/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/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:24:43,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:24:43,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:24:43,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:24:43,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:24:43,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:24:43,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:24:43,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:24:43,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:24:43,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:24:44,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:24:44,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:24:44,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:24:44,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:24:44,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:24:44,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:24:44,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:24:44,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:24:44,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:24:44,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:24:44,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:24:44,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:24:44,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:24:44,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:24:44,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 11:24:44,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 11:24:44,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 11:24:44,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 11:24:44,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 11:24:44,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 11:24:44,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:24:44,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:24:44,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:24:44,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:24:44,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:24:44,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:24:44,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:24:44,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:24:44,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:24:44,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:24:44,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:24:44,016 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 11:24:44,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:24:44,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:24:44,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:24:44,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:24:44,039 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:24:44,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:24:44,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:24:44,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:24:44,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:24:44,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:24:44,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:24:44,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:24:44,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:24:44,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:24:44,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:24:44,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:24:44,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:24:44,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:24:44,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:24:44,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:24:44,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:24:44,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:24:44,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:24:44,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:24:44,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:24:44,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:24:44,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:24:44,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:24:44,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:24:44,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:24:44,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:24:44,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:24:44,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:24:44,295 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:24:44,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-11 11:24:44,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32fb8549b/c3e914ec93f7451e8d4c3cb917a81604/FLAGfec087a23 [2021-03-11 11:24:44,710 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:24:44,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-11 11:24:44,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32fb8549b/c3e914ec93f7451e8d4c3cb917a81604/FLAGfec087a23 [2021-03-11 11:24:45,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32fb8549b/c3e914ec93f7451e8d4c3cb917a81604 [2021-03-11 11:24:45,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:24:45,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:24:45,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:24:45,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:24:45,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:24:45,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259d3a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45, skipping insertion in model container [2021-03-11 11:24:45,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:24:45,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:24:45,232 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/safe021_tso.opt.i[949,962] [2021-03-11 11:24:45,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:24:45,324 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:24:45,339 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/safe021_tso.opt.i[949,962] [2021-03-11 11:24:45,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:24:45,425 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:24:45,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45 WrapperNode [2021-03-11 11:24:45,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:24:45,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:24:45,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:24:45,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:24:45,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:24:45,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:24:45,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:24:45,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:24:45,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (1/1) ... [2021-03-11 11:24:45,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:24:45,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:24:45,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:24:45,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:24:45,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (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 11:24:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:24:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:24:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:24:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:24:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:24:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:24:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:24:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:24:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:24:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:24:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:24:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:24:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:24:45,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:24:45,542 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 11:24:45,804 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:24:45,805 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:24:45,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:24:45 BoogieIcfgContainer [2021-03-11 11:24:45,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:24:45,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:24:45,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:24:45,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:24:45,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:24:45" (1/3) ... [2021-03-11 11:24:45,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ec61da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:24:45, skipping insertion in model container [2021-03-11 11:24:45,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:45" (2/3) ... [2021-03-11 11:24:45,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ec61da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:24:45, skipping insertion in model container [2021-03-11 11:24:45,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:24:45" (3/3) ... [2021-03-11 11:24:45,810 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2021-03-11 11:24:45,813 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:24:45,813 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:24:45,816 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:24:45,816 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:24:45,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,837 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,841 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,841 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,845 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,845 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,847 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,847 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,847 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:45,848 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:24:45,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:24:45,870 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:24:45,870 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:24:45,870 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:24:45,870 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:24:45,870 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:24:45,870 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:24:45,870 