/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:37:23,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:37:23,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:37:23,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 17:37:23,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 17:37:23,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 17:37:23,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 17:37:23,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 17:37:23,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 17:37:23,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 17:37:23,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 17:37:23,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 17:37:23,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:37:23,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:37:23,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:37:23,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:37:23,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:37:23,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:37:23,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:37:23,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:37:23,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:37:23,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:37:23,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:37:23,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:37:23,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-10 17:37:23,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-10 17:37:23,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-10 17:37:23,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-10 17:37:23,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-10 17:37:23,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-10 17:37:23,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-10 17:37:23,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-10 17:37:23,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-10 17:37:23,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-10 17:37:23,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-10 17:37:23,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-10 17:37:23,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-10 17:37:23,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-10 17:37:23,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:37:23,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:37:23,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:37:23,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:37:23,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:37:23,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:37:23,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:37:23,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:37:23,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:37:23,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:37:23,319 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:37:23,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:37:23,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:37:23,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:37:23,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:37:23,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:37:23,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:37:23,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:37:23,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:37:23,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:37:23,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:37:23,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:37:23,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:37:23,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:37:23,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:37:23,322 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:37:23,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:37:23,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:37:23,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:37:23,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:37:23,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:37:23,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:37:23,584 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:37:23,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-03-10 17:37:23,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b133cafff/5fac1f737fbc4ce784f1d9fc12f2f226/FLAGab97dff7a [2021-03-10 17:37:24,088 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:37:24,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-03-10 17:37:24,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b133cafff/5fac1f737fbc4ce784f1d9fc12f2f226/FLAGab97dff7a [2021-03-10 17:37:24,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b133cafff/5fac1f737fbc4ce784f1d9fc12f2f226 [2021-03-10 17:37:24,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:37:24,617 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:37:24,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:37:24,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:37:24,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:37:24,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f417674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24, skipping insertion in model container [2021-03-10 17:37:24,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:37:24,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:37:24,744 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i[949,962] [2021-03-10 17:37:24,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:37:24,884 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:37:24,891 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i[949,962] [2021-03-10 17:37:24,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:37:24,955 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:37:24,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24 WrapperNode [2021-03-10 17:37:24,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:37:24,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:37:24,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:37:24,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:37:24,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:37:24,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:37:24,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:37:24,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:37:24,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (1/1) ... [2021-03-10 17:37:24,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:37:24,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:37:24,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:37:24,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:37:24,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (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 [2021-03-10 17:37:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:37:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:37:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:37:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:37:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:37:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-10 17:37:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:37:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:37:25,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:37:25,046 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:37:25,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:37:25,278 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:37:25,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:37:25 BoogieIcfgContainer [2021-03-10 17:37:25,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:37:25,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:37:25,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:37:25,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:37:25,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:37:24" (1/3) ... [2021-03-10 17:37:25,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5d1586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:37:25, skipping insertion in model container [2021-03-10 17:37:25,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:37:24" (2/3) ... [2021-03-10 17:37:25,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5d1586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:37:25, skipping insertion in model container [2021-03-10 17:37:25,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:37:25" (3/3) ... [2021-03-10 17:37:25,285 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2021-03-10 17:37:25,288 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:37:25,289 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:37:25,291 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:37:25,292 