/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-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:15:16,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:15:16,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:15:16,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:15:16,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:15:16,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:15:16,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:15:16,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:15:16,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:15:16,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:15:16,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:15:16,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:15:16,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:15:16,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:15:16,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:15:16,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:15:16,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:15:16,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:15:16,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:15:16,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:15:16,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:15:16,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:15:16,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:15:16,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:15:16,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:15:16,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:15:16,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:15:16,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:15:16,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:15:16,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:15:16,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:15:16,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:15:16,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:15:16,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:15:16,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:15:16,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:15:16,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf [2020-11-12 12:15:16,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:15:16,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:15:16,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:15:16,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:15:16,430 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:15:16,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:15:16,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:15:16,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:15:16,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:15:16,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:15:16,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:15:16,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:15:16,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:15:16,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:15:16,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:15:16,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:15:16,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:15:16,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:15:16,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:15:16,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:15:16,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:15:16,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:15:16,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:15:16,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:15:16,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:15:16,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:15:16,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:15:16,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:15:16,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:15:16,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:15:16,438 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:15:16,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:15:16,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:15:16,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:15:16,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:15:16,914 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:15:16,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-11-12 12:15:16,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d83d02f0/21c7e0e135a648ce95b870bb329e92d8/FLAGecda00a83 [2020-11-12 12:15:17,791 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:15:17,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-11-12 12:15:17,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d83d02f0/21c7e0e135a648ce95b870bb329e92d8/FLAGecda00a83 [2020-11-12 12:15:18,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d83d02f0/21c7e0e135a648ce95b870bb329e92d8 [2020-11-12 12:15:18,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:15:18,083 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:15:18,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:15:18,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:15:18,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:15:18,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad72201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18, skipping insertion in model container [2020-11-12 12:15:18,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:15:18,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:15:18,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:15:18,579 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:15:18,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:15:18,748 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:15:18,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18 WrapperNode [2020-11-12 12:15:18,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:15:18,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:15:18,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:15:18,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:15:18,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:15:18,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:15:18,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:15:18,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:15:18,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (1/1) ... [2020-11-12 12:15:18,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:15:18,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:15:18,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:15:18,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:15:18,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (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 [2020-11-12 12:15:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:15:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:15:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:15:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:15:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:15:18,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:15:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:15:18,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:15:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:15:18,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:15:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:15:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:15:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:15:18,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:15:18,944 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:15:19,312 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:15:19,313 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:15:19,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:19 BoogieIcfgContainer [2020-11-12 12:15:19,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:15:19,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:15:19,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:15:19,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:15:19,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:15:18" (1/3) ... [2020-11-12 12:15:19,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283ed8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:19, skipping insertion in model container [2020-11-12 12:15:19,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:18" (2/3) ... [2020-11-12 12:15:19,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283ed8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:19, skipping insertion in model container [2020-11-12 12:15:19,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:19" (3/3) ... [2020-11-12 12:15:19,324 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-11-12 