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:24:45,870 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:24:45,877 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:24:45,883 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-03-11 11:24:45,885 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-03-11 11:24:45,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 11:24:45,910 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 11:24:45,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:24:45,912 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 49 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 11:24:45,914 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-11 11:24:47,986 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 11:24:48,175 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 11:24:48,280 INFO L131 LiptonReduction]: Checked pairs total: 2776 [2021-03-11 11:24:48,281 INFO L133 LiptonReduction]: Total number of compositions: 64 [2021-03-11 11:24:48,286 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-03-11 11:24:48,300 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 296 states have (on average 2.918918918918919) 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 11:24:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 2.918918918918919) 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 11:24:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:24:48,305 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:48,305 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:48,306 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash -143796662, now seen corresponding path program 1 times [2021-03-11 11:24:48,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:48,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125217056] [2021-03-11 11:24:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:48,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:48,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:48,453 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 11:24:48,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125217056] [2021-03-11 11:24:48,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:48,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 11:24:48,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737174292] [2021-03-11 11:24:48,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:24:48,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:48,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:24:48,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:24:48,473 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 2.918918918918919) 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) Second operand has 3 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 11:24:48,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:48,496 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2021-03-11 11:24:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:24:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 11:24:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:48,504 INFO L225 Difference]: With dead ends: 290 [2021-03-11 11:24:48,504 INFO L226 Difference]: Without dead ends: 226 [2021-03-11 11:24:48,505 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:24:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-03-11 11:24:48,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-03-11 11:24:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.7822222222222224) internal successors, (626), 225 states have internal predecessors, (626), 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 11:24:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2021-03-11 11:24:48,546 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2021-03-11 11:24:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:48,550 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2021-03-11 11:24:48,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 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 11:24:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2021-03-11 11:24:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:24:48,552 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:48,552 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:48,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:24:48,553 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash -162745108, now seen corresponding path program 1 times [2021-03-11 11:24:48,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:48,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163019916] [2021-03-11 11:24:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:48,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:48,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:48,634 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:24:48,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:24:48,643 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 11:24:48,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163019916] [2021-03-11 11:24:48,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:48,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:24:48,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068907048] [2021-03-11 11:24:48,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:24:48,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:48,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:24:48,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:48,645 INFO L87 Difference]: Start difference. First operand 226 states and 626 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 11:24:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:48,667 INFO L93 Difference]: Finished difference Result 278 states and 727 transitions. [2021-03-11 11:24:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:24:48,671 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 11:24:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:48,673 INFO L225 Difference]: With dead ends: 278 [2021-03-11 11:24:48,673 INFO L226 Difference]: Without dead ends: 254 [2021-03-11 11:24:48,674 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-03-11 11:24:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2021-03-11 11:24:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.6808510638297873) internal successors, (630), 235 states have internal predecessors, (630), 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 11:24:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 630 transitions. [2021-03-11 11:24:48,691 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 630 transitions. Word has length 9 [2021-03-11 11:24:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:48,691 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 630 transitions. [2021-03-11 11:24:48,691 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 11:24:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 630 transitions. [2021-03-11 11:24:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:24:48,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:48,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:48,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:24:48,692 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:48,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:48,692 INFO L82 PathProgramCache]: Analyzing trace with hash -750131899, now seen corresponding path program 1 times [2021-03-11 11:24:48,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:48,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052041857] [2021-03-11 11:24:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:48,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:48,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:48,742 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:24:48,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:24:48,746 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 11:24:48,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052041857] [2021-03-11 11:24:48,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:48,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:24:48,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235615667] [2021-03-11 11:24:48,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:24:48,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:48,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:24:48,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:48,753 INFO L87 Difference]: Start difference. First operand 236 states and 630 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 11:24:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:48,779 INFO L93 Difference]: Finished difference Result 300 states and 784 transitions. [2021-03-11 11:24:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:24:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 11:24:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:48,782 INFO L225 Difference]: With dead ends: 300 [2021-03-11 11:24:48,782 INFO L226 Difference]: Without dead ends: 300 [2021-03-11 11:24:48,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-03-11 11:24:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 242. [2021-03-11 11:24:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.6929460580912865) internal successors, (649), 241 states have internal predecessors, (649), 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 11:24:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 649 transitions. [2021-03-11 11:24:48,793 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 649 transitions. Word has length 10 [2021-03-11 11:24:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:48,793 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 649 transitions. [2021-03-11 11:24:48,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 11:24:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 649 transitions. [2021-03-11 11:24:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:24:48,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:48,794 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:48,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:24:48,794 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:48,799 INFO L82 PathProgramCache]: Analyzing trace with hash -749665969, now seen corresponding path program 2 times [2021-03-11 11:24:48,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:48,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845412202] [2021-03-11 