/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:53:04,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:53:04,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:53:04,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:53:04,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:53:04,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:53:04,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:53:04,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:53:04,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:53:04,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:53:04,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:53:04,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:53:04,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:53:04,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:53:04,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:53:04,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:53:04,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:53:04,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:53:04,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:53:04,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:53:04,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:53:04,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:53:04,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:53:04,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:53:04,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:53:04,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:53:04,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:53:04,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:53:04,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:53:04,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:53:04,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:53:04,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:53:04,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:53:04,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:53:04,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:53:04,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:53:04,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:53:04,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:53:04,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:53:04,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:53:04,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:53:04,471 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 [2020-11-11 23:53:04,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:53:04,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:53:04,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:53:04,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:53:04,502 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:53:04,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:53:04,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:53:04,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:53:04,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:53:04,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:53:04,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:53:04,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:53:04,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:53:04,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:53:04,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:53:04,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:53:04,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:53:04,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:53:04,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:53:04,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:53:04,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:53:04,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:53:04,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:53:04,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:53:04,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:53:04,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:53:04,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:53:04,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:53:04,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:53:04,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:53:05,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:53:05,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:53:05,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:53:05,039 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:53:05,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-11-11 23:53:05,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86c9de77/bc792e75b54d471e91f15472841a544d/FLAG649d87ff4 [2020-11-11 23:53:05,894 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:53:05,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-11-11 23:53:05,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86c9de77/bc792e75b54d471e91f15472841a544d/FLAG649d87ff4 [2020-11-11 23:53:06,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86c9de77/bc792e75b54d471e91f15472841a544d [2020-11-11 23:53:06,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:53:06,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:53:06,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:53:06,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:53:06,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:53:06,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:06,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7844b9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06, skipping insertion in model container [2020-11-11 23:53:06,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:06,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:53:06,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:53:06,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:53:06,701 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:53:06,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:53:06,932 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:53:06,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06 WrapperNode [2020-11-11 23:53:06,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:53:06,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:53:06,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:53:06,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:53:06,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:06,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:06,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:53:06,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:53:06,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:53:06,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:53:06,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:06,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:06,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:06,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:07,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:07,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:07,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (1/1) ... [2020-11-11 23:53:07,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:53:07,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:53:07,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:53:07,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:53:07,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (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 [2020-11-11 23:53:07,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:53:07,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:53:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:53:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:53:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:53:07,093 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:53:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:53:07,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:53:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:53:07,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:53:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:53:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:53:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:53:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:53:07,100 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 23:53:07,619 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:53:07,619 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:53:07,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:53:07 BoogieIcfgContainer [2020-11-11 23:53:07,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:53:07,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:53:07,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:53:07,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:53:07,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:53:06" (1/3) ... [2020-11-11 23:53:07,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42157d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:53:07, skipping insertion in model container [2020-11-11 23:53:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:53:06" (2/3) ... [2020-11-11 23:53:07,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42157d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:53:07, skipping insertion in model container [2020-11-11 23:53:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:53:07" (3/3) ... [2020-11-11 23:53:07,631 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2020-11-11 23:53:07,647 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:53:07,648 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:53:07,652 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:53:07,653 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:53:07,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,698 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,698 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,699 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,700 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,700 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,702 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,705 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,706 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,714 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,714 