/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:06:32,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:06:32,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:06:32,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:06:32,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:06:32,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:06:32,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:06:32,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:06:32,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:06:32,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:06:32,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:06:32,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:06:32,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:06:32,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:06:32,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:06:32,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:06:32,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:06:32,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:06:32,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:06:32,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:06:32,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:06:32,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:06:32,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:06:32,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:06:32,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 00:06:32,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 00:06:32,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 00:06:32,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 00:06:32,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 00:06:32,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 00:06:32,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:06:32,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:06:32,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:06:32,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:06:32,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:06:32,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:06:32,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:06:32,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:06:32,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:06:32,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:06:32,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:06:32,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-12 00:06:32,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:06:32,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:06:32,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:06:32,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:06:32,468 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:06:32,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:06:32,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:06:32,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:06:32,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:06:32,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:06:32,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:06:32,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:06:32,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:06:32,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:06:32,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:06:32,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:06:32,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:06:32,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:06:32,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:06:32,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:06:32,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:06:32,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:06:32,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:06:32,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:06:32,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:06:32,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:06:32,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:06:32,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:06:32,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:06:32,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:06:32,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:06:32,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:06:32,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:06:32,871 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:06:32,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-11-12 00:06:32,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe74821c/7df616871c9e43c19b57871a00dc87e0/FLAGdb9d1194d [2020-11-12 00:06:33,688 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:06:33,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-11-12 00:06:33,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe74821c/7df616871c9e43c19b57871a00dc87e0/FLAGdb9d1194d [2020-11-12 00:06:33,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe74821c/7df616871c9e43c19b57871a00dc87e0 [2020-11-12 00:06:33,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:06:33,924 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:06:33,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:06:33,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:06:33,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:06:33,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:06:33" (1/1) ... [2020-11-12 00:06:33,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e82018a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:33, skipping insertion in model container [2020-11-12 00:06:33,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:06:33" (1/1) ... [2020-11-12 00:06:33,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:06:34,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:06:34,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:06:34,448 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:06:34,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:06:34,609 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:06:34,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34 WrapperNode [2020-11-12 00:06:34,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:06:34,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:06:34,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:06:34,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:06:34,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:06:34,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:06:34,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:06:34,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:06:34,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (1/1) ... [2020-11-12 00:06:34,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:06:34,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:06:34,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:06:34,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:06:34,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (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 00:06:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:06:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:06:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:06:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:06:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:06:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:06:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:06:34,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:06:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:06:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:06:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:06:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:06:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:06:34,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:06:34,832 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 00:06:35,338 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:06:35,339 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:06:35,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:06:35 BoogieIcfgContainer [2020-11-12 00:06:35,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:06:35,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:06:35,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:06:35,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:06:35,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:06:33" (1/3) ... [2020-11-12 00:06:35,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a2779b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:06:35, skipping insertion in model container [2020-11-12 00:06:35,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:06:34" (2/3) ... [2020-11-12 00:06:35,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a2779b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:06:35, skipping insertion in model container [2020-11-12 00:06:35,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:06:35" (3/3) ... [2020-11-12 00:06:35,354 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2020-11-12 00:06:35,369 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:06:35,370 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:06:35,374 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:06:35,375 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:06:35,424 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,424 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,424 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,424 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,427 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,427 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,428 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,428 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,428 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,428 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,428 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,429 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,431 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,435 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,435 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,435 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,443 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:06:35,461 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:06:35,474 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 00:06:35,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:06:35,513 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:06:35,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:06:35,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:06:35,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:06:35,513 