12:15:19,341 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:15:19,342 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:15:19,345 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:15:19,346 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:15:19,412 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,421 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,424 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,427 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,428 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,428 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,428 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,428 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,429 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,429 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,429 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,439 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,440 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,440 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,443 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,443 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,443 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:15:19,446 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:15:19,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:15:19,491 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:15:19,491 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:15:19,492 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:15:19,492 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:15:19,492 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:15:19,492 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:15:19,492 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:15:19,492 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:15:19,506 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:15:20,376 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-11-12 12:15:21,477 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 1096ms [2020-11-12 12:15:21,515 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-11-12 12:15:21,663 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34422 states, 31301 states have (on average 1.2171815596945785) internal successors, (38099), 34421 states have internal predecessors, (38099), 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) [2020-11-12 12:15:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand has 34422 states, 31301 states have (on average 1.2171815596945785) internal successors, (38099), 34421 states have internal predecessors, (38099), 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) [2020-11-12 12:15:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 12:15:21,854 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:21,855 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:21,856 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash -578983952, now seen corresponding path program 1 times [2020-11-12 12:15:21,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:21,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340822952] [2020-11-12 12:15:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:22,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340822952] [2020-11-12 12:15:22,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:22,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:15:22,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951151707] [2020-11-12 12:15:22,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:15:22,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:22,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:15:22,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:15:22,400 INFO L87 Difference]: Start difference. First operand has 34422 states, 31301 states have (on average 1.2171815596945785) internal successors, (38099), 34421 states have internal predecessors, (38099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2020-11-12 12:15:22,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:22,710 INFO L93 Difference]: Finished difference Result 14682 states and 17468 transitions. [2020-11-12 12:15:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:15:22,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2020-11-12 12:15:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:22,764 INFO L225 Difference]: With dead ends: 14682 [2020-11-12 12:15:22,764 INFO L226 Difference]: Without dead ends: 4655 [2020-11-12 12:15:22,766 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:15:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4655 states. [2020-11-12 12:15:22,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4655 to 4655. [2020-11-12 12:15:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4655 states, 4410 states have (on average 1.3936507936507936) internal successors, (6146), 4654 states have internal predecessors, (6146), 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) [2020-11-12 12:15:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4655 states to 4655 states and 6146 transitions. [2020-11-12 12:15:23,028 INFO L78 Accepts]: Start accepts. Automaton has 4655 states and 6146 transitions. Word has length 41 [2020-11-12 12:15:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:23,029 INFO L481 AbstractCegarLoop]: Abstraction has 4655 states and 6146 transitions. [2020-11-12 12:15:23,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2020-11-12 12:15:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4655 states and 6146 transitions. [2020-11-12 12:15:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 12:15:23,043 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:23,044 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:23,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:15:23,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:23,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1767731663, now seen corresponding path program 1 times [2020-11-12 12:15:23,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:23,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624198756] [2020-11-12 12:15:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:23,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624198756] [2020-11-12 12:15:23,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:23,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:15:23,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477885658] [2020-11-12 12:15:23,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:15:23,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:23,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:15:23,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:15:23,312 INFO L87 Difference]: Start difference. First operand 4655 states and 6146 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2020-11-12 12:15:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:23,475 INFO L93 Difference]: Finished difference Result 5605 states and 7385 transitions. [2020-11-12 12:15:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:15:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2020-11-12 12:15:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:23,499 INFO L225 Difference]: With dead ends: 5605 [2020-11-12 12:15:23,500 INFO L226 Difference]: Without dead ends: 4136 [2020-11-12 12:15:23,501 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:15:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2020-11-12 12:15:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 4136. [2020-11-12 12:15:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 3921 states have (on average 1.393011986738077) internal successors, (5462), 4135 states have internal predecessors, (5462), 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) [2020-11-12 12:15:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 5462 transitions. [2020-11-12 12:15:23,671 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 5462 transitions. Word has length 43 [2020-11-12 12:15:23,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:23,672 INFO L481 AbstractCegarLoop]: Abstraction has 4136 states and 5462 transitions. [2020-11-12 12:15:23,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2020-11-12 12:15:23,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 5462 transitions. [2020-11-12 12:15:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-12 12:15:23,682 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:23,682 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:23,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:15:23,682 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1771656880, now seen corresponding path program 1 times [2020-11-12 12:15:23,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:23,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354209427] [2020-11-12 