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,715 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,718 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,718 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:53:07,722 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:53:07,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:53:07,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:53:07,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:53:07,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:53:07,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:53:07,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:53:07,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:53:07,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:53:07,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:53:07,774 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:53:07,776 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:53:07,779 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:53:07,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 23:53:07,826 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-11 23:53:07,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:53:07,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:53:07,833 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:53:10,898 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-11-11 23:53:11,067 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-11-11 23:53:12,108 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:53:12,366 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:53:13,247 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:53:13,433 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:53:13,852 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:53:14,032 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:53:14,290 INFO L131 LiptonReduction]: Checked pairs total: 2870 [2020-11-11 23:53:14,291 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-11 23:53:14,298 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-11 23:53:14,345 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:53:14,357 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:14,358 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:14,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:14,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2120671033, now seen corresponding path program 1 times [2020-11-11 23:53:14,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:14,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250784457] [2020-11-11 23:53:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:14,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250784457] [2020-11-11 23:53:14,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:14,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:53:14,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485011137] [2020-11-11 23:53:14,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 23:53:14,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:14,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 23:53:14,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:53:14,591 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:14,630 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-11 23:53:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 23:53:14,632 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2020-11-11 23:53:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:14,650 INFO L225 Difference]: With dead ends: 362 [2020-11-11 23:53:14,650 INFO L226 Difference]: Without dead ends: 298 [2020-11-11 23:53:14,651 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:53:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-11 23:53:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-11 23:53:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-11 23:53:14,725 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-11 23:53:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:14,727 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-11 23:53:14,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-11 23:53:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:53:14,729 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:14,729 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:14,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:53:14,729 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:14,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1316261025, now seen corresponding path program 1 times [2020-11-11 23:53:14,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:14,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011798163] [2020-11-11 23:53:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:14,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011798163] [2020-11-11 23:53:14,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:14,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:53:14,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276578852] [2020-11-11 23:53:14,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:53:14,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:14,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:53:14,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:53:14,895 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:14,976 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-11 23:53:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:14,977 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 [2020-11-11 23:53:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:14,980 INFO L225 Difference]: With dead ends: 330 [2020-11-11 23:53:14,980 INFO L226 Difference]: Without dead ends: 266 [2020-11-11 23:53:14,981 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-11 23:53:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-11 23:53:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.8377358490566036) internal successors, (752), 265 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-11 23:53:15,003 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-11 23:53:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:15,003 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-11 23:53:15,003 INFO L482 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) [2020-11-11 23:53:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-11 23:53:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:53:15,005 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:15,005 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:15,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:53:15,006 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:15,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1018022108, now seen corresponding path program 1 times [2020-11-11 23:53:15,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:15,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298009197] [2020-11-11 23:53:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:15,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298009197] [2020-11-11 23:53:15,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:15,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:53:15,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303437322] [2020-11-11 23:53:15,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:53:15,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:15,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:53:15,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:53:15,095 INFO L87 Difference]: Start difference. First operand 266 states and 752 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) [2020-11-11 23:53:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:15,125 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-11 23:53:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:15,127 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 [2020-11-11 23:53:15,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:15,129 INFO L225 Difference]: With dead ends: 290 [2020-11-11 23:53:15,129 INFO L226 Difference]: Without dead ends: 242 [2020-11-11 23:53:15,130 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-11 23:53:15,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-11 23:53:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.780082987551867) internal successors, (670), 241 states have internal predecessors, (670), 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) [2020-11-11 23:53:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-11 23:53:15,144 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-11 23:53:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:15,144 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-11 23:53:15,145 INFO L482 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) [2020-11-11 23:53:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-11 23:53:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:53:15,146 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:15,147 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:15,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:53:15,147 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:15,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1615070613, now seen corresponding path program 1 times [2020-11-11 23:53:15,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:15,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524896242] [2020-11-11 23:53:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:15,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524896242] [2020-11-11 23:53:15,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:15,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:53:15,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432421312] [2020-11-11 23:53:15,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:53:15,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:15,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:53:15,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:53:15,214 INFO L87 Difference]: Start difference. First operand 242 states and 670 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) [2020-11-11 23:53:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:15,254 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-11-11 23:53:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:15,255 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 [2020-11-11 