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:06:35,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:06:35,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:06:35,530 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:06:35,532 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-12 00:06:35,535 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-12 00:06:35,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-12 00:06:35,608 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-12 00:06:35,608 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:06:35,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-12 00:06:35,618 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-12 00:06:38,711 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-12 00:06:39,549 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-11-12 00:06:39,701 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-12 00:06:39,986 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-12 00:06:40,308 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-12 00:06:40,498 INFO L131 LiptonReduction]: Checked pairs total: 2591 [2020-11-12 00:06:40,498 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-12 00:06:40,504 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-11-12 00:06:40,529 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 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 00:06:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 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 00:06:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 00:06:40,539 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:40,540 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:40,540 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:40,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:40,546 INFO L82 PathProgramCache]: Analyzing trace with hash 87451369, now seen corresponding path program 1 times [2020-11-12 00:06:40,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:40,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852662164] [2020-11-12 00:06:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:40,797 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 00:06:40,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852662164] [2020-11-12 00:06:40,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:40,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:06:40,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964170210] [2020-11-12 00:06:40,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:06:40,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:40,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:06:40,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:06:40,828 INFO L87 Difference]: Start difference. First operand has 226 states, 224 states have (on average 3.044642857142857) internal successors, (682), 225 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:40,890 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-11-12 00:06:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:06:40,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2020-11-12 00:06:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:40,916 INFO L225 Difference]: With dead ends: 214 [2020-11-12 00:06:40,918 INFO L226 Difference]: Without dead ends: 166 [2020-11-12 00:06:40,921 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:06:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-12 00:06:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-11-12 00:06:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.672727272727273) internal successors, (441), 165 states have internal predecessors, (441), 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 00:06:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-11-12 00:06:40,996 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-11-12 00:06:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:40,997 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-11-12 00:06:40,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-11-12 00:06:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-12 00:06:40,998 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:40,999 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:40,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:06:40,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:41,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1583999068, now seen corresponding path program 1 times [2020-11-12 00:06:41,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:41,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334205857] [2020-11-12 00:06:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:41,086 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 00:06:41,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334205857] [2020-11-12 00:06:41,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:41,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:06:41,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623779152] [2020-11-12 00:06:41,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:06:41,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:41,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:06:41,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:06:41,090 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:41,116 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-11-12 00:06:41,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:06:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2020-11-12 00:06:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:41,119 INFO L225 Difference]: With dead ends: 220 [2020-11-12 00:06:41,119 INFO L226 Difference]: Without dead ends: 148 [2020-11-12 00:06:41,120 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:06:41,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-12 00:06:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-11-12 00:06:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.564625850340136) internal successors, (377), 147 states have internal predecessors, (377), 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 00:06:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-11-12 00:06:41,135 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 9 [2020-11-12 00:06:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:41,135 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-11-12 00:06:41,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-11-12 00:06:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-12 00:06:41,137 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:41,137 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:41,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:06:41,138 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1907596549, now seen corresponding path program 1 times [2020-11-12 00:06:41,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:41,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556668706] [2020-11-12 00:06:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:41,252 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 00:06:41,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556668706] [2020-11-12 00:06:41,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:41,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:06:41,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326480433] [2020-11-12 00:06:41,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:06:41,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:41,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:06:41,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:06:41,254 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:41,295 INFO L93 Difference]: Finished difference Result 168 states and 391 transitions. [2020-11-12 00:06:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:06:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2020-11-12 00:06:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:41,298 INFO L225 Difference]: With dead ends: 168 [2020-11-12 00:06:41,298 INFO L226 Difference]: Without dead ends: 126 [2020-11-12 00:06:41,299 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:06:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-12 00:06:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-11-12 00:06:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.328) internal successors, (291), 125 states have internal predecessors, (291), 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 00:06:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 291 transitions. [2020-11-12 00:06:41,310 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 291 transitions. Word has length 10 [2020-11-12 00:06:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:41,310 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 291 transitions. [2020-11-12 00:06:41,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 291 transitions. [2020-11-12 00:06:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:06:41,311 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:41,312 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:41,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:06:41,312 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:41,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1178539208, now seen corresponding path program 1 times [2020-11-12 00:06:41,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:41,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934743231] [2020-11-12 00:06:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:41,374 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 00:06:41,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934743231] [2020-11-12 00:06:41,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:41,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:06:41,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176095495] [2020-11-12 00:06:41,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:06:41,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:41,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:06:41,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:06:41,377 INFO L87 Difference]: Start difference. First operand 126 states and 291 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:41,424 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-11-12 00:06:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:06:41,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2020-11-12 00:06:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:41,427 INFO L225 Difference]: With dead ends: 121 [2020-11-12 00:06:41,427 INFO L226 Difference]: Without dead ends: 93 [2020-11-12 