12:15:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:23,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354209427] [2020-11-12 12:15:23,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:23,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:15:23,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207225161] [2020-11-12 12:15:23,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:15:23,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:23,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:15:23,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:15:23,897 INFO L87 Difference]: Start difference. First operand 4136 states and 5462 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2020-11-12 12:15:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:24,028 INFO L93 Difference]: Finished difference Result 4506 states and 5660 transitions. [2020-11-12 12:15:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:15:24,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) Word has length 45 [2020-11-12 12:15:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:24,044 INFO L225 Difference]: With dead ends: 4506 [2020-11-12 12:15:24,044 INFO L226 Difference]: Without dead ends: 3314 [2020-11-12 12:15:24,045 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:15:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2020-11-12 12:15:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3314. [2020-11-12 12:15:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3142 states have (on average 1.32017823042648) internal successors, (4148), 3313 states have internal predecessors, (4148), 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) [2020-11-12 12:15:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 4148 transitions. [2020-11-12 12:15:24,161 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 4148 transitions. Word has length 45 [2020-11-12 12:15:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:24,161 INFO L481 AbstractCegarLoop]: Abstraction has 3314 states and 4148 transitions. [2020-11-12 12:15:24,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2020-11-12 12:15:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 4148 transitions. [2020-11-12 12:15:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:15:24,167 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:24,167 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:24,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:15:24,168 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:24,168 INFO L82 PathProgramCache]: Analyzing trace with hash -355993648, now seen corresponding path program 1 times [2020-11-12 12:15:24,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:24,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151922254] [2020-11-12 12:15:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:24,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151922254] [2020-11-12 12:15:24,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:24,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:15:24,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276122145] [2020-11-12 12:15:24,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:15:24,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:24,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:15:24,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:15:24,284 INFO L87 Difference]: Start difference. First operand 3314 states and 4148 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:15:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:24,464 INFO L93 Difference]: Finished difference Result 5241 states and 6570 transitions. [2020-11-12 12:15:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:15:24,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-11-12 12:15:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:24,479 INFO L225 Difference]: With dead ends: 5241 [2020-11-12 12:15:24,479 INFO L226 Difference]: Without dead ends: 3128 [2020-11-12 12:15:24,480 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:15:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-11-12 12:15:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3128. [2020-11-12 12:15:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 2964 states have (on average 1.2901484480431848) internal successors, (3824), 3127 states have internal predecessors, (3824), 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) [2020-11-12 12:15:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 3824 transitions. [2020-11-12 12:15:24,559 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 3824 transitions. Word has length 46 [2020-11-12 12:15:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:24,559 INFO L481 AbstractCegarLoop]: Abstraction has 3128 states and 3824 transitions. [2020-11-12 12:15:24,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:15:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 3824 transitions. [2020-11-12 12:15:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:15:24,566 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:24,566 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:24,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:15:24,566 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash 124517322, now seen corresponding path program 1 times [2020-11-12 12:15:24,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:24,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603358002] [2020-11-12 12:15:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:24,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603358002] [2020-11-12 12:15:24,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:24,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:15:24,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376169778] [2020-11-12 12:15:24,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:15:24,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:24,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:15:24,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:15:24,681 INFO L87 Difference]: Start difference. First operand 3128 states and 3824 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2020-11-12 12:15:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:24,856 INFO L93 Difference]: Finished difference Result 5159 states and 6436 transitions. [2020-11-12 12:15:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:15:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 47 [2020-11-12 12:15:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:24,871 INFO L225 Difference]: With dead ends: 5159 [2020-11-12 12:15:24,872 INFO L226 Difference]: Without dead ends: 3076 [2020-11-12 12:15:24,872 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:15:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-11-12 12:15:24,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3076. [2020-11-12 12:15:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 2912 states have (on average 1.2822802197802199) internal successors, (3734), 3075 states have internal predecessors, (3734), 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) [2020-11-12 12:15:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3734 transitions. [2020-11-12 12:15:24,972 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3734 transitions. Word has length 47 [2020-11-12 12:15:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:24,972 INFO L481 AbstractCegarLoop]: Abstraction has 3076 states and 3734 transitions. [2020-11-12 12:15:24,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2020-11-12 12:15:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3734 transitions. [2020-11-12 12:15:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:15:24,982 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:24,982 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:24,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:15:24,983 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -893661280, now seen corresponding path program 2 times [2020-11-12 12:15:24,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:24,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020917440] [2020-11-12 12:15:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:25,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020917440] [2020-11-12 12:15:25,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:25,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:15:25,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989230930] [2020-11-12 12:15:25,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:15:25,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:25,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:15:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:15:25,116 INFO L87 Difference]: Start difference. First operand 3076 states and 3734 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2020-11-12 