23:53:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:15,257 INFO L225 Difference]: With dead ends: 260 [2020-11-11 23:53:15,258 INFO L226 Difference]: Without dead ends: 224 [2020-11-11 23:53:15,258 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:15,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-11 23:53:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-11-11 23:53:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.7354260089686098) internal successors, (610), 223 states have internal predecessors, (610), 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) [2020-11-11 23:53:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-11-11 23:53:15,268 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-11-11 23:53:15,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:15,268 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-11-11 23:53:15,268 INFO L482 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) [2020-11-11 23:53:15,268 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-11-11 23:53:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:53:15,270 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:15,270 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:15,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:53:15,271 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:15,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1472189025, now seen corresponding path program 1 times [2020-11-11 23:53:15,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:15,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176627274] [2020-11-11 23:53:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:15,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176627274] [2020-11-11 23:53:15,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:15,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:53:15,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126236508] [2020-11-11 23:53:15,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:15,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:15,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:15,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:15,339 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2020-11-11 23:53:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:15,476 INFO L93 Difference]: Finished difference Result 332 states and 880 transitions. [2020-11-11 23:53:15,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 23:53:15,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 [2020-11-11 23:53:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:15,478 INFO L225 Difference]: With dead ends: 332 [2020-11-11 23:53:15,479 INFO L226 Difference]: Without dead ends: 206 [2020-11-11 23:53:15,479 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-11 23:53:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-11 23:53:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-11-11 23:53:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.6439024390243904) internal successors, (542), 205 states have internal predecessors, (542), 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) [2020-11-11 23:53:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 542 transitions. [2020-11-11 23:53:15,487 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 542 transitions. Word has length 12 [2020-11-11 23:53:15,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:15,488 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 542 transitions. [2020-11-11 23:53:15,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2020-11-11 23:53:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 542 transitions. [2020-11-11 23:53:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:53:15,512 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:15,513 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:15,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:53:15,513 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:15,514 INFO L82 PathProgramCache]: Analyzing trace with hash 524818693, now seen corresponding path program 1 times [2020-11-11 23:53:15,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:15,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660829668] [2020-11-11 23:53:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:15,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660829668] [2020-11-11 23:53:15,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:15,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:53:15,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483239643] [2020-11-11 23:53:15,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:15,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:15,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:15,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:15,621 INFO L87 Difference]: Start difference. First operand 206 states and 542 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:15,710 INFO L93 Difference]: Finished difference Result 260 states and 671 transitions. [2020-11-11 23:53:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:53:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:53:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:15,712 INFO L225 Difference]: With dead ends: 260 [2020-11-11 23:53:15,713 INFO L226 Difference]: Without dead ends: 116 [2020-11-11 23:53:15,713 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-11 23:53:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-11 23:53:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-11 23:53:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.4) internal successors, (276), 115 states have internal predecessors, (276), 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) [2020-11-11 23:53:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 276 transitions. [2020-11-11 23:53:15,718 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 276 transitions. Word has length 13 [2020-11-11 23:53:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:15,719 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 276 transitions. [2020-11-11 23:53:15,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 276 transitions. [2020-11-11 23:53:15,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:53:15,720 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:15,720 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:15,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:53:15,720 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:15,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2065671095, now seen corresponding path program 1 times [2020-11-11 23:53:15,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:15,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026585063] [2020-11-11 23:53:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:15,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026585063] [2020-11-11 23:53:15,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:15,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:53:15,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404144054] [2020-11-11 23:53:15,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:53:15,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:15,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:53:15,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:53:15,806 INFO L87 Difference]: Start difference. First operand 116 states and 276 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:15,855 INFO L93 Difference]: Finished difference Result 137 states and 299 transitions. [2020-11-11 23:53:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:15,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-11 23:53:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:15,857 INFO L225 Difference]: With dead ends: 137 [2020-11-11 23:53:15,857 INFO L226 Difference]: Without dead ends: 97 [2020-11-11 23:53:15,858 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-11 23:53:15,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-11 23:53:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 2.15625) internal successors, (207), 96 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) [2020-11-11 23:53:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 207 transitions. [2020-11-11 23:53:15,862 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 207 transitions. Word has length 14 [2020-11-11 23:53:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:15,863 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 207 transitions. [2020-11-11 23:53:15,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 207 transitions. [2020-11-11 23:53:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:53:15,864 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:15,864 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:15,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:53:15,864 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:15,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:15,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1543325536, now seen corresponding path program 1 times [2020-11-11 23:53:15,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:15,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933070220] [2020-11-11 23:53:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:15,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933070220] [2020-11-11 23:53:15,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:15,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:53:15,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530084207] [2020-11-11 23:53:15,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:15,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:15,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:15,950 INFO L87 Difference]: Start difference. First operand 97 states and 207 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:16,016 INFO L93 Difference]: Finished difference Result 95 states and 184 transitions. [2020-11-11 23:53:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:53:16,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2020-11-11 23:53:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:16,018 INFO L225 Difference]: With dead ends: 95 [2020-11-11 23:53:16,018 INFO L226 Difference]: Without dead ends: 70 [2020-11-11 23:53:16,019 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:53:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-11 