/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-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:45:54,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:45:54,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:45:54,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:45:54,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:45:54,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:45:54,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:45:54,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:45:54,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:45:54,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:45:54,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:45:54,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:45:54,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:45:54,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:45:54,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:45:54,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:45:54,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:45:54,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:45:54,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:45:54,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:45:54,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:45:54,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:45:54,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:45:54,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:45:54,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:45:54,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:45:54,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:45:54,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:45:54,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:45:54,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:45:54,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:45:54,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:45:54,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:45:54,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:45:54,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:45:54,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:45:54,315 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-WP.epf [2020-11-09 15:45:54,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:45:54,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:45:54,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:45:54,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:45:54,344 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:45:54,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:45:54,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:45:54,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:45:54,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:45:54,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:45:54,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:45:54,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:45:54,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:45:54,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:45:54,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:45:54,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:45:54,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:45:54,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:45:54,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:45:54,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:45:54,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:45:54,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:45:54,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:45:54,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:45:54,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:45:54,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:45:54,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:45:54,349 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:45:54,349 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:45:54,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:45:54,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:45:54,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:45:54,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:45:54,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:45:54,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:45:54,832 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:45:54,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-11-09 15:45:54,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743a3e740/0826ff81fec24b8886121a16028c00a8/FLAG6108f2942 [2020-11-09 15:45:55,716 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:45:55,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-11-09 15:45:55,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743a3e740/0826ff81fec24b8886121a16028c00a8/FLAG6108f2942 [2020-11-09 15:45:56,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743a3e740/0826ff81fec24b8886121a16028c00a8 [2020-11-09 15:45:56,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:45:56,017 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:45:56,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:45:56,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:45:56,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:45:56,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3a9ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56, skipping insertion in model container [2020-11-09 15:45:56,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:45:56,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:45:56,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:45:56,554 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:45:56,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:45:56,732 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:45:56,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56 WrapperNode [2020-11-09 15:45:56,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:45:56,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:45:56,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:45:56,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:45:56,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:45:56,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:45:56,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:45:56,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:45:56,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (1/1) ... [2020-11-09 15:45:56,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:45:56,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:45:56,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:45:56,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:45:56,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (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 15:45:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:45:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:45:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:45:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:45:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:45:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:45:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:45:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:45:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:45:56,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:45:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:45:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:45:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:45:56,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:45:56,963 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 15:45:57,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:45:57,483 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:45:57,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:45:57 BoogieIcfgContainer [2020-11-09 15:45:57,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:45:57,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:45:57,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:45:57,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:45:57,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:45:56" (1/3) ... [2020-11-09 15:45:57,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148a55e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:45:57, skipping insertion in model container [2020-11-09 15:45:57,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:45:56" (2/3) ... [2020-11-09 15:45:57,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148a55e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:45:57, skipping insertion in model container [2020-11-09 15:45:57,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:45:57" (3/3) ... [2020-11-09 15:45:57,495 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-11-09 15:45:57,512 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:45:57,513 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:45:57,517 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:45:57,518 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:45:57,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,562 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,562 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,562 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,562 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,562 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,568 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,568 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,569 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,569 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,574 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,574 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,583 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,591 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:45:57,596 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:45:57,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:45:57,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:45:57,636 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:45:57,636 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:45:57,637 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:45:57,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:45:57,637 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:45:57,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:45:57,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:45:57,651 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:45:57,652 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:57,655 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:57,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 15:45:57,708 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 15:45:57,708 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:45:57,717 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 62 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. [2020-11-09 