/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/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:25:30,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:25:30,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:25:30,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:25:30,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:25:30,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:25:30,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:25:30,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:25:30,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:25:30,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:25:30,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:25:30,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:25:30,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:25:30,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:25:30,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:25:30,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:25:30,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:25:30,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:25:30,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:25:30,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:25:30,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:25:30,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:25:30,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:25:30,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:25:30,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:25:30,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:25:30,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:25:30,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:25:30,724 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 11:25:30,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:25:30,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:25:30,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:25:30,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:25:30,749 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:25:30,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:25:30,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:25:30,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:25:30,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:25:30,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:25:30,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:25:30,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:25:30,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:25:30,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:25:30,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:25:30,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:25:31,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:25:31,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:25:31,004 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:25:31,005 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:25:31,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-03-11 11:25:31,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9347e2728/36a11d4710c947af9948a24568384093/FLAG4aef3f09d [2021-03-11 11:25:31,538 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:25:31,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-03-11 11:25:31,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9347e2728/36a11d4710c947af9948a24568384093/FLAG4aef3f09d [2021-03-11 11:25:31,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9347e2728/36a11d4710c947af9948a24568384093 [2021-03-11 11:25:31,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:25:31,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:25:31,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:25:31,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:25:31,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:25:31,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:31,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146e3325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31, skipping insertion in model container [2021-03-11 11:25:31,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:31,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:25:31,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:25:31,754 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/safe025_pso.opt.i[949,962] [2021-03-11 11:25:31,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:25:31,854 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:25:31,871 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/safe025_pso.opt.i[949,962] [2021-03-11 11:25:31,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:25:31,961 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:25:31,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31 WrapperNode [2021-03-11 11:25:31,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:25:31,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:25:31,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:25:31,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:25:31,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:31,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:25:32,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:25:32,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:25:32,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:25:32,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (1/1) ... [2021-03-11 11:25:32,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:25:32,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:25:32,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:25:32,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:25:32,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (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 11:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:25:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:25:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:25:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:25:32,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:25:32,098 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 11:25:32,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:25:32,299 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:25:32,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:25:32 BoogieIcfgContainer [2021-03-11 11:25:32,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:25:32,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:25:32,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:25:32,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:25:32,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:25:31" (1/3) ... [2021-03-11 11:25:32,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4e49ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:25:32, skipping insertion in model container [2021-03-11 11:25:32,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:25:31" (2/3) ... [2021-03-11 11:25:32,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4e49ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:25:32, skipping insertion in model container [2021-03-11 11:25:32,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:25:32" (3/3) ... [2021-03-11 11:25:32,305 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2021-03-11 11:25:32,325 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:25:32,325 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:25:32,327 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:25:32,328 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:25:32,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,348 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,348 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,350 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,353 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,353 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,353 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,358 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,358 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,358 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,358 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:25:32,359 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:25:32,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:25:32,381 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:25:32,382 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:25:32,382 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:25:32,382 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:25:32,382 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:25:32,382 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:25:32,382 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:25:32,382 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:25:32,390 