start difference. First operand has 252 states, 248 states have (on average 2.6693548387096775) internal successors, (662), 251 states have internal predecessors, (662), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:15,755 INFO L93 Difference]: Finished difference Result 222 states and 543 transitions. [2021-03-11 11:14:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:14:15,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-03-11 11:14:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:15,766 INFO L225 Difference]: With dead ends: 222 [2021-03-11 11:14:15,766 INFO L226 Difference]: Without dead ends: 187 [2021-03-11 11:14:15,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:14:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-03-11 11:14:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-03-11 11:14:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.4193548387096775) internal successors, (450), 186 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 450 transitions. [2021-03-11 11:14:15,833 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 450 transitions. Word has length 5 [2021-03-11 11:14:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:15,834 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 450 transitions. [2021-03-11 11:14:15,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 450 transitions. [2021-03-11 11:14:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:14:15,835 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:15,835 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:15,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:14:15,835 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:15,836 INFO L82 PathProgramCache]: Analyzing trace with hash 624884180, now seen corresponding path program 1 times [2021-03-11 11:14:15,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:15,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169309204] [2021-03-11 11:14:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:16,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:14:16,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:14:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:16,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169309204] [2021-03-11 11:14:16,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:16,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:14:16,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437311785] [2021-03-11 11:14:16,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:14:16,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:16,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:14:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:14:16,065 INFO L87 Difference]: Start difference. First operand 187 states and 450 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:16,103 INFO L93 Difference]: Finished difference Result 192 states and 439 transitions. [2021-03-11 11:14:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:14:16,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-03-11 11:14:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:16,109 INFO L225 Difference]: With dead ends: 192 [2021-03-11 11:14:16,109 INFO L226 Difference]: Without dead ends: 157 [2021-03-11 11:14:16,109 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:14:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-03-11 11:14:16,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-03-11 11:14:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 2.3461538461538463) internal successors, (366), 156 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 366 transitions. [2021-03-11 11:14:16,124 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 366 transitions. Word has length 8 [2021-03-11 11:14:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:16,124 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 366 transitions. [2021-03-11 11:14:16,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,125 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 366 transitions. [2021-03-11 11:14:16,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:14:16,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:16,130 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:16,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:14:16,131 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:16,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:16,131 INFO L82 PathProgramCache]: Analyzing trace with hash -270038580, now seen corresponding path program 1 times [2021-03-11 11:14:16,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:16,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728061879] [2021-03-11 11:14:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:16,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:14:16,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:14:16,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:14:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:16,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728061879] [2021-03-11 11:14:16,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:16,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:14:16,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240537583] [2021-03-11 11:14:16,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:14:16,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:16,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:14:16,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:14:16,274 INFO L87 Difference]: Start difference. First operand 157 states and 366 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:16,314 INFO L93 Difference]: Finished difference Result 245 states and 552 transitions. [2021-03-11 11:14:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:14:16,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-03-11 11:14:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:16,316 INFO L225 Difference]: With dead ends: 245 [2021-03-11 11:14:16,316 INFO L226 Difference]: Without dead ends: 117 [2021-03-11 11:14:16,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:14:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-03-11 11:14:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-03-11 11:14:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.2758620689655173) internal successors, (264), 116 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 264 transitions. [2021-03-11 11:14:16,323 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 264 transitions. Word has length 11 [2021-03-11 11:14:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:16,323 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 264 transitions. [2021-03-11 11:14:16,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 264 transitions. [2021-03-11 11:14:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:14:16,324 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:16,324 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:16,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:14:16,324 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:16,325 INFO L82 PathProgramCache]: Analyzing trace with hash 202156968, now seen corresponding path program 1 times [2021-03-11 11:14:16,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:16,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963050683] [2021-03-11 11:14:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:16,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:14:16,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:14:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:16,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963050683] [2021-03-11 11:14:16,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:16,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:14:16,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495494238] [2021-03-11 