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:37:25,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,346 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,347 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,349 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,351 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,352 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,352 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,353 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,353 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,353 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,353 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,353 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,353 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,353 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,354 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,355 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,367 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,367 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,377 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,377 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,377 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,378 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:37:25,384 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:37:25,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-10 17:37:25,421 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:37:25,421 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:37:25,421 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:37:25,421 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:37:25,421 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:37:25,421 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:37:25,422 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:37:25,423 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:37:25,435 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 91 transitions, 202 flow [2021-03-10 17:37:34,127 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 66446 states, 66444 states have (on average 4.439813978688821) internal successors, (294999), 66445 states have internal predecessors, (294999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 66446 states, 66444 states have (on average 4.439813978688821) internal successors, (294999), 66445 states have internal predecessors, (294999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:37:34,401 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:34,401 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:34,402 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:34,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:34,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1187004493, now seen corresponding path program 1 times [2021-03-10 17:37:34,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:34,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355227047] [2021-03-10 17:37:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:34,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355227047] [2021-03-10 17:37:34,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:34,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:37:34,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199766712] [2021-03-10 17:37:34,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:37:34,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:37:34,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:37:34,789 INFO L87 Difference]: Start difference. First operand has 66446 states, 66444 states have (on average 4.439813978688821) internal successors, (294999), 66445 states have internal predecessors, (294999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:35,837 INFO L93 Difference]: Finished difference Result 90113 states and 391529 transitions. [2021-03-10 17:37:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:37:35,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 17:37:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:36,127 INFO L225 Difference]: With dead ends: 90113 [2021-03-10 17:37:36,128 INFO L226 Difference]: Without dead ends: 28716 [2021-03-10 17:37:36,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:37:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28716 states. [2021-03-10 17:37:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28716 to 28716. [2021-03-10 17:37:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28716 states, 28715 states have (on average 4.266724708340589) internal successors, (122519), 28715 states have internal predecessors, (122519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28716 states to 28716 states and 122519 transitions. [2021-03-10 17:37:37,524 INFO L78 Accepts]: Start accepts. Automaton has 28716 states and 122519 transitions. Word has length 47 [2021-03-10 17:37:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:37,525 INFO L480 AbstractCegarLoop]: Abstraction has 28716 states and 122519 transitions. [2021-03-10 17:37:37,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 28716 states and 122519 transitions. [2021-03-10 17:37:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:37:37,553 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:37,553 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:37,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:37:37,554 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:37,556 INFO L82 PathProgramCache]: Analyzing trace with hash -654752332, now seen corresponding path program 1 times [2021-03-10 17:37:37,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:37,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554087694] [2021-03-10 17:37:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:37,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554087694] [2021-03-10 17:37:37,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:37,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:37,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285714615] [2021-03-10 17:37:37,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:37,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:37,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:37,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:37,684 INFO L87 Difference]: Start difference. First operand 28716 states and 122519 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:38,127 INFO L93 Difference]: Finished difference Result 32636 states and 138010 transitions. [2021-03-10 17:37:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:37:38,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 17:37:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:38,263 INFO L225 Difference]: With dead ends: 32636 [2021-03-10 17:37:38,263 INFO L226 Difference]: Without dead ends: 25776 [2021-03-10 17:37:38,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:37:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25776 states. [2021-03-10 17:37:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25776 to 25776. [2021-03-10 17:37:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25776 states, 25775 states have (on average 4.238486905916586) internal successors, (109247), 25775 states have internal predecessors, (109247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25776 states to 25776 states and 109247 transitions. [2021-03-10 17:37:39,029 INFO L78 Accepts]: Start accepts. Automaton has 25776 states and 109247 transitions. Word has length 49 [2021-03-10 17:37:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:39,030 INFO L480 AbstractCegarLoop]: Abstraction has 25776 states and 109247 transitions. [2021-03-10 17:37:39,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:39,030 INFO L276 IsEmpty]: Start isEmpty. Operand 25776 states and 109247 transitions. [2021-03-10 17:37:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 17:37:39,064 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:39,064 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:39,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:37:39,064 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1386290067, now seen corresponding path program 1 times [2021-03-10 17:37:39,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:39,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405060806] [2021-03-10 17:37:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:39,298 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2021-03-10 17:37:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:39,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405060806] [2021-03-10 17:37:39,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:39,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:37:39,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861705834] [2021-03-10 17:37:39,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:37:39,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:39,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:37:39,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:37:39,355 INFO L87 Difference]: Start difference. First operand 25776 states and 109247 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:39,591 INFO L93 Difference]: Finished difference Result 28576 states and 120152 transitions. [2021-03-10 17:37:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:37:39,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-03-10 17:37:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:39,666 INFO L225 Difference]: With dead ends: 28576 [2021-03-10 17:37:39,666 INFO L226 Difference]: Without dead ends: 23676 [2021-03-10 17:37:39,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 284.