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:25:32,396 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-03-11 11:25:32,398 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-03-11 11:25:32,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 11:25:32,447 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 11:25:32,448 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:25:32,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 11:25:32,453 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-11 11:25:34,126 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-11 11:25:34,332 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-11 11:25:34,390 INFO L131 LiptonReduction]: Checked pairs total: 2438 [2021-03-11 11:25:34,390 INFO L133 LiptonReduction]: Total number of compositions: 60 [2021-03-11 11:25:34,398 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-03-11 11:25:34,415 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 11:25:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 11:25:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:25:34,424 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:34,425 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:34,425 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:34,430 INFO L82 PathProgramCache]: Analyzing trace with hash 951305922, now seen corresponding path program 1 times [2021-03-11 11:25:34,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:34,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140602434] [2021-03-11 11:25:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:34,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:34,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:34,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:34,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:34,535 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 11:25:34,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140602434] [2021-03-11 11:25:34,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:34,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:25:34,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350499354] [2021-03-11 11:25:34,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:25:34,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:34,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:25:34,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:25:34,549 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 11:25:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:34,565 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-03-11 11:25:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:25:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 11:25:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:34,575 INFO L225 Difference]: With dead ends: 362 [2021-03-11 11:25:34,575 INFO L226 Difference]: Without dead ends: 298 [2021-03-11 11:25:34,576 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:25:34,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-03-11 11:25:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-03-11 11:25:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 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 11:25:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-03-11 11:25:34,617 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-03-11 11:25:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:34,617 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-03-11 11:25:34,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 11:25:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-03-11 11:25:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:25:34,619 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:34,619 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:34,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:25:34,620 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:34,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:34,620 INFO L82 PathProgramCache]: Analyzing trace with hash -574301260, now seen corresponding path program 1 times [2021-03-11 11:25:34,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:34,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232778287] [2021-03-11 11:25:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:34,707 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:25:34,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:25:34,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:34,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:25:34,727 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 11:25:34,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232778287] [2021-03-11 11:25:34,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:34,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:25:34,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105410543] [2021-03-11 11:25:34,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:25:34,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:34,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:25:34,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:25:34,730 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 11:25:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:34,784 INFO L93 Difference]: Finished difference Result 524 states and 1424 transitions. [2021-03-11 11:25:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:25:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-03-11 11:25:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:34,789 INFO L225 Difference]: With dead ends: 524 [2021-03-11 11:25:34,789 INFO L226 Difference]: Without dead ends: 410 [2021-03-11 11:25:34,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:25:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-03-11 11:25:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 342. [2021-03-11 11:25:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.7976539589442817) internal successors, (954), 341 states have internal predecessors, (954), 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 11:25:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 954 transitions. [2021-03-11 11:25:34,818 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 954 transitions. Word has length 9 [2021-03-11 11:25:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:34,818 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 954 transitions. [2021-03-11 11:25:34,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 11:25:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 954 transitions. [2021-03-11 11:25:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:25:34,824 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:34,824 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:34,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:25:34,824 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:34,831 INFO L82 PathProgramCache]: Analyzing trace with hash -624008352, now seen corresponding path program 1 times [2021-03-11 11:25:34,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:34,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118483493] [2021-03-11 11:25:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:34,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:34,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:34,892 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:25:34,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:25:34,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:34,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:25:34,907 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 11:25:34,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118483493] [2021-03-11 11:25:34,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:34,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:25:34,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810121226] [2021-03-11 11:25:34,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:25:34,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:34,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:25:34,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:25:34,910 INFO L87 Difference]: Start difference. First operand 342 states and 954 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:25:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:34,956 INFO L93 Difference]: Finished difference Result 430 states and 1130 transitions. [2021-03-11 11:25:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:25:34,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-03-11 11:25:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:34,958 INFO L225 Difference]: With dead ends: 430 [2021-03-11 11:25:34,958 INFO L226 Difference]: Without dead ends: 362 [2021-03-11 11:25:34,958 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:25:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-03-11 