/usr/bin/java -Xmx8000000000 -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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 16:59:44,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 16:59:44,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 16:59:44,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 16:59:44,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 16:59:44,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 16:59:44,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 16:59:44,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 16:59:44,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 16:59:44,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 16:59:44,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 16:59:44,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 16:59:44,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 16:59:44,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 16:59:44,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 16:59:44,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 16:59:44,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 16:59:44,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 16:59:44,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 16:59:44,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 16:59:44,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 16:59:44,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 16:59:44,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 16:59:44,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 16:59:44,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 16:59:44,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 16:59:44,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 16:59:44,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 16:59:44,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 16:59:44,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 16:59:44,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 16:59:44,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 16:59:44,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 16:59:44,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 16:59:44,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 16:59:44,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 16:59:44,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 16:59:44,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 16:59:44,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 16:59:44,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 16:59:44,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 16:59:44,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 16:59:44,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 16:59:44,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 16:59:44,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 16:59:44,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 16:59:44,638 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 16:59:44,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 16:59:44,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 16:59:44,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 16:59:44,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 16:59:44,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 16:59:44,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 16:59:44,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 16:59:44,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 16:59:44,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 16:59:44,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 16:59:44,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 16:59:44,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 16:59:44,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 16:59:44,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 16:59:44,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 16:59:44,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 16:59:44,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 16:59:44,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 16:59:44,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 16:59:44,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 16:59:44,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 16:59:44,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 16:59:44,646 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 16:59:44,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 16:59:44,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 16:59:44,647 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 16:59:45,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 16:59:45,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 16:59:45,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 16:59:45,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 16:59:45,061 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 16:59:45,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-09 16:59:45,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc46e142/6d96f4e369ca45aa93278899609495af/FLAG533cbbe32 [2020-11-09 16:59:45,948 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 16:59:45,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-09 16:59:45,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc46e142/6d96f4e369ca45aa93278899609495af/FLAG533cbbe32 [2020-11-09 16:59:46,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dc46e142/6d96f4e369ca45aa93278899609495af [2020-11-09 16:59:46,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 16:59:46,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 16:59:46,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 16:59:46,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 16:59:46,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 16:59:46,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fdc7625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46, skipping insertion in model container [2020-11-09 16:59:46,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 16:59:46,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 16:59:46,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:59:46,689 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 16:59:46,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:59:46,863 INFO L208 MainTranslator]: Completed translation [2020-11-09 16:59:46,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46 WrapperNode [2020-11-09 16:59:46,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 16:59:46,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 16:59:46,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 16:59:46,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 16:59:46,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 16:59:46,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 16:59:46,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 16:59:46,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 16:59:46,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:46,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:47,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (1/1) ... [2020-11-09 16:59:47,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 16:59:47,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 16:59:47,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 16:59:47,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 16:59:47,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (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 [2020-11-09 16:59:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 16:59:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 16:59:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 16:59:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 16:59:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 16:59:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 16:59:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 16:59:47,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 16:59:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 16:59:47,113 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 16:59:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 16:59:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 16:59:47,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 16:59:47,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 16:59:47,116 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 16:59:47,555 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 16:59:47,555 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 16:59:47,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:47 BoogieIcfgContainer [2020-11-09 16:59:47,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 16:59:47,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 16:59:47,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 16:59:47,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 16:59:47,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:59:46" (1/3) ... [2020-11-09 16:59:47,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d43964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:47, skipping insertion in model container [2020-11-09 16:59:47,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:46" (2/3) ... [2020-11-09 16:59:47,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d43964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:47, skipping insertion in model container [2020-11-09 16:59:47,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:47" (3/3) ... [2020-11-09 16:59:47,566 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-11-09 16:59:47,581 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 16:59:47,582 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 16:59:47,586 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 16:59:47,587 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 16:59:47,620 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,625 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,625 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,627 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,629 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,640 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,641 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,644 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,644 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:59:47,646 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 16:59:47,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 16:59:47,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 16:59:47,682 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 16:59:47,682 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 16:59:47,682 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 16:59:47,682 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 16:59:47,682 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 