/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/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:13:34,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:13:34,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:13:34,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:13:34,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:13:34,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:13:34,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:13:34,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:13:34,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:13:34,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:13:34,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:13:34,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:13:34,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:13:34,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:13:34,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:13:34,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:13:34,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:13:34,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:13:34,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:13:34,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:13:34,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:13:34,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:13:34,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:13:34,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:13:34,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:13:34,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:13:34,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:13:34,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:13:34,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:13:34,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:13:34,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:13:34,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:13:34,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:13:34,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:13:34,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:13:34,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:13:34,493 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 00:13:34,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:13:34,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:13:34,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:13:34,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:13:34,553 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:13:34,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:13:34,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:13:34,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:13:34,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:13:34,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:13:34,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:13:34,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:13:34,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:13:34,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:13:34,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:13:34,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:13:34,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:13:34,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:13:34,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:13:34,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:13:34,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:13:34,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:13:34,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:13:34,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:13:34,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:13:34,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:13:34,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:13:34,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:13:34,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:13:35,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:13:35,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:13:35,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:13:35,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:13:35,060 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:13:35,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-11-12 00:13:35,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7abea350/98960863d32b4543bec57a693ee3c852/FLAG8d18066e0 [2020-11-12 00:13:35,970 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:13:35,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-11-12 00:13:35,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7abea350/98960863d32b4543bec57a693ee3c852/FLAG8d18066e0 [2020-11-12 00:13:36,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7abea350/98960863d32b4543bec57a693ee3c852 [2020-11-12 00:13:36,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:13:36,197 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:13:36,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:13:36,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:13:36,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:13:36,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:36" (1/1) ... [2020-11-12 00:13:36,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50082dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:36, skipping insertion in model container [2020-11-12 00:13:36,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:36" (1/1) ... [2020-11-12 00:13:36,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:13:36,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:13:36,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:13:36,763 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:13:36,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:13:37,018 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:13:37,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37 WrapperNode [2020-11-12 00:13:37,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:13:37,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:13:37,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:13:37,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:13:37,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:13:37,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:13:37,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:13:37,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:13:37,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (1/1) ... [2020-11-12 00:13:37,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:13:37,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:13:37,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:13:37,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:13:37,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (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 00:13:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:13:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:13:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:13:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:13:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:13:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:13:37,259 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:13:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:13:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:13:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:13:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:13:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:13:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:13:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:13:37,263 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 00:13:37,781 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:13:37,782 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:13:37,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:37 BoogieIcfgContainer [2020-11-12 00:13:37,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:13:37,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:13:37,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:13:37,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:13:37,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:36" (1/3) ... [2020-11-12 00:13:37,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfe204d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:37, skipping insertion in model container [2020-11-12 00:13:37,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:37" (2/3) ... [2020-11-12 00:13:37,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfe204d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:37, skipping insertion in model container [2020-11-12 00:13:37,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:37" (3/3) ... [2020-11-12 00:13:37,794 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-11-12 00:13:37,813 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:13:37,813 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:13:37,818 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:13:37,819 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:13:37,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,860 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,867 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,867 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,879 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,880 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,880 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,884 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,884 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,885 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,885 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:13:37,888 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:13:37,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 00:13:37,929 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:13:37,930 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:13:37,930 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:13:37,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:13:37,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:13:37,930 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:13:37,930 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:13:37,931 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:13:37,944 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:13:37,946 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-12 00:13:37,950 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-12 00:13:37,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 00:13:38,027 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-12 00:13:38,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:13:38,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-12 