11:25:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 306. [2021-03-11 11:25:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 2.7540983606557377) internal successors, (840), 305 states have internal predecessors, (840), 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 11:25:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 840 transitions. [2021-03-11 11:25:34,971 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 840 transitions. Word has length 10 [2021-03-11 11:25:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:34,971 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 840 transitions. [2021-03-11 11:25:34,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:25:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 840 transitions. [2021-03-11 11:25:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:25:34,975 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:34,976 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:34,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:25:34,976 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash -643507704, now seen corresponding path program 1 times [2021-03-11 11:25:34,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:34,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240161847] [2021-03-11 11:25:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,037 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:25:35,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:25:35,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:25:35,048 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 11:25:35,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240161847] [2021-03-11 11:25:35,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:25:35,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434235593] [2021-03-11 11:25:35,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:25:35,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:25:35,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:25:35,049 INFO L87 Difference]: Start difference. First operand 306 states and 840 transitions. Second operand has 5 states, 4 states have (on average 2.75) 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 11:25:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,095 INFO L93 Difference]: Finished difference Result 382 states and 996 transitions. [2021-03-11 11:25:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:25:35,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) 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 11:25:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,099 INFO L225 Difference]: With dead ends: 382 [2021-03-11 11:25:35,099 INFO L226 Difference]: Without dead ends: 338 [2021-03-11 11:25:35,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:25:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-03-11 11:25:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 274. [2021-03-11 11:25:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.7545787545787546) internal successors, (752), 273 states have internal predecessors, (752), 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 11:25:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 752 transitions. [2021-03-11 11:25:35,105 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 752 transitions. Word has length 11 [2021-03-11 11:25:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,105 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 752 transitions. [2021-03-11 11:25:35,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) 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 11:25:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 752 transitions. [2021-03-11 11:25:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:25:35,106 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:35,106 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:35,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:25:35,106 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash 534726346, now seen corresponding path program 1 times [2021-03-11 11:25:35,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:35,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185667920] [2021-03-11 11:25:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:35,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:25:35,149 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 11:25:35,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185667920] [2021-03-11 11:25:35,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:25:35,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823854987] [2021-03-11 11:25:35,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:25:35,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:25:35,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:25:35,151 INFO L87 Difference]: Start difference. First operand 274 states and 752 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 11:25:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,192 INFO L93 Difference]: Finished difference Result 394 states and 1039 transitions. [2021-03-11 11:25:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 11:25:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 11:25:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,193 INFO L225 Difference]: With dead ends: 394 [2021-03-11 11:25:35,193 INFO L226 Difference]: Without dead ends: 242 [2021-03-11 11:25:35,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:25:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-03-11 11:25:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 226. [2021-03-11 11:25:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.631111111111111) internal successors, (592), 225 states have internal predecessors, (592), 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 11:25:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 592 transitions. [2021-03-11 11:25:35,198 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 592 transitions. Word has length 11 [2021-03-11 11:25:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,198 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 592 transitions. [2021-03-11 11:25:35,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 11:25:35,198 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 592 transitions. [2021-03-11 11:25:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:25:35,198 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:35,198 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:35,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:25:35,199 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1525559180, now seen corresponding path program 1 times [2021-03-11 11:25:35,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:35,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827525765] [2021-03-11 11:25:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:25:35,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:35,235 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 11:25:35,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827525765] [2021-03-11 11:25:35,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:25:35,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388813565] [2021-03-11 11:25:35,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:25:35,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:25:35,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:25:35,237 INFO L87 Difference]: Start difference. First operand 226 states and 592 transitions. Second operand has 4 states, 4 states have (on average 3.0) 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 11:25:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,256 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2021-03-11 11:25:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:25:35,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) 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 11:25:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,257 INFO L225 Difference]: With dead ends: 254 [2021-03-11 11:25:35,257 INFO L226 Difference]: Without dead ends: 186 [2021-03-11 11:25:35,258 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:25:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-03-11 11:25:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-03-11 11:25:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.3567567567567567) internal successors, (436), 185 states have internal predecessors, (436), 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 11:25:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 436 transitions. [2021-03-11 11:25:35,261 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 436 transitions. Word has length 12 [2021-03-11 11:25:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,261 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 436 