11:14:16,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:14:16,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:16,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:14:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:14:16,448 INFO L87 Difference]: Start difference. First operand 117 states and 264 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:16,472 INFO L93 Difference]: Finished difference Result 125 states and 270 transitions. [2021-03-11 11:14:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:14:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-03-11 11:14:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:16,475 INFO L225 Difference]: With dead ends: 125 [2021-03-11 11:14:16,475 INFO L226 Difference]: Without dead ends: 109 [2021-03-11 11:14:16,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:14:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-03-11 11:14:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-03-11 11:14:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.240740740740741) internal successors, (242), 108 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 242 transitions. [2021-03-11 11:14:16,492 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 242 transitions. Word has length 12 [2021-03-11 11:14:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:16,492 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 242 transitions. [2021-03-11 11:14:16,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 242 transitions. [2021-03-11 11:14:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:14:16,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:16,493 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:16,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:14:16,493 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:16,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:16,494 INFO L82 PathProgramCache]: Analyzing trace with hash 981925934, now seen corresponding path program 1 times [2021-03-11 11:14:16,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:16,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049010090] [2021-03-11 11:14:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:16,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 11:14:16,614 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-03-11 11:14:16,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 11:14:16,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 11:14:16,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:14:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:16,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049010090] [2021-03-11 11:14:16,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:16,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:14:16,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596497420] [2021-03-11 11:14:16,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:14:16,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:16,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:14:16,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:14:16,659 INFO L87 Difference]: Start difference. First operand 109 states and 242 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:16,754 INFO L93 Difference]: Finished difference Result 119 states and 254 transitions. [2021-03-11 11:14:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:14:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-03-11 11:14:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:16,755 INFO L225 Difference]: With dead ends: 119 [2021-03-11 11:14:16,756 INFO L226 Difference]: Without dead ends: 107 [2021-03-11 11:14:16,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-11 11:14:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-03-11 11:14:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-03-11 11:14:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.2264150943396226) internal successors, (236), 106 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 236 transitions. [2021-03-11 11:14:16,763 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 236 transitions. Word has length 13 [2021-03-11 11:14:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:16,763 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 236 transitions. [2021-03-11 11:14:16,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 236 transitions. [2021-03-11 11:14:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:14:16,764 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:16,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:16,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:14:16,765 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:16,765 INFO L82 PathProgramCache]: Analyzing trace with hash -586410745, now seen corresponding path program 1 times [2021-03-11 11:14:16,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:16,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886507120] [2021-03-11 11:14:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:16,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:14:16,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:14:16,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:14:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:16,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886507120] [2021-03-11 11:14:16,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:16,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:14:16,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24513651] [2021-03-11 11:14:16,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:14:16,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:16,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:14:16,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:14:16,847 INFO L87 Difference]: Start difference. First operand 107 states and 236 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:16,872 INFO L93 Difference]: Finished difference Result 88 states and 162 transitions. [2021-03-11 11:14:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:14:16,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-03-11 11:14:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:16,877 INFO L225 Difference]: With dead ends: 88 [2021-03-11 11:14:16,877 INFO L226 Difference]: Without dead ends: 61 [2021-03-11 11:14:16,877 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:14:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-03-11 11:14:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-03-11 11:14:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.7) internal successors, (102), 60 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 102 transitions. [2021-03-11 11:14:16,879 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 102 transitions. Word has length 14 [2021-03-11 11:14:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:16,879 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 102 transitions. [2021-03-11 11:14:16,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 102 transitions. [2021-03-11 11:14:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:14:16,883 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:16,883 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:16,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:14:16,883 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:16,884 INFO L82 PathProgramCache]: Analyzing trace with hash -995128093, now seen corresponding path program 1 times [2021-03-11 11:14:16,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:16,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506740218] [2021-03-11 11:14:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:16,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:14:16,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:14:16,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:14:16,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:16,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:14:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:16,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506740218] [2021-03-11 