16:59:47,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 16:59:47,683 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 16:59:47,696 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 16:59:47,696 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 16:59:47,700 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 16:59:47,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 16:59:47,747 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 16:59:47,748 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 16:59:47,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 16:59:47,755 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 16:59:50,288 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-09 16:59:50,489 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-09 16:59:51,360 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 16:59:51,686 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 16:59:51,802 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 16:59:51,823 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-09 16:59:51,824 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 16:59:51,833 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 16:59:51,885 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 16:59:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 16:59:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 16:59:51,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:51,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:51,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-09 16:59:51,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:51,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787079497] [2020-11-09 16:59:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:59:52,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787079497] [2020-11-09 16:59:52,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:52,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:59:52,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1400975898] [2020-11-09 16:59:52,205 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:52,208 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:52,221 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 16:59:52,222 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:52,226 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:52,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 16:59:52,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 16:59:52,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 16:59:52,244 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 16:59:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:52,272 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 16:59:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 16:59:52,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 16:59:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:52,290 INFO L225 Difference]: With dead ends: 362 [2020-11-09 16:59:52,290 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 16:59:52,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 16:59:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 16:59:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 16:59:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 16:59:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 16:59:52,393 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 16:59:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:52,395 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 16:59:52,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 16:59:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 16:59:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 16:59:52,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:52,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:52,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 16:59:52,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-09 16:59:52,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:52,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658520330] [2020-11-09 16:59:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:59:52,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658520330] [2020-11-09 16:59:52,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:52,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:59:52,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [12005757] [2020-11-09 16:59:52,513 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:52,515 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:52,516 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 16:59:52,517 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:52,521 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:52,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 16:59:52,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:52,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 16:59:52,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 16:59:52,525 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-09 16:59:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:52,564 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-09 16:59:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 16:59:52,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 16:59:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:52,573 INFO L225 Difference]: With dead ends: 217 [2020-11-09 16:59:52,574 INFO L226 Difference]: Without dead ends: 217 [2020-11-09 16:59:52,575 INFO L677 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 [2020-11-09 16:59:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-09 16:59:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-09 16:59:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-09 16:59:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-09 16:59:52,609 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-09 16:59:52,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:52,609 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-09 16:59:52,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 16:59:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-09 16:59:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 16:59:52,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:52,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:52,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 16:59:52,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:52,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-09 16:59:52,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:52,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609333316] [2020-11-09 16:59:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:59:52,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609333316] [2020-11-09 16:59:52,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:52,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:52,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [157059888] [2020-11-09 16:59:52,728 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:52,729 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:52,733 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-11-09 16:59:52,733 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:52,890 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2430#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 16:59:52,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 16:59:52,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:52,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 16:59:52,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:52,892 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-11-09 16:59:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:52,936 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-09 16:59:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:59:52,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 16:59:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:52,938 INFO L225 Difference]: With dead ends: 136 [2020-11-09 16:59:52,938 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 16:59:52,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:52,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 16:59:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 16:59:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 16:59:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 16:59:52,947 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 16:59:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:52,947 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 16:59:52,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 16:59:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 16:59:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 16:59:52,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:52,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:52,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 16:59:52,950 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:52,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:52,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-09 16:59:52,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:52,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370828007] [2020-11-09 16:59:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:59:53,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370828007] [2020-11-09 16:59:53,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 16:59:53,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [867740477] [2020-11-09 16:59:53,020 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,022 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,028 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 85 transitions. [2020-11-09 16:59:53,028 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,167 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2844#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 16:59:53,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 16:59:53,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 16:59:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 16:59:53,170 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-09 16:59:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,208 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-09 16:59:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:59:53,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 16:59:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,209 INFO L225 Difference]: With dead ends: 109 [2020-11-09 16:59:53,209 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 16:59:53,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 16:59:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 16:59:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 16:59:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 16:59:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 