11:24:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:48,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:48,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:48,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:48,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:48,842 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:24:48,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:24:48,847 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 11:24:48,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845412202] [2021-03-11 11:24:48,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:48,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:24:48,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258484399] [2021-03-11 11:24:48,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:24:48,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:48,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:24:48,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:48,849 INFO L87 Difference]: Start difference. First operand 242 states and 649 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 11:24:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:48,864 INFO L93 Difference]: Finished difference Result 294 states and 744 transitions. [2021-03-11 11:24:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:24:48,865 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 11:24:48,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:48,865 INFO L225 Difference]: With dead ends: 294 [2021-03-11 11:24:48,866 INFO L226 Difference]: Without dead ends: 166 [2021-03-11 11:24:48,866 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:24:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-03-11 11:24:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2021-03-11 11:24:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.4444444444444446) internal successors, (374), 153 states have internal predecessors, (374), 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 11:24:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 374 transitions. [2021-03-11 11:24:48,872 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 374 transitions. Word has length 10 [2021-03-11 11:24:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:48,872 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 374 transitions. [2021-03-11 11:24:48,872 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 11:24:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 374 transitions. [2021-03-11 11:24:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:24:48,873 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:48,873 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:48,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:24:48,873 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1780732215, now seen corresponding path program 1 times [2021-03-11 11:24:48,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:48,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803671956] [2021-03-11 11:24:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:48,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:48,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:48,900 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-03-11 11:24:48,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:24:48,904 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 11:24:48,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803671956] [2021-03-11 11:24:48,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:48,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:24:48,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873079728] [2021-03-11 11:24:48,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:24:48,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:24:48,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:48,906 INFO L87 Difference]: Start difference. First operand 154 states and 374 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11:24:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:48,922 INFO L93 Difference]: Finished difference Result 176 states and 391 transitions. [2021-03-11 11:24:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:24:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11:24:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:48,923 INFO L225 Difference]: With dead ends: 176 [2021-03-11 11:24:48,923 INFO L226 Difference]: Without dead ends: 132 [2021-03-11 11:24:48,923 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-03-11 11:24:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-03-11 11:24:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.236641221374046) internal successors, (293), 131 states have internal predecessors, (293), 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 11:24:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 293 transitions. [2021-03-11 11:24:48,927 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 293 transitions. Word has length 11 [2021-03-11 11:24:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:48,927 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 293 transitions. [2021-03-11 11:24:48,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11:24:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 293 transitions. [2021-03-11 11:24:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:24:48,928 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:48,928 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:48,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:24:48,928 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:48,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:48,928 INFO L82 PathProgramCache]: Analyzing trace with hash 631796534, now seen corresponding path program 1 times [2021-03-11 11:24:48,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:48,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490212299] [2021-03-11 11:24:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:48,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:48,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:48,953 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:24:48,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:24:48,957 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:24:48,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:24:48,962 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 11:24:48,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490212299] [2021-03-11 11:24:48,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:48,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:24:48,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874384759] [2021-03-11 11:24:48,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:24:48,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:48,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:24:48,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:48,963 INFO L87 Difference]: Start difference. First operand 132 states and 293 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 11:24:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:48,983 INFO L93 Difference]: Finished difference Result 130 states and 267 transitions. [2021-03-11 11:24:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:24:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 11:24:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:48,984 INFO L225 Difference]: With dead ends: 130 [2021-03-11 11:24:48,984 INFO L226 Difference]: Without dead ends: 102 [2021-03-11 11:24:48,984 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:24:48,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-03-11 11:24:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-03-11 11:24:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.0495049504950495) internal successors, (207), 101 states have internal predecessors, (207), 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 11:24:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 207 transitions. [2021-03-11 11:24:48,987 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 207 transitions. Word has length 12 [2021-03-11 11:24:48,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:48,987 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 207 transitions. [2021-03-11 11:24:48,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 11:24:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 207 transitions. [2021-03-11 11:24:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:24:48,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:48,988 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:48,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:24:48,988 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:48,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1554930100, now seen corresponding path program 1 times [2021-03-11 11:24:48,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:48,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762936181] [2021-03-11 11:24:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:49,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:49,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:49,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:49,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:49,032 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 11:24:49,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:24:49,038 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:24:49,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:24:49,046 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 11:24:49,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762936181] [2021-03-11 11:24:49,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:49,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:24:49,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131517231] [2021-03-11 11:24:49,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:24:49,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:49,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:24:49,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:24:49,048 INFO L87 Difference]: Start difference. First operand 102 states and 207 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:49,075 INFO L93 Difference]: Finished difference Result 97 states and 195 transitions. [2021-03-11 11:24:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:24:49,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-11 11:24:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:49,078 INFO L225 Difference]: With dead ends: 97 [2021-03-11 