transitions. [2021-03-11 11:25:35,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) 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 11:25:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 436 transitions. [2021-03-11 11:25:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:25:35,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:35,262 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:35,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:25:35,262 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1580353925, now seen corresponding path program 1 times [2021-03-11 11:25:35,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:35,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774241264] [2021-03-11 11:25:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:25:35,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:35,292 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 11:25:35,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774241264] [2021-03-11 11:25:35,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:25:35,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607644629] [2021-03-11 11:25:35,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:25:35,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:25:35,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:25:35,293 INFO L87 Difference]: Start difference. First operand 186 states and 436 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 11:25:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,315 INFO L93 Difference]: Finished difference Result 175 states and 379 transitions. [2021-03-11 11:25:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:25:35,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 11:25:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,316 INFO L225 Difference]: With dead ends: 175 [2021-03-11 11:25:35,316 INFO L226 Difference]: Without dead ends: 135 [2021-03-11 11:25:35,317 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:25:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-03-11 11:25:35,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-03-11 11:25:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 2.1343283582089554) internal successors, (286), 134 states have internal predecessors, (286), 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 11:25:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 286 transitions. [2021-03-11 11:25:35,319 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 286 transitions. Word has length 13 [2021-03-11 11:25:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,319 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 286 transitions. [2021-03-11 11:25:35,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 11:25:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 286 transitions. [2021-03-11 11:25:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:25:35,320 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:35,320 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:25:35,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:25:35,320 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1650146569, now seen corresponding path program 1 times [2021-03-11 11:25:35,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:35,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281993431] [2021-03-11 11:25:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:25:35,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:35,366 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 11:25:35,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281993431] [2021-03-11 11:25:35,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:25:35,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598299519] [2021-03-11 11:25:35,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:25:35,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:25:35,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:25:35,367 INFO L87 Difference]: Start difference. First operand 135 states and 286 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 11:25:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,399 INFO L93 Difference]: Finished difference Result 124 states and 262 transitions. [2021-03-11 11:25:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:25:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 11:25:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,400 INFO L225 Difference]: With dead ends: 124 [2021-03-11 11:25:35,400 INFO L226 Difference]: Without dead ends: 105 [2021-03-11 11:25:35,401 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:25:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-03-11 11:25:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2021-03-11 11:25:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.15) internal successors, (215), 100 states have internal predecessors, (215), 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 11:25:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 215 transitions. [2021-03-11 11:25:35,403 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 215 transitions. Word has length 15 [2021-03-11 11:25:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,403 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 215 transitions. [2021-03-11 11:25:35,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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 11:25:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 215 transitions. [2021-03-11 11:25:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 11:25:35,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:35,404 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 11:25:35,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:25:35,404 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:35,404 INFO L82 PathProgramCache]: Analyzing trace with hash -255451769, now seen corresponding path program 1 times [2021-03-11 11:25:35,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:35,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527090976] [2021-03-11 11:25:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:35,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,444 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:25:35,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:25:35,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:25:35,456 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 11:25:35,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527090976] [2021-03-11 11:25:35,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:25:35,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362112035] [2021-03-11 11:25:35,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:25:35,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:25:35,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:25:35,457 INFO L87 Difference]: Start difference. First operand 101 states and 215 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 11:25:35,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,492 INFO L93 Difference]: Finished difference Result 135 states and 277 transitions. [2021-03-11 11:25:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:25:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 11:25:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,493 INFO L225 Difference]: With dead ends: 135 [2021-03-11 11:25:35,493 INFO L226 Difference]: Without dead ends: 65 [2021-03-11 11:25:35,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:25:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-03-11 11:25:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2021-03-11 11:25:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.8214285714285714) internal successors, (102), 56 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 11:25:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 102 transitions. [2021-03-11 11:25:35,495 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 102 transitions. Word has length 18 [2021-03-11 11:25:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,495 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 102 transitions. [2021-03-11 11:25:35,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 11:25:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 102 transitions. [2021-03-11 11:25:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 11:25:35,495 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:35,495 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 11:25:35,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:25:35,495 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:35,496 INFO L82 PathProgramCache]: Analyzing trace with hash -433943967, now seen corresponding path program 2 times [2021-03-11 11:25:35,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:35,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021420286] [2021-03-11 