15:45:57,721 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:46:00,459 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-11-09 15:46:01,991 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-09 15:46:02,268 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-09 15:46:02,729 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-09 15:46:02,851 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-09 15:46:02,967 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-09 15:46:03,084 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-09 15:46:03,877 WARN L194 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 15:46:04,028 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 15:46:04,409 WARN L194 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 15:46:04,581 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 15:46:04,792 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:46:04,971 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:46:05,155 WARN L194 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:46:05,349 WARN L194 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:46:05,355 INFO L131 LiptonReduction]: Checked pairs total: 2778 [2020-11-09 15:46:05,356 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 15:46:05,363 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 15:46:05,397 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 15:46:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 15:46:05,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:46:05,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:05,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:05,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash -345538935, now seen corresponding path program 1 times [2020-11-09 15:46:05,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:05,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702132100] [2020-11-09 15:46:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:05,640 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 15:46:05,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702132100] [2020-11-09 15:46:05,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:05,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:46:05,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [566608177] [2020-11-09 15:46:05,648 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:05,653 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:05,673 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:46:05,680 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:05,685 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:05,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 15:46:05,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:05,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 15:46:05,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:46:05,703 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 15:46:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:05,736 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 15:46:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 15:46:05,739 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 15:46:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:05,767 INFO L225 Difference]: With dead ends: 362 [2020-11-09 15:46:05,768 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 15:46:05,769 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 15:46:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 15:46:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 15:46:05,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 15:46:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 15:46:05,911 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 15:46:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:05,912 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 15:46:05,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 15:46:05,913 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 15:46:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:46:05,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:05,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:05,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:46:05,916 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:05,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:05,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2121797576, now seen corresponding path program 1 times [2020-11-09 15:46:05,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:05,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531400849] [2020-11-09 15:46:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:06,063 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 15:46:06,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531400849] [2020-11-09 15:46:06,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:06,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:46:06,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [930917846] [2020-11-09 15:46:06,064 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:06,066 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:06,067 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 15:46:06,068 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:06,068 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:06,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:46:06,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:46:06,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:46:06,071 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 15:46:06,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:06,115 INFO L93 Difference]: Finished difference Result 298 states and 816 transitions. [2020-11-09 15:46:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:46:06,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 15:46:06,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:06,119 INFO L225 Difference]: With dead ends: 298 [2020-11-09 15:46:06,119 INFO L226 Difference]: Without dead ends: 234 [2020-11-09 15:46:06,120 INFO L677 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 [2020-11-09 15:46:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-09 15:46:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-09 15:46:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-09 15:46:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-11-09 15:46:06,138 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 9 [2020-11-09 15:46:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:06,139 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-11-09 15:46:06,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:46:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-11-09 15:46:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:46:06,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:06,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:06,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:46:06,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:06,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:06,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1060758680, now seen corresponding path program 1 times [2020-11-09 15:46:06,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:06,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988907416] [2020-11-09 15:46:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:06,274 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 15:46:06,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988907416] [2020-11-09 15:46:06,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:06,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:46:06,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318008055] [2020-11-09 15:46:06,276 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:06,277 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:06,279 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-11-09 15:46:06,279 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:06,295 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:06,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:46:06,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:46:06,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:46:06,296 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 4 states. [2020-11-09 15:46:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:06,353 INFO L93 Difference]: Finished difference Result 346 states and 916 transitions. [2020-11-09 15:46:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:46:06,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 15:46:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:06,356 INFO L225 Difference]: With dead ends: 346 [2020-11-09 15:46:06,356 INFO L226 Difference]: Without dead ends: 164 [2020-11-09 15:46:06,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 15:46:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-09 15:46:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-11-09 15:46:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-09 15:46:06,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 432 transitions. [2020-11-09 15:46:06,365 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 432 transitions. Word has length 11 [2020-11-09 15:46:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:06,366 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 432 transitions. [2020-11-09 15:46:06,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:46:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 432 transitions. [2020-11-09 15:46:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:46:06,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:06,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:06,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:46:06,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1476250237, now seen corresponding path program 1 times [2020-11-09 15:46:06,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:06,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967219063] [2020-11-09 15:46:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:06,517 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 15:46:06,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967219063] [2020-11-09 15:46:06,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:06,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:46:06,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1254662222] [2020-11-09 15:46:06,518 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:06,520 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:06,523 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-11-09 15:46:06,523 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:06,553 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:46:06,604 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:46:06,642 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:46:06,663 