00:13:38,035 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-12 00:13:41,659 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-12 00:13:42,371 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-12 00:13:42,993 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-12 00:13:43,100 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-12 00:13:43,331 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-12 00:13:43,451 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-12 00:13:43,456 INFO L131 LiptonReduction]: Checked pairs total: 3069 [2020-11-12 00:13:43,457 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-12 00:13:43,463 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-12 00:13:43,490 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 296 states have (on average 3.135135135135135) internal successors, (928), 297 states have internal predecessors, (928), 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 00:13:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 3.135135135135135) internal successors, (928), 297 states have internal predecessors, (928), 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 00:13:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 00:13:43,500 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:13:43,501 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:13:43,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:13:43,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:13:43,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1607215999, now seen corresponding path program 1 times [2020-11-12 00:13:43,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:13:43,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642011696] [2020-11-12 00:13:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:13:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:13:43,746 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 00:13:43,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642011696] [2020-11-12 00:13:43,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:13:43,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-12 00:13:43,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195239888] [2020-11-12 00:13:43,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:13:43,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:13:43,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:13:43,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:13:43,774 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 3.135135135135135) internal successors, (928), 297 states have internal predecessors, (928), 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 00:13:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:13:43,831 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-11-12 00:13:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:13:43,834 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 00:13:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:13:43,850 INFO L225 Difference]: With dead ends: 290 [2020-11-12 00:13:43,850 INFO L226 Difference]: Without dead ends: 226 [2020-11-12 00:13:43,852 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 00:13:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-12 00:13:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-12 00:13:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.7822222222222224) internal successors, (626), 225 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-11-12 00:13:43,924 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-11-12 00:13:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:13:43,926 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-11-12 00:13:43,926 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 00:13:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-11-12 00:13:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-12 00:13:43,927 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:13:43,928 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:13:43,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:13:43,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:13:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:13:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash 534085962, now seen corresponding path program 1 times [2020-11-12 00:13:43,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:13:43,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616308030] [2020-11-12 00:13:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:13:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:13:44,082 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 00:13:44,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616308030] [2020-11-12 00:13:44,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:13:44,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:13:44,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855296458] [2020-11-12 00:13:44,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:13:44,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:13:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:13:44,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:13:44,088 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:13:44,170 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2020-11-12 00:13:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:13:44,172 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 00:13:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:13:44,174 INFO L225 Difference]: With dead ends: 242 [2020-11-12 00:13:44,174 INFO L226 Difference]: Without dead ends: 178 [2020-11-12 00:13:44,175 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 00:13:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-12 00:13:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-11-12 00:13:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.4519774011299433) internal successors, (434), 177 states have internal predecessors, (434), 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 00:13:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 434 transitions. [2020-11-12 00:13:44,193 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 434 transitions. Word has length 9 [2020-11-12 00:13:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:13:44,193 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 434 transitions. [2020-11-12 00:13:44,194 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 00:13:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 434 transitions. [2020-11-12 00:13:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:13:44,195 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:13:44,195 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:13:44,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:13:44,196 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:13:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:13:44,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1716104201, now seen corresponding path program 1 times [2020-11-12 00:13:44,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:13:44,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077115879] [2020-11-12 00:13:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:13:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:13:44,291 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 00:13:44,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077115879] [2020-11-12 00:13:44,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:13:44,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:13:44,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348797504] [2020-11-12 00:13:44,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:13:44,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:13:44,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:13:44,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:13:44,296 INFO L87 Difference]: Start difference. First operand 178 states and 434 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 00:13:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:13:44,383 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-11-12 00:13:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:13:44,385 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 00:13:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:13:44,387 INFO L225 Difference]: With dead ends: 163 [2020-11-12 00:13:44,387 INFO L226 Difference]: Without dead ends: 126 [2020-11-12 00:13:44,387 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 00:13:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-12 00:13:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-11-12 00:13:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.224) internal successors, (278), 125 states have internal predecessors, (278), 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 00:13:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-11-12 00:13:44,398 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-11-12 00:13:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:13:44,398 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-11-12 00:13:44,398 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 00:13:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-11-12 00:13:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-12 00:13:44,400 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:13:44,400 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:13:44,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:13:44,401 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:13:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:13:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1195700441, now seen corresponding path program 1 times [2020-11-12 00:13:44,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:13:44,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92431535] [2020-11-12 00:13:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:13:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:13:44,537 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 00:13:44,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92431535] [2020-11-12 00:13:44,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:13:44,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:13:44,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143184828] [2020-11-12 00:13:44,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:13:44,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:13:44,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:13:44,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:13:44,543 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:13:44,675 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-11-12 00:13:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:13:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-12 