16:59:53,215 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 16:59:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,216 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 16:59:53,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 16:59:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 16:59:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:59:53,218 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:53,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:53,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 16:59:53,218 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:53,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-09 16:59:53,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:53,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205909301] [2020-11-09 16:59:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:59:53,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205909301] [2020-11-09 16:59:53,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:53,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [852557766] [2020-11-09 16:59:53,297 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,300 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,312 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 105 transitions. [2020-11-09 16:59:53,312 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,324 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:53,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:59:53,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:59:53,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:59:53,326 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 16:59:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,362 INFO L93 Difference]: Finished difference Result 127 states and 273 transitions. [2020-11-09 16:59:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:59:53,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 16:59:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,363 INFO L225 Difference]: With dead ends: 127 [2020-11-09 16:59:53,363 INFO L226 Difference]: Without dead ends: 93 [2020-11-09 16:59:53,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-09 16:59:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-09 16:59:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-09 16:59:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 199 transitions. [2020-11-09 16:59:53,376 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 199 transitions. Word has length 18 [2020-11-09 16:59:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,376 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 199 transitions. [2020-11-09 16:59:53,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:59:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 199 transitions. [2020-11-09 16:59:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:59:53,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:53,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:53,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 16:59:53,378 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:53,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-11-09 16:59:53,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:53,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332115116] [2020-11-09 16:59:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:59:53,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332115116] [2020-11-09 16:59:53,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:53,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [592698355] [2020-11-09 16:59:53,479 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,482 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,492 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 104 transitions. [2020-11-09 16:59:53,492 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,587 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:53,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 16:59:53,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 16:59:53,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:53,589 INFO L87 Difference]: Start difference. First operand 93 states and 199 transitions. Second operand 5 states. [2020-11-09 16:59:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,623 INFO L93 Difference]: Finished difference Result 131 states and 273 transitions. [2020-11-09 16:59:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:59:53,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 16:59:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,624 INFO L225 Difference]: With dead ends: 131 [2020-11-09 16:59:53,624 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 16:59:53,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 16:59:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 16:59:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 16:59:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 16:59:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 121 transitions. [2020-11-09 16:59:53,629 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 121 transitions. Word has length 18 [2020-11-09 16:59:53,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,629 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 121 transitions. [2020-11-09 16:59:53,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 16:59:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 121 transitions. [2020-11-09 16:59:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:59:53,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:59:53,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:59:53,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 16:59:53,660 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:59:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:59:53,661 INFO L82 PathProgramCache]: Analyzing trace with hash 46641744, now seen corresponding path program 3 times [2020-11-09 16:59:53,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:59:53,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689513403] [2020-11-09 16:59:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:59:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:59:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:59:53,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689513403] [2020-11-09 16:59:53,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:59:53,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:59:53,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [433916566] [2020-11-09 16:59:53,719 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:59:53,722 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:59:53,726 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-11-09 16:59:53,727 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:59:53,730 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:59:53,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:59:53,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:59:53,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:59:53,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:59:53,731 INFO L87 Difference]: Start difference. First operand 63 states and 121 transitions. Second operand 4 states. [2020-11-09 16:59:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:59:53,745 INFO L93 Difference]: Finished difference Result 62 states and 120 transitions. [2020-11-09 16:59:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:59:53,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 16:59:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:59:53,746 INFO L225 Difference]: With dead ends: 62 [2020-11-09 16:59:53,746 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 16:59:53,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:59:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 16:59:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 16:59:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 16:59:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 16:59:53,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 16:59:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:59:53,748 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 16:59:53,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:59:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 16:59:53,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 16:59:53,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 16:59:53,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:59:53 BasicIcfg [2020-11-09 16:59:53,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 16:59:53,754 INFO L168 Benchmark]: Toolchain (without parser) took 7588.64 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 125.5 MB in the beginning and 182.9 MB in the end (delta: -57.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,754 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 152.0 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:59:53,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.32 ms. Allocated memory is still 152.0 MB. Free memory was 124.7 MB in the beginning and 131.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.39 ms. Allocated memory is still 152.0 MB. Free memory was 131.9 MB in the beginning and 129.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,757 INFO L168 Benchmark]: Boogie Preprocessor took 63.76 ms. Allocated memory is still 152.0 MB. Free memory was 129.8 MB in the beginning and 128.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,757 INFO L168 Benchmark]: RCFGBuilder took 545.53 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 106.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:59:53,758 INFO L168 Benchmark]: TraceAbstraction took 6192.55 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 106.2 MB in the beginning and 182.9 MB in the end (delta: -76.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:59:53,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 152.0 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 689.32 ms. Allocated memory is still 152.0 MB. Free memory was 124.7 MB in the beginning and 131.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.39 ms. Allocated memory is still 152.0 MB. Free memory was 131.9 MB in the beginning and 129.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.76 ms. Allocated memory is still 152.0 MB. Free memory was 129.8 MB in the beginning and 128.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 545.53 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 106.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6192.55 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 106.2 MB in the beginning and 182.9 MB in the end (delta: -76.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 778 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 124 SDtfs, 66 SDslu, 177 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2862 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...