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3229#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:46:06,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:46:06,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:06,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:46:06,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:46:06,665 INFO L87 Difference]: Start difference. First operand 164 states and 432 transitions. Second operand 5 states. [2020-11-09 15:46:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:06,778 INFO L93 Difference]: Finished difference Result 139 states and 326 transitions. [2020-11-09 15:46:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:46:06,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:46:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:06,780 INFO L225 Difference]: With dead ends: 139 [2020-11-09 15:46:06,780 INFO L226 Difference]: Without dead ends: 87 [2020-11-09 15:46:06,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:46:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-09 15:46:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-09 15:46:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-09 15:46:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 172 transitions. [2020-11-09 15:46:06,785 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 172 transitions. Word has length 12 [2020-11-09 15:46:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:06,785 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 172 transitions. [2020-11-09 15:46:06,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:46:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 172 transitions. [2020-11-09 15:46:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:46:06,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:06,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:46:06,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:46:06,787 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:06,788 INFO L82 PathProgramCache]: Analyzing trace with hash 809328863, now seen corresponding path program 1 times [2020-11-09 15:46:06,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:06,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455131385] [2020-11-09 15:46:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:06,909 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 15:46:06,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455131385] [2020-11-09 15:46:06,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:06,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 15:46:06,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2050520230] [2020-11-09 15:46:06,910 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:06,912 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:06,916 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-11-09 15:46:06,917 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:06,945 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3553#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:46:06,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:46:06,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:06,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:46:06,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:46:06,947 INFO L87 Difference]: Start difference. First operand 87 states and 172 transitions. Second operand 7 states. [2020-11-09 15:46:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:07,050 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-11-09 15:46:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:46:07,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 15:46:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:07,052 INFO L225 Difference]: With dead ends: 76 [2020-11-09 15:46:07,052 INFO L226 Difference]: Without dead ends: 67 [2020-11-09 15:46:07,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:46:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-09 15:46:07,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-09 15:46:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-09 15:46:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 132 transitions. [2020-11-09 15:46:07,057 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 132 transitions. Word has length 15 [2020-11-09 15:46:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:07,057 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 132 transitions. [2020-11-09 15:46:07,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:46:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 132 transitions. [2020-11-09 15:46:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:46:07,059 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:07,059 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 15:46:07,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:46:07,059 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1097223765, now seen corresponding path program 1 times [2020-11-09 15:46:07,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:07,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226918232] [2020-11-09 15:46:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:07,366 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 15:46:07,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226918232] [2020-11-09 15:46:07,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:07,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 15:46:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1833756910] [2020-11-09 15:46:07,372 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:07,377 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:07,388 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 68 transitions. [2020-11-09 15:46:07,389 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:07,679 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3776#(and (= ~__unbuffered_p0_EAX~0 1) (<= 1 ~__unbuffered_cnt~0) (<= ~__unbuffered_cnt~0 1)), 3777#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 15:46:07,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 15:46:07,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:07,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 15:46:07,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-09 15:46:07,681 INFO L87 Difference]: Start difference. First operand 67 states and 132 transitions. Second operand 12 states. [2020-11-09 15:46:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:08,177 INFO L93 Difference]: Finished difference Result 104 states and 194 transitions. [2020-11-09 15:46:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 15:46:08,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-09 15:46:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:08,179 INFO L225 Difference]: With dead ends: 104 [2020-11-09 15:46:08,179 INFO L226 Difference]: Without dead ends: 57 [2020-11-09 15:46:08,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-09 15:46:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-09 15:46:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-09 15:46:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-09 15:46:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 78 transitions. [2020-11-09 15:46:08,184 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 78 transitions. Word has length 18 [2020-11-09 15:46:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:08,184 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 78 transitions. [2020-11-09 15:46:08,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 15:46:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 78 transitions. [2020-11-09 15:46:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:46:08,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:08,185 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 15:46:08,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:46:08,186 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:08,186 INFO L82 PathProgramCache]: Analyzing trace with hash -30995043, now seen corresponding path program 2 times [2020-11-09 15:46:08,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:08,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526581680] [2020-11-09 15:46:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:08,473 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 15:46:08,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526581680] [2020-11-09 15:46:08,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:08,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 15:46:08,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1350133374] [2020-11-09 15:46:08,475 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:08,478 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:08,485 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 58 transitions. [2020-11-09 15:46:08,486 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:08,590 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3992#(and (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0) (= ~__unbuffered_p1_EAX~0 1))] [2020-11-09 15:46:08,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 15:46:08,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:08,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 15:46:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-09 15:46:08,592 INFO L87 Difference]: Start difference. First operand 46 states and 78 transitions. Second operand 11 states. [2020-11-09 15:46:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:08,838 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2020-11-09 15:46:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 15:46:08,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-09 15:46:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:08,840 INFO L225 Difference]: With dead ends: 54 [2020-11-09 15:46:08,840 INFO L226 Difference]: Without dead ends: 44 [2020-11-09 15:46:08,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-09 15:46:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-09 15:46:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-09 15:46:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-09 15:46:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2020-11-09 15:46:08,845 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 18 [2020-11-09 15:46:08,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:08,845 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2020-11-09 15:46:08,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 15:46:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2020-11-09 15:46:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:46:08,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:08,846 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 15:46:08,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:46:08,847 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -196901277, now seen corresponding path program 3 times [2020-11-09 15:46:08,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:08,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751338311] [2020-11-09 15:46:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:09,066 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 