12:15:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:25,271 INFO L93 Difference]: Finished difference Result 4971 states and 5783 transitions. [2020-11-12 12:15:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:15:25,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 47 [2020-11-12 12:15:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:25,286 INFO L225 Difference]: With dead ends: 4971 [2020-11-12 12:15:25,286 INFO L226 Difference]: Without dead ends: 3103 [2020-11-12 12:15:25,287 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:15:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2020-11-12 12:15:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 2527. [2020-11-12 12:15:25,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2395 states have (on average 1.2734864300626305) internal successors, (3050), 2526 states have internal predecessors, (3050), 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) [2020-11-12 12:15:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3050 transitions. [2020-11-12 12:15:25,373 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3050 transitions. Word has length 47 [2020-11-12 12:15:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:25,373 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 3050 transitions. [2020-11-12 12:15:25,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2020-11-12 12:15:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3050 transitions. [2020-11-12 12:15:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:15:25,379 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:25,379 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:25,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:15:25,380 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:25,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:25,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1324859930, now seen corresponding path program 1 times [2020-11-12 12:15:25,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:25,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161228003] [2020-11-12 12:15:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:25,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161228003] [2020-11-12 12:15:25,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:25,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:15:25,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952048203] [2020-11-12 12:15:25,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:15:25,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:25,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:15:25,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:15:25,519 INFO L87 Difference]: Start difference. First operand 2527 states and 3050 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2020-11-12 12:15:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:25,715 INFO L93 Difference]: Finished difference Result 3530 states and 4196 transitions. [2020-11-12 12:15:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:15:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 47 [2020-11-12 12:15:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:25,722 INFO L225 Difference]: With dead ends: 3530 [2020-11-12 12:15:25,723 INFO L226 Difference]: Without dead ends: 1354 [2020-11-12 12:15:25,724 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:15:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-11-12 12:15:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1354. [2020-11-12 12:15:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1274 states have (on average 1.2653061224489797) internal successors, (1612), 1353 states have internal predecessors, (1612), 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) [2020-11-12 12:15:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1612 transitions. [2020-11-12 12:15:25,764 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1612 transitions. Word has length 47 [2020-11-12 12:15:25,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:25,765 INFO L481 AbstractCegarLoop]: Abstraction has 1354 states and 1612 transitions. [2020-11-12 12:15:25,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2020-11-12 12:15:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1612 transitions. [2020-11-12 12:15:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:15:25,768 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:25,768 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:25,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:15:25,769 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:25,769 INFO L82 PathProgramCache]: Analyzing trace with hash -322406271, now seen corresponding path program 1 times [2020-11-12 12:15:25,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:25,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027383688] [2020-11-12 12:15:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:25,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027383688] [2020-11-12 12:15:25,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:25,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:15:25,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131061426] [2020-11-12 12:15:25,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:15:25,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:25,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:15:25,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:15:25,945 INFO L87 Difference]: Start difference. First operand 1354 states and 1612 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2020-11-12 12:15:26,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:26,047 INFO L93 Difference]: Finished difference Result 1398 states and 1628 transitions. [2020-11-12 12:15:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:15:26,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2020-11-12 12:15:26,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:26,054 INFO L225 Difference]: With dead ends: 1398 [2020-11-12 12:15:26,054 INFO L226 Difference]: Without dead ends: 1312 [2020-11-12 12:15:26,055 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-12 12:15:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-11-12 12:15:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2020-11-12 12:15:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1234 states have (on average 1.2495948136142625) internal successors, (1542), 1311 states have internal predecessors, (1542), 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) [2020-11-12 12:15:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1542 transitions. [2020-11-12 12:15:26,085 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1542 transitions. Word has length 49 [2020-11-12 12:15:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:26,085 INFO L481 AbstractCegarLoop]: Abstraction has 1312 states and 1542 transitions. [2020-11-12 12:15:26,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2020-11-12 12:15:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1542 transitions. [2020-11-12 12:15:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:15:26,088 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:26,088 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:26,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 12:15:26,088 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:26,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1115543646, now seen corresponding path program 1 times [2020-11-12 12:15:26,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:26,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880690218] [2020-11-12 12:15:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:26,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880690218] [2020-11-12 12:15:26,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:26,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:15:26,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538409668] [2020-11-12 12:15:26,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:15:26,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:26,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:15:26,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:15:26,238 INFO L87 Difference]: Start difference. First operand 1312 states and 1542 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:15:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:26,385 INFO L93 Difference]: Finished difference Result 1223 states and 1353 transitions. [2020-11-12 12:15:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:15:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-12 12:15:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:26,390 INFO L225 Difference]: With dead ends: 1223 [2020-11-12 12:15:26,390 INFO L226 Difference]: Without dead ends: 1037 [2020-11-12 12:15:26,391 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-12 