11:14:16,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:16,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:14:16,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103497999] [2021-03-11 11:14:16,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:14:16,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:16,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:14:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:14:16,949 INFO L87 Difference]: Start difference. First operand 61 states and 102 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:16,983 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2021-03-11 11:14:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:14:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-03-11 11:14:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:16,984 INFO L225 Difference]: With dead ends: 44 [2021-03-11 11:14:16,984 INFO L226 Difference]: Without dead ends: 35 [2021-03-11 11:14:16,985 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:14:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-03-11 11:14:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-03-11 11:14:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 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) [2021-03-11 11:14:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2021-03-11 11:14:16,986 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 15 [2021-03-11 11:14:16,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:16,987 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2021-03-11 11:14:16,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-03-11 11:14:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 11:14:16,987 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:16,987 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:16,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:14:16,987 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:16,988 INFO L82 PathProgramCache]: Analyzing trace with hash 712508715, now seen corresponding path program 1 times [2021-03-11 11:14:16,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:16,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670621282] [2021-03-11 11:14:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:14:17,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:17,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:14:17,130 INFO L142 QuantifierPusher]: treesize reduction 14, result has 81.8 percent of original size [2021-03-11 11:14:17,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 11:14:17,160 INFO L142 QuantifierPusher]: treesize reduction 29, result has 76.4 percent of original size [2021-03-11 11:14:17,162 INFO L147 QuantifierPusher]: treesize reduction 18, result has 80.9 percent of original size 76 [2021-03-11 11:14:17,226 INFO L142 QuantifierPusher]: treesize reduction 29, result has 77.0 percent of original size [2021-03-11 11:14:17,229 INFO L147 QuantifierPusher]: treesize reduction 18, result has 81.4 percent of original size 79 [2021-03-11 11:14:17,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:17,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 11:14:17,301 INFO L142 QuantifierPusher]: treesize reduction 6, result has 83.8 percent of original size [2021-03-11 11:14:17,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 11:14:17,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:14:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:14:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:14:17,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670621282] [2021-03-11 11:14:17,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:14:17,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 11:14:17,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626405593] [2021-03-11 11:14:17,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 11:14:17,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:14:17,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 11:14:17,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:14:17,346 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:14:17,453 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2021-03-11 11:14:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:14:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 18 [2021-03-11 11:14:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:14:17,454 INFO L225 Difference]: With dead ends: 52 [2021-03-11 11:14:17,454 INFO L226 Difference]: Without dead ends: 39 [2021-03-11 11:14:17,454 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 202.6ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-11 11:14:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-03-11 11:14:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2021-03-11 11:14:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-03-11 11:14:17,456 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 18 [2021-03-11 11:14:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:14:17,456 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-03-11 11:14:17,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:14:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-03-11 11:14:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 11:14:17,456 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:14:17,456 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:14:17,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:14:17,457 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:14:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:14:17,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1562807405, now seen corresponding path program 2 times [2021-03-11 11:14:17,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:14:17,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198739231] [2021-03-11 11:14:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:14:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 11:14:17,490 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 11:14:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 11:14:17,552 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 11:14:17,588 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 11:14:17,588 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 11:14:17,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:14:17,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:14:17 BasicIcfg [2021-03-11 11:14:17,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:14:17,667 INFO L168 Benchmark]: Toolchain (without parser) took 12217.75 ms. Allocated memory was 255.9 MB in the beginning and 587.2 MB in the end (delta: 331.4 MB). Free memory was 233.2 MB in the beginning and 334.5 MB in the end (delta: -101.2 MB). Peak memory consumption was 228.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:14:17,667 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:14:17,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.67 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 232.6 MB in the beginning and 333.9 MB in the end (delta: -101.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 11:14:17,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 373.3 MB. Free memory was 333.9 MB in the beginning and 331.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:14:17,669 INFO L168 Benchmark]: Boogie Preprocessor took 29.53 ms. Allocated memory is still 373.3 MB. Free memory was 331.2 MB in the beginning and 329.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:14:17,669 INFO L168 Benchmark]: RCFGBuilder took 1723.83 ms. Allocated memory is still 373.3 MB. Free memory was 329.1 MB in the beginning and 289.7 MB in the end (delta: 39.4 MB). Peak memory consumption was 49.9 MB. Max. memory is 16.0 GB. [2021-03-11 11:14:17,671 INFO L168 Benchmark]: TraceAbstraction took 9889.77 ms. Allocated memory was 373.3 MB in the beginning and 587.2 MB in the end (delta: 213.9 MB). Free memory was 288.7 MB in the beginning and 334.5 MB in the end (delta: -45.8 MB). Peak memory consumption was 167.