11:25:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:25:35,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,521 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:25:35,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:25:35,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:25:35,533 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 11:25:35,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021420286] [2021-03-11 11:25:35,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:25:35,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669728805] [2021-03-11 11:25:35,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:25:35,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:25:35,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:25:35,534 INFO L87 Difference]: Start difference. First operand 57 states and 102 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 11:25:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,573 INFO L93 Difference]: Finished difference Result 85 states and 151 transitions. [2021-03-11 11:25:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:25:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 11:25:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,574 INFO L225 Difference]: With dead ends: 85 [2021-03-11 11:25:35,574 INFO L226 Difference]: Without dead ends: 40 [2021-03-11 11:25:35,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:25:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-03-11 11:25:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2021-03-11 11:25:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:25:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-03-11 11:25:35,575 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 18 [2021-03-11 11:25:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,575 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-03-11 11:25:35,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 11:25:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-03-11 11:25:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 11:25:35,576 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:25:35,576 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 11:25:35,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 11:25:35,576 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:25:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:25:35,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1005704407, now seen corresponding path program 3 times [2021-03-11 11:25:35,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:25:35,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867885735] [2021-03-11 11:25:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:25:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:25:35,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:25:35,600 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 11:25:35,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 11:25:35,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:25:35,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:25:35,612 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 11:25:35,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867885735] [2021-03-11 11:25:35,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:25:35,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:25:35,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737804684] [2021-03-11 11:25:35,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:25:35,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:25:35,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:25:35,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:25:35,613 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 11:25:35,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:25:35,628 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2021-03-11 11:25:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:25:35,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 11:25:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:25:35,628 INFO L225 Difference]: With dead ends: 35 [2021-03-11 11:25:35,628 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:25:35,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-11 11:25:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:25:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:25:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:25:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:25:35,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-03-11 11:25:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:25:35,629 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:25:35,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 11:25:35,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:25:35,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:25:35,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 11:25:35,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:25:35 BasicIcfg [2021-03-11 11:25:35,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:25:35,632 INFO L168 Benchmark]: Toolchain (without parser) took 4060.09 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 237.4 MB in the beginning and 187.0 MB in the end (delta: 50.4 MB). Peak memory consumption was 253.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:25:35,632 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 238.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:25:35,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.91 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 236.7 MB in the beginning and 345.2 MB in the end (delta: -108.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:25:35,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 381.7 MB. Free memory was 345.2 MB in the beginning and 343.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:25:35,633 INFO L168 Benchmark]: Boogie Preprocessor took 25.88 ms. Allocated memory is still 381.7 MB. Free memory was 343.1 MB in the beginning and 341.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:25:35,633 INFO L168 Benchmark]: RCFGBuilder took 263.42 ms. Allocated memory is still 381.7 MB. Free memory was 341.7 MB in the beginning and 319.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:25:35,633 INFO L168 Benchmark]: TraceAbstraction took 3330.38 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 319.2 MB in the beginning and 187.0 MB in the end (delta: 132.2 MB). Peak memory consumption was 210.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:25:35,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 238.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 384.91 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 236.7 MB in the beginning and 345.2 MB in the end (delta: -108.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 381.7 MB. Free memory was 345.2 MB in the beginning and 343.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.88 ms. Allocated memory is still 381.7 MB. Free memory was 343.1 MB in the beginning and 341.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 263.42 ms. Allocated memory is still 381.7 MB. Free memory was 341.7 MB in the beginning and 319.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3330.38 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 319.2 MB in the beginning and 187.0 MB in the end (delta: 132.2 MB). Peak memory consumption was 210.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1992.4ms, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2438 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1299, positive: 1220, positive conditional: 0, positive unconditional: 1220, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 868, positive: 838, positive conditional: 0, positive unconditional: 838, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 868, positive: 831, positive conditional: 0, positive unconditional: 831, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 101, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1299, positive: 382, positive conditional: 0, positive unconditional: 382, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 868, unknown conditional: 0, unknown unconditional: 868] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3249.6ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 22.1ms, AutomataDifference: 413.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2033.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 260 SDtfs, 287 SDslu, 458 SDs, 0 SdLazy, 227 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 229.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 93.8ms AutomataMinimizationTime, 11 MinimizatonAttempts, 220 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.1ms SsaConstructionTime, 139.8ms SatisfiabilityAnalysisTime, 393.1ms InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...