00:13:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:13:44,678 INFO L225 Difference]: With dead ends: 118 [2020-11-12 00:13:44,679 INFO L226 Difference]: Without dead ends: 108 [2020-11-12 00:13:44,679 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 00:13:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-12 00:13:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-12 00:13:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.2616822429906542) internal successors, (242), 107 states have internal predecessors, (242), 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 00:13:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-11-12 00:13:44,696 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-11-12 00:13:44,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:13:44,698 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-11-12 00:13:44,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-11-12 00:13:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-12 00:13:44,701 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:13:44,701 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:13:44,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:13:44,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:13:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:13:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1370995832, now seen corresponding path program 1 times [2020-11-12 00:13:44,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:13:44,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434556192] [2020-11-12 00:13:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:13:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:13:44,771 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 00:13:44,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434556192] [2020-11-12 00:13:44,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:13:44,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:13:44,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351051224] [2020-11-12 00:13:44,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 00:13:44,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:13:44,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 00:13:44,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 00:13:44,774 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:13:44,807 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-11-12 00:13:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 00:13:44,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2020-11-12 00:13:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:13:44,808 INFO L225 Difference]: With dead ends: 133 [2020-11-12 00:13:44,808 INFO L226 Difference]: Without dead ends: 54 [2020-11-12 00:13:44,808 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 00:13:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-12 00:13:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-12 00:13:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-12 00:13:44,813 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-11-12 00:13:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:13:44,813 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-12 00:13:44,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-12 00:13:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-12 00:13:44,818 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:13:44,818 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:13:44,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:13:44,819 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:13:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:13:44,821 INFO L82 PathProgramCache]: Analyzing trace with hash -395208686, now seen corresponding path program 2 times [2020-11-12 00:13:44,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:13:44,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479599330] [2020-11-12 00:13:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:13:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:13:44,905 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 00:13:44,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479599330] [2020-11-12 00:13:44,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:13:44,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:13:44,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036904812] [2020-11-12 00:13:44,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:13:44,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:13:44,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:13:44,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:13:44,910 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:13:44,930 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-11-12 00:13:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:13:44,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2020-11-12 00:13:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:13:44,931 INFO L225 Difference]: With dead ends: 67 [2020-11-12 00:13:44,932 INFO L226 Difference]: Without dead ends: 30 [2020-11-12 00:13:44,932 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 00:13:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-12 00:13:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-12 00:13:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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 00:13:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-12 00:13:44,935 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-12 00:13:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:13:44,935 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-12 00:13:44,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-12 00:13:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-12 00:13:44,936 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:13:44,936 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:13:44,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:13:44,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:13:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:13:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2053338416, now seen corresponding path program 3 times [2020-11-12 00:13:44,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:13:44,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709928632] [2020-11-12 00:13:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:13:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:13:44,981 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 00:13:44,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709928632] [2020-11-12 00:13:44,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:13:44,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:13:44,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058582928] [2020-11-12 00:13:44,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:13:44,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:13:44,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:13:44,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:13:44,984 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:13:44,998 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-12 00:13:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 00:13:44,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2020-11-12 00:13:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:13:44,999 INFO L225 Difference]: With dead ends: 29 [2020-11-12 00:13:44,999 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:13:45,000 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 00:13:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:13:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:13:45,001 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 00:13:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:13:45,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-12 00:13:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:13:45,001 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:13:45,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 00:13:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:13:45,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:13:45,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:13:45,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:13:45 BasicIcfg [2020-11-12 00:13:45,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:13:45,008 INFO L168 Benchmark]: Toolchain (without parser) took 8814.91 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 275.9 MB in the beginning and 394.4 MB in the end (delta: -118.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2020-11-12 00:13:45,008 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:13:45,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.21 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 273.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 00:13:45,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.00 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 271.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:13:45,011 INFO L168 Benchmark]: Boogie Preprocessor took 59.50 ms. Allocated memory is still 302.0 MB. Free memory was 271.5 MB in the beginning and 270.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:13:45,012 INFO L168 Benchmark]: RCFGBuilder took 607.34 ms. Allocated memory is still 302.0 MB. Free memory was 270.0 MB in the beginning and 248.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 00:13:45,012 INFO L168 Benchmark]: TraceAbstraction took 7219.70 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 247.9 MB in the beginning and 394.4 MB in the end (delta: -146.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:13:45,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 821.21 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 273.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 91.00 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 271.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 59.50 ms. Allocated memory is still 302.0 MB. Free memory was 271.5 MB in the beginning and 270.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 607.34 ms. Allocated memory is still 302.0 MB. Free memory was 270.0 MB in the beginning and 248.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7219.70 ms. Allocated memory was 302.0 MB in the beginning and 436.2 MB in the end (delta: 134.2 MB). Free memory was 247.9 MB in the beginning and 394.4 MB in the end (delta: -146.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1036 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 94 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.5s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 3069 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 141 SDtfs, 112 SDslu, 191 SDs, 0 SdLazy, 96 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2714 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...