11:24:49,078 INFO L226 Difference]: Without dead ends: 80 [2021-03-11 11:24:49,082 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 11:24:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-03-11 11:24:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-03-11 11:24:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.08) internal successors, (156), 75 states have internal predecessors, (156), 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 11:24:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 156 transitions. [2021-03-11 11:24:49,084 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 156 transitions. Word has length 14 [2021-03-11 11:24:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:49,085 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 156 transitions. [2021-03-11 11:24:49,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 156 transitions. [2021-03-11 11:24:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-11 11:24:49,085 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:49,085 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:49,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:24:49,085 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash -98781908, now seen corresponding path program 1 times [2021-03-11 11:24:49,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:49,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393953143] [2021-03-11 11:24:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:49,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:24:49,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:49,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:49,116 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 11:24:49,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393953143] [2021-03-11 11:24:49,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:49,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:24:49,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355710504] [2021-03-11 11:24:49,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:24:49,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:49,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:24:49,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:24:49,117 INFO L87 Difference]: Start difference. First operand 76 states and 156 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 11:24:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:49,122 INFO L93 Difference]: Finished difference Result 107 states and 214 transitions. [2021-03-11 11:24:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:24:49,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-03-11 11:24:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:49,123 INFO L225 Difference]: With dead ends: 107 [2021-03-11 11:24:49,123 INFO L226 Difference]: Without dead ends: 54 [2021-03-11 11:24:49,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:24:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-03-11 11:24:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-03-11 11:24:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 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 11:24:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-03-11 11:24:49,124 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2021-03-11 11:24:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:49,125 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-03-11 11:24:49,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 11:24:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-03-11 11:24:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-11 11:24:49,125 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:49,125 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:49,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:24:49,125 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:49,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:49,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2133296396, now seen corresponding path program 2 times [2021-03-11 11:24:49,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:49,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364312583] [2021-03-11 11:24:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:49,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:49,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:24:49,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:49,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:49,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:49,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:49,162 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 11:24:49,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364312583] [2021-03-11 11:24:49,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:49,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:24:49,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016959310] [2021-03-11 11:24:49,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:24:49,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:49,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:24:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:49,165 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 11:24:49,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:49,172 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2021-03-11 11:24:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:24:49,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-03-11 11:24:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:49,172 INFO L225 Difference]: With dead ends: 53 [2021-03-11 11:24:49,172 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:24:49,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:24:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:24:49,173 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 11:24:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:24:49,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-03-11 11:24:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:49,173 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:24:49,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 11:24:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:24:49,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:24:49,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:24:49,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:24:49 BasicIcfg [2021-03-11 11:24:49,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:24:49,176 INFO L168 Benchmark]: Toolchain (without parser) took 4092.36 ms. Allocated memory was 360.7 MB in the beginning and 455.1 MB in the end (delta: 94.4 MB). Free memory was 323.8 MB in the beginning and 230.9 MB in the end (delta: 92.9 MB). Peak memory consumption was 189.3 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:49,177 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 360.7 MB. Free memory is still 342.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:24:49,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.55 ms. Allocated memory is still 360.7 MB. Free memory was 323.1 MB in the beginning and 324.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:49,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.53 ms. Allocated memory is still 360.7 MB. Free memory was 324.2 MB in the beginning and 322.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:49,180 INFO L168 Benchmark]: Boogie Preprocessor took 12.90 ms. Allocated memory is still 360.7 MB. Free memory was 322.1 MB in the beginning and 321.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:49,180 INFO L168 Benchmark]: RCFGBuilder took 324.46 ms. Allocated memory is still 360.7 MB. Free memory was 321.0 MB in the beginning and 296.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:49,182 INFO L168 Benchmark]: TraceAbstraction took 3369.06 ms. Allocated memory was 360.7 MB in the beginning and 455.1 MB in the end (delta: 94.4 MB). Free memory was 295.8 MB in the beginning and 230.9 MB in the end (delta: 65.0 MB). Peak memory consumption was 160.4 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:49,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 360.7 MB. Free memory is still 342.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 335.55 ms. Allocated memory is still 360.7 MB. Free memory was 323.1 MB in the beginning and 324.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.53 ms. Allocated memory is still 360.7 MB. Free memory was 324.2 MB in the beginning and 322.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.90 ms. Allocated memory is still 360.7 MB. Free memory was 322.1 MB in the beginning and 321.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 324.46 ms. Allocated memory is still 360.7 MB. Free memory was 321.0 MB in the beginning and 296.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3369.06 ms. Allocated memory was 360.7 MB in the beginning and 455.1 MB in the end (delta: 94.4 MB). Free memory was 295.8 MB in the beginning and 230.9 MB in the end (delta: 65.0 MB). Peak memory consumption was 160.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2395.7ms, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 64 TotalNumberOfCompositions, 2776 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1363, positive: 1263, positive conditional: 0, positive unconditional: 1263, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 868, positive: 834, positive conditional: 0, positive unconditional: 834, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 868, positive: 828, positive conditional: 0, positive unconditional: 828, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 154, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 127, negative conditional: 0, negative unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1363, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 868, unknown conditional: 0, unknown unconditional: 868] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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: 3305.4ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 10.6ms, AutomataDifference: 212.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2429.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 171 SDtfs, 198 SDslu, 219 SDs, 0 SdLazy, 115 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 75.8ms AutomataMinimizationTime, 9 MinimizatonAttempts, 92 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.9ms SsaConstructionTime, 100.9ms SatisfiabilityAnalysisTime, 325.6ms InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...