15:46:09,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751338311] [2020-11-09 15:46:09,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:09,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 15:46:09,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2048779839] [2020-11-09 15:46:09,068 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:09,070 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:09,080 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-11-09 15:46:09,080 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:09,250 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4149#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0)), 4150#(and (= ~x~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 15:46:09,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 15:46:09,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 15:46:09,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-09 15:46:09,252 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand 12 states. [2020-11-09 15:46:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:09,586 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2020-11-09 15:46:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 15:46:09,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-09 15:46:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:09,587 INFO L225 Difference]: With dead ends: 52 [2020-11-09 15:46:09,587 INFO L226 Difference]: Without dead ends: 44 [2020-11-09 15:46:09,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-09 15:46:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-09 15:46:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-09 15:46:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-09 15:46:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2020-11-09 15:46:09,591 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 18 [2020-11-09 15:46:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:09,591 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2020-11-09 15:46:09,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 15:46:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-11-09 15:46:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:46:09,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:09,592 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 15:46:09,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:46:09,592 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:09,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1712999733, now seen corresponding path program 4 times [2020-11-09 15:46:09,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:09,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952129595] [2020-11-09 15:46:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:09,817 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 15:46:09,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952129595] [2020-11-09 15:46:09,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:09,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 15:46:09,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [544761441] [2020-11-09 15:46:09,818 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:09,821 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:09,831 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-11-09 15:46:09,831 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:10,003 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [4305#(and (= ~__unbuffered_p0_EAX~0 1) (<= 1 ~__unbuffered_cnt~0) (<= ~__unbuffered_cnt~0 1)), 4306#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0)), 4307#(and (= ~x~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 15:46:10,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 15:46:10,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:10,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 15:46:10,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-11-09 15:46:10,005 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 13 states. [2020-11-09 15:46:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:10,362 INFO L93 Difference]: Finished difference Result 50 states and 77 transitions. [2020-11-09 15:46:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 15:46:10,363 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-09 15:46:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:10,364 INFO L225 Difference]: With dead ends: 50 [2020-11-09 15:46:10,364 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 15:46:10,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-11-09 15:46:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 15:46:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-11-09 15:46:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-09 15:46:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-11-09 15:46:10,367 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2020-11-09 15:46:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:10,368 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-11-09 15:46:10,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 15:46:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-11-09 15:46:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:46:10,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:46:10,368 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 15:46:10,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:46:10,369 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:46:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:46:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1731427213, now seen corresponding path program 5 times [2020-11-09 15:46:10,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:46:10,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482845137] [2020-11-09 15:46:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:46:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:46:10,453 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 15:46:10,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482845137] [2020-11-09 15:46:10,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:46:10,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:46:10,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [871845817] [2020-11-09 15:46:10,455 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:46:10,457 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:46:10,473 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-11-09 15:46:10,473 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:46:10,518 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:46:10,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:46:10,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:46:10,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:46:10,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:46:10,520 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-11-09 15:46:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:46:10,570 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2020-11-09 15:46:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:46:10,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 15:46:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:46:10,571 INFO L225 Difference]: With dead ends: 39 [2020-11-09 15:46:10,571 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:46:10,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:46:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:46:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:46:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:46:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:46:10,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 15:46:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:46:10,573 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:46:10,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:46:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:46:10,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:46:10,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:46:10,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:46:10 BasicIcfg [2020-11-09 15:46:10,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:46:10,581 INFO L168 Benchmark]: Toolchain (without parser) took 14569.29 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 134.9 MB in the beginning and 118.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 88.9 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:10,582 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 160.4 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:46:10,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.68 ms. Allocated memory is still 160.4 MB. Free memory was 134.2 MB in the beginning and 102.9 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:10,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 160.4 MB. Free memory was 102.7 MB in the beginning and 100.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:10,591 INFO L168 Benchmark]: Boogie Preprocessor took 80.65 ms. Allocated memory is still 160.4 MB. Free memory was 100.9 MB in the beginning and 143.5 MB in the end (delta: -42.6 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:10,594 INFO L168 Benchmark]: RCFGBuilder took 611.28 ms. Allocated memory is still 160.4 MB. Free memory was 143.5 MB in the beginning and 121.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:10,596 INFO L168 Benchmark]: TraceAbstraction took 13091.81 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 120.9 MB in the beginning and 118.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 74.8 MB. Max. memory is 8.0 GB. [2020-11-09 15:46:10,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 160.4 MB. Free memory is still 133.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 713.68 ms. Allocated memory is still 160.4 MB. Free memory was 134.2 MB in the beginning and 102.9 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 160.4 MB. Free memory was 102.7 MB in the beginning and 100.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.65 ms. Allocated memory is still 160.4 MB. Free memory was 100.9 MB in the beginning and 143.5 MB in the end (delta: -42.6 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 611.28 ms. Allocated memory is still 160.4 MB. Free memory was 143.5 MB in the beginning and 121.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13091.81 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 120.9 MB in the beginning and 118.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 74.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 777 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.7s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2778 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: 12.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: 225 SDtfs, 174 SDslu, 851 SDs, 0 SdLazy, 729 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.6s 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, 10 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 9355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...