00:06:41,428 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:06:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-12 00:06:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-12 00:06:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.0869565217391304) internal successors, (192), 92 states have internal predecessors, (192), 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 00:06:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-11-12 00:06:41,445 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-11-12 00:06:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:41,446 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-11-12 00:06:41,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,446 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-11-12 00:06:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:06:41,447 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:41,447 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:41,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:06:41,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:41,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1293473607, now seen corresponding path program 1 times [2020-11-12 00:06:41,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:41,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195897132] [2020-11-12 00:06:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:41,563 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 00:06:41,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195897132] [2020-11-12 00:06:41,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:41,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:06:41,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664413326] [2020-11-12 00:06:41,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:06:41,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:41,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:06:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:06:41,565 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:41,613 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-11-12 00:06:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:06:41,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-12 00:06:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:41,614 INFO L225 Difference]: With dead ends: 87 [2020-11-12 00:06:41,614 INFO L226 Difference]: Without dead ends: 78 [2020-11-12 00:06:41,615 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:06:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-12 00:06:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-12 00:06:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.103896103896104) internal successors, (162), 77 states have internal predecessors, (162), 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 00:06:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-11-12 00:06:41,620 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-11-12 00:06:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:41,620 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-11-12 00:06:41,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,621 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-11-12 00:06:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 00:06:41,622 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:41,622 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:41,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:06:41,622 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:41,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1659884209, now seen corresponding path program 1 times [2020-11-12 00:06:41,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:41,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185051870] [2020-11-12 00:06:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:41,704 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 00:06:41,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185051870] [2020-11-12 00:06:41,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:41,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:06:41,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703227736] [2020-11-12 00:06:41,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:06:41,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:41,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:06:41,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:06:41,708 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:41,725 INFO L93 Difference]: Finished difference Result 91 states and 183 transitions. [2020-11-12 00:06:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:06:41,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2020-11-12 00:06:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:41,727 INFO L225 Difference]: With dead ends: 91 [2020-11-12 00:06:41,727 INFO L226 Difference]: Without dead ends: 33 [2020-11-12 00:06:41,727 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:06:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-12 00:06:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-12 00:06:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.59375) internal successors, (51), 32 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 00:06:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-11-12 00:06:41,736 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-11-12 00:06:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:41,736 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-11-12 00:06:41,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-11-12 00:06:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 00:06:41,737 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:06:41,737 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:06:41,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:06:41,737 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:06:41,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:06:41,739 INFO L82 PathProgramCache]: Analyzing trace with hash -609824271, now seen corresponding path program 2 times [2020-11-12 00:06:41,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:06:41,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35866880] [2020-11-12 00:06:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:06:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:06:41,768 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 00:06:41,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35866880] [2020-11-12 00:06:41,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:06:41,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:06:41,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530204400] [2020-11-12 00:06:41,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:06:41,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:06:41,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:06:41,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:06:41,771 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:06:41,777 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-11-12 00:06:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:06:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2020-11-12 00:06:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:06:41,778 INFO L225 Difference]: With dead ends: 32 [2020-11-12 00:06:41,778 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:06:41,778 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:06:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:06:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:06:41,779 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 00:06:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:06:41,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-12 00:06:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:06:41,780 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:06:41,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:06:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:06:41,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:06:41,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:06:41,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:06:41 BasicIcfg [2020-11-12 00:06:41,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:06:41,786 INFO L168 Benchmark]: Toolchain (without parser) took 7866.88 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 276.3 MB in the beginning and 241.8 MB in the end (delta: 34.5 MB). Peak memory consumption was 95.7 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:41,786 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.2 MB in the end (delta: 78.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:06:41,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.83 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 245.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:41,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.67 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 243.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:41,789 INFO L168 Benchmark]: Boogie Preprocessor took 57.46 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 241.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:41,790 INFO L168 Benchmark]: RCFGBuilder took 602.44 ms. Allocated memory is still 302.0 MB. Free memory was 241.9 MB in the beginning and 263.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:41,791 INFO L168 Benchmark]: TraceAbstraction took 6437.33 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 263.7 MB in the beginning and 241.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 16.0 GB. [2020-11-12 00:06:41,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 272.2 MB in the end (delta: 78.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 683.83 ms. Allocated memory is still 302.0 MB. Free memory was 275.8 MB in the beginning and 245.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 68.67 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 243.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 57.46 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 241.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 602.44 ms. Allocated memory is still 302.0 MB. Free memory was 241.9 MB in the beginning and 263.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6437.33 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 263.7 MB in the beginning and 241.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 961 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 62 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 2591 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 127 SDtfs, 123 SDslu, 172 SDs, 0 SdLazy, 98 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2338 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...