12:15:26,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-11-12 12:15:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1037. [2020-11-12 12:15:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 974 states have (on average 1.1837782340862424) internal successors, (1153), 1036 states have internal predecessors, (1153), 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) [2020-11-12 12:15:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1153 transitions. [2020-11-12 12:15:26,414 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1153 transitions. Word has length 50 [2020-11-12 12:15:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:26,416 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1153 transitions. [2020-11-12 12:15:26,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:15:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1153 transitions. [2020-11-12 12:15:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:15:26,419 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:26,419 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:26,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 12:15:26,419 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:26,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1955428885, now seen corresponding path program 1 times [2020-11-12 12:15:26,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:26,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236139932] [2020-11-12 12:15:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:26,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236139932] [2020-11-12 12:15:26,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:26,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:15:26,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618750236] [2020-11-12 12:15:26,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:15:26,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:26,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:15:26,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:15:26,590 INFO L87 Difference]: Start difference. First operand 1037 states and 1153 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:15:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:26,743 INFO L93 Difference]: Finished difference Result 705 states and 712 transitions. [2020-11-12 12:15:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:15:26,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 12:15:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:26,746 INFO L225 Difference]: With dead ends: 705 [2020-11-12 12:15:26,746 INFO L226 Difference]: Without dead ends: 448 [2020-11-12 12:15:26,747 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:15:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-11-12 12:15:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2020-11-12 12:15:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 421 states have (on average 1.0617577197149644) internal successors, (447), 447 states have internal predecessors, (447), 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) [2020-11-12 12:15:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 447 transitions. [2020-11-12 12:15:26,757 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 447 transitions. Word has length 51 [2020-11-12 12:15:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:26,757 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 447 transitions. [2020-11-12 12:15:26,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:15:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 447 transitions. [2020-11-12 12:15:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:15:26,758 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:15:26,759 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:15:26,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 12:15:26,759 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:15:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:15:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1555160746, now seen corresponding path program 1 times [2020-11-12 12:15:26,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:15:26,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666658456] [2020-11-12 12:15:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:15:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:15:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:15:26,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666658456] [2020-11-12 12:15:26,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:15:26,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:15:26,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427514033] [2020-11-12 12:15:26,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:15:26,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:15:26,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:15:26,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:15:26,845 INFO L87 Difference]: Start difference. First operand 448 states and 447 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2020-11-12 12:15:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:15:26,909 INFO L93 Difference]: Finished difference Result 340 states and 339 transitions. [2020-11-12 12:15:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 12:15:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2020-11-12 12:15:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:15:26,910 INFO L225 Difference]: With dead ends: 340 [2020-11-12 12:15:26,910 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:15:26,910 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-12 12:15:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:15:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:15:26,911 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) [2020-11-12 12:15:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:15:26,911 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:15:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:15:26,911 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:15:26,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2020-11-12 12:15:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:15:26,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:15:26,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 12:15:26,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:15:26 BasicIcfg [2020-11-12 12:15:26,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:15:26,920 INFO L168 Benchmark]: Toolchain (without parser) took 8840.33 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 788.5 MB). Free memory was 277.2 MB in the beginning and 836.1 MB in the end (delta: -558.9 MB). Peak memory consumption was 231.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:15:26,921 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:15:26,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.77 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:15:26,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:15:26,923 INFO L168 Benchmark]: Boogie Preprocessor took 31.02 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 242.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:15:26,923 INFO L168 Benchmark]: RCFGBuilder took 482.47 ms. Allocated memory is still 302.0 MB. Free memory was 242.4 MB in the beginning and 264.5 MB in the end (delta: -22.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2020-11-12 12:15:26,924 INFO L168 Benchmark]: TraceAbstraction took 7600.26 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 788.5 MB). Free memory was 264.5 MB in the beginning and 836.1 MB in the end (delta: -571.6 MB). Peak memory consumption was 215.9 MB. Max. memory is 16.0 GB. [2020-11-12 12:15:26,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 663.77 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.65 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.02 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 242.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 482.47 ms. Allocated memory is still 302.0 MB. Free memory was 242.4 MB in the beginning and 264.5 MB in the end (delta: -22.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7600.26 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 788.5 MB). Free memory was 264.5 MB in the beginning and 836.1 MB in the end (delta: -571.6 MB). Peak memory consumption was 215.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 727 SDtfs, 823 SDslu, 2650 SDs, 0 SdLazy, 316 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34422occurred 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: 0.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 576 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 519 NumberOfCodeBlocks, 519 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 62888 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...