23:53:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-11 23:53:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.855072463768116) internal successors, (128), 69 states have internal predecessors, (128), 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) [2020-11-11 23:53:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2020-11-11 23:53:16,022 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 15 [2020-11-11 23:53:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:16,022 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2020-11-11 23:53:16,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2020-11-11 23:53:16,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-11 23:53:16,023 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:16,023 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:16,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:53:16,024 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:16,024 INFO L82 PathProgramCache]: Analyzing trace with hash -598174437, now seen corresponding path program 1 times [2020-11-11 23:53:16,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:16,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793210587] [2020-11-11 23:53:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:16,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793210587] [2020-11-11 23:53:16,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:16,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-11 23:53:16,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280785622] [2020-11-11 23:53:16,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:53:16,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:16,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:53:16,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:53:16,117 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2020-11-11 23:53:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:16,204 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-11-11 23:53:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:53:16,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2020-11-11 23:53:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:16,206 INFO L225 Difference]: With dead ends: 63 [2020-11-11 23:53:16,206 INFO L226 Difference]: Without dead ends: 55 [2020-11-11 23:53:16,206 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:53:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-11 23:53:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-11 23:53:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 54 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) [2020-11-11 23:53:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-11-11 23:53:16,209 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 16 [2020-11-11 23:53:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:16,209 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-11-11 23:53:16,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2020-11-11 23:53:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-11-11 23:53:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-11 23:53:16,210 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:16,210 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:16,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:53:16,210 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:16,211 INFO L82 PathProgramCache]: Analyzing trace with hash 630901748, now seen corresponding path program 1 times [2020-11-11 23:53:16,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:16,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822855688] [2020-11-11 23:53:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:16,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822855688] [2020-11-11 23:53:16,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:16,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:53:16,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248774566] [2020-11-11 23:53:16,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:16,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:16,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:16,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:16,278 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:16,339 INFO L93 Difference]: Finished difference Result 69 states and 120 transitions. [2020-11-11 23:53:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:16,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2020-11-11 23:53:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:16,341 INFO L225 Difference]: With dead ends: 69 [2020-11-11 23:53:16,341 INFO L226 Difference]: Without dead ends: 31 [2020-11-11 23:53:16,341 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:53:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-11 23:53:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-11 23:53:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 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) [2020-11-11 23:53:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-11-11 23:53:16,343 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-11-11 23:53:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:16,344 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-11-11 23:53:16,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-11-11 23:53:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-11 23:53:16,344 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:53:16,345 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:53:16,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 23:53:16,345 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:53:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:53:16,345 INFO L82 PathProgramCache]: Analyzing trace with hash 664387820, now seen corresponding path program 2 times [2020-11-11 23:53:16,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:53:16,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330438698] [2020-11-11 23:53:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:53:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:53:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:53:16,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330438698] [2020-11-11 23:53:16,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:53:16,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:53:16,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973790017] [2020-11-11 23:53:16,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:53:16,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:53:16,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:53:16,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:53:16,412 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:16,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:53:16,453 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-11-11 23:53:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:53:16,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2020-11-11 23:53:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:53:16,453 INFO L225 Difference]: With dead ends: 30 [2020-11-11 23:53:16,454 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:53:16,454 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:53:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:53:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:53:16,455 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) [2020-11-11 23:53:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:53:16,455 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-11 23:53:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:53:16,455 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:53:16,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:53:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:53:16,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:53:16,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-11 23:53:16,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:53:16 BasicIcfg [2020-11-11 23:53:16,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:53:16,462 INFO L168 Benchmark]: Toolchain (without parser) took 10331.54 ms. Allocated memory was 302.0 MB in the beginning and 369.1 MB in the end (delta: 67.1 MB). Free memory was 276.3 MB in the beginning and 253.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 92.0 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:16,462 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:53:16,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.75 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 277.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:16,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.59 ms. Allocated memory is still 302.0 MB. Free memory was 277.6 MB in the beginning and 275.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:53:16,465 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 273.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:16,465 INFO L168 Benchmark]: RCFGBuilder took 608.62 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 250.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:16,466 INFO L168 Benchmark]: TraceAbstraction took 8837.13 ms. Allocated memory was 302.0 MB in the beginning and 369.1 MB in the end (delta: 67.1 MB). Free memory was 249.3 MB in the beginning and 253.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.0 GB. [2020-11-11 23:53:16,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 796.75 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 277.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.59 ms. Allocated memory is still 302.0 MB. Free memory was 277.6 MB in the beginning and 275.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 273.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 608.62 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 250.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8837.13 ms. Allocated memory was 302.0 MB in the beginning and 369.1 MB in the end (delta: 67.1 MB). Free memory was 249.3 MB in the beginning and 253.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 995 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.5s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2870 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 243 SDtfs, 229 SDslu, 389 SDs, 0 SdLazy, 166 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 5427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...