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:14:17,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 519.67 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 232.6 MB in the beginning and 333.9 MB in the end (delta: -101.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 373.3 MB. Free memory was 333.9 MB in the beginning and 331.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.53 ms. Allocated memory is still 373.3 MB. Free memory was 331.2 MB in the beginning and 329.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1723.83 ms. Allocated memory is still 373.3 MB. Free memory was 329.1 MB in the beginning and 289.7 MB in the end (delta: 39.4 MB). Peak memory consumption was 49.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9889.77 ms. Allocated memory was 373.3 MB in the beginning and 587.2 MB in the end (delta: 213.9 MB). Free memory was 288.7 MB in the beginning and 334.5 MB in the end (delta: -45.8 MB). Peak memory consumption was 167.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7578.4ms, 88 PlacesBefore, 29 PlacesAfterwards, 83 TransitionsBefore, 23 TransitionsAfterwards, 1046 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 2973 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1212, positive: 1077, positive conditional: 0, positive unconditional: 1077, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 735, positive: 693, positive conditional: 0, positive unconditional: 693, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 735, positive: 676, positive conditional: 0, positive unconditional: 676, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 59, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 841, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 793, negative conditional: 0, negative unconditional: 793, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1212, positive: 384, positive conditional: 0, positive unconditional: 384, negative: 93, negative conditional: 0, negative unconditional: 93, unknown: 735, unknown conditional: 0, unknown unconditional: 735] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L717] 0 _Bool x$flush_delayed; [L718] 0 int x$mem_tmp; [L719] 0 _Bool x$r_buff0_thd0; [L720] 0 _Bool x$r_buff0_thd1; [L721] 0 _Bool x$r_buff0_thd2; [L722] 0 _Bool x$r_buff1_thd0; [L723] 0 _Bool x$r_buff1_thd1; [L724] 0 _Bool x$r_buff1_thd2; [L725] 0 _Bool x$read_delayed; [L726] 0 int *x$read_delayed_var; [L727] 0 int x$w_buff0; [L728] 0 _Bool x$w_buff0_used; [L729] 0 int x$w_buff1; [L730] 0 _Bool x$w_buff1_used; [L732] 0 int y = 0; [L733] 0 _Bool weak$$choice0; [L734] 0 _Bool weak$$choice2; [L800] 0 pthread_t t1587; [L801] FCALL, FORK 0 pthread_create(&t1587, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L802] 0 pthread_t t1588; [L803] FCALL, FORK 0 pthread_create(&t1588, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L758] 2 x$w_buff1 = x$w_buff0 [L759] 2 x$w_buff0 = 2 [L760] 2 x$w_buff1_used = x$w_buff0_used [L761] 2 x$w_buff0_used = (_Bool)1 [L18] COND FALSE 2 !(!expression) [L763] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L764] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L765] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L766] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L769] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L772] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L775] 2 __unbuffered_p1_EBX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L738] 1 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L741] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L778] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L778] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L779] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L779] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L780] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L780] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L781] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L781] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L782] EXPR 2 x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L782] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L744] EXPR 1 x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x [L744] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L744] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L745] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L745] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L746] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L746] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L747] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L747] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L748] EXPR 1 x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L748] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L753] 1 return 0; [L785] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L787] 2 return 0; [L805] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L3] COND FALSE 0 !(!cond) [L809] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L809] EXPR 0 x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x [L809] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L809] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L810] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L810] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L811] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L811] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L812] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L812] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L813] EXPR 0 x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L813] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 [L816] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L817] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L818] 0 x$flush_delayed = weak$$choice2 [L819] 0 x$mem_tmp = x [L820] EXPR 0 !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L820] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L821] EXPR 0 weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L821] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L822] EXPR 0 weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L822] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L823] EXPR 0 weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L823] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L824] EXPR 0 weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L824] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L825] EXPR 0 weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L825] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L826] EXPR 0 weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L826] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L827] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 1) [L828] EXPR 0 x$flush_delayed ? x$mem_tmp : x [L828] 0 x = x$flush_delayed ? x$mem_tmp : x [L829] 0 x$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=255, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9716.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 13.8ms, AutomataDifference: 469.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7635.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 171 SDtfs, 142 SDslu, 279 SDs, 0 SdLazy, 147 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 214.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 348.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=0, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 100.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.3ms SsaConstructionTime, 423.9ms SatisfiabilityAnalysisTime, 757.8ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 585 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...