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:37:39,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23676 states. [2021-03-10 17:37:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23676 to 23676. [2021-03-10 17:37:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23676 states, 23675 states have (on average 4.21909186906019) internal successors, (99887), 23675 states have internal predecessors, (99887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23676 states to 23676 states and 99887 transitions. [2021-03-10 17:37:40,472 INFO L78 Accepts]: Start accepts. Automaton has 23676 states and 99887 transitions. Word has length 51 [2021-03-10 17:37:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:40,472 INFO L480 AbstractCegarLoop]: Abstraction has 23676 states and 99887 transitions. [2021-03-10 17:37:40,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 23676 states and 99887 transitions. [2021-03-10 17:37:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-03-10 17:37:40,513 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:40,513 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:40,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:37:40,513 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:40,514 INFO L82 PathProgramCache]: Analyzing trace with hash 619511508, now seen corresponding path program 1 times [2021-03-10 17:37:40,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:40,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63076391] [2021-03-10 17:37:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:40,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63076391] [2021-03-10 17:37:40,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:40,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:40,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724103168] [2021-03-10 17:37:40,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:40,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:40,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:40,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:40,609 INFO L87 Difference]: Start difference. First operand 23676 states and 99887 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:41,303 INFO L93 Difference]: Finished difference Result 41401 states and 174122 transitions. [2021-03-10 17:37:41,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:37:41,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-03-10 17:37:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:41,389 INFO L225 Difference]: With dead ends: 41401 [2021-03-10 17:37:41,389 INFO L226 Difference]: Without dead ends: 31026 [2021-03-10 17:37:41,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 220.8ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:37:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31026 states. [2021-03-10 17:37:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31026 to 25426. [2021-03-10 17:37:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25426 states, 25425 states have (on average 4.214827925270403) internal successors, (107162), 25425 states have internal predecessors, (107162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25426 states to 25426 states and 107162 transitions. [2021-03-10 17:37:42,286 INFO L78 Accepts]: Start accepts. Automaton has 25426 states and 107162 transitions. Word has length 53 [2021-03-10 17:37:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:42,287 INFO L480 AbstractCegarLoop]: Abstraction has 25426 states and 107162 transitions. [2021-03-10 17:37:42,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 25426 states and 107162 transitions. [2021-03-10 17:37:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-03-10 17:37:42,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:42,325 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:42,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:37:42,325 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:42,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2092395542, now seen corresponding path program 2 times [2021-03-10 17:37:42,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:42,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459439328] [2021-03-10 17:37:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:42,597 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2021-03-10 17:37:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:42,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459439328] [2021-03-10 17:37:42,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:42,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:37:42,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493994798] [2021-03-10 17:37:42,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:37:42,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:42,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:37:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:37:42,624 INFO L87 Difference]: Start difference. First operand 25426 states and 107162 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:42,924 INFO L93 Difference]: Finished difference Result 34736 states and 145655 transitions. [2021-03-10 17:37:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:37:42,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-03-10 17:37:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:42,970 INFO L225 Difference]: With dead ends: 34736 [2021-03-10 17:37:42,970 INFO L226 Difference]: Without dead ends: 17481 [2021-03-10 17:37:42,971 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:37:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17481 states. [2021-03-10 17:37:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17481 to 17481. [2021-03-10 17:37:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17481 states, 17480 states have (on average 4.101086956521739) internal successors, (71687), 17480 states have internal predecessors, (71687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17481 states to 17481 states and 71687 transitions. [2021-03-10 17:37:43,556 INFO L78 Accepts]: Start accepts. Automaton has 17481 states and 71687 transitions. Word has length 53 [2021-03-10 17:37:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:43,556 INFO L480 AbstractCegarLoop]: Abstraction has 17481 states and 71687 transitions. [2021-03-10 17:37:43,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 17481 states and 71687 transitions. [2021-03-10 17:37:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-03-10 17:37:43,579 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:43,579 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:43,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:37:43,579 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:43,579 INFO L82 PathProgramCache]: Analyzing trace with hash 759918592, now seen corresponding path program 1 times [2021-03-10 17:37:43,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:43,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621619963] [2021-03-10 17:37:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:43,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621619963] [2021-03-10 17:37:43,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:43,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:37:43,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201170211] [2021-03-10 17:37:43,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:37:43,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:43,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:37:43,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:37:43,677 INFO L87 Difference]: Start difference. First operand 17481 states and 71687 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:43,856 INFO L93 Difference]: Finished difference Result 19081 states and 77747 transitions. [2021-03-10 17:37:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:37:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-03-10 17:37:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:43,902 INFO L225 Difference]: With dead ends: 19081 [2021-03-10 17:37:43,902 INFO L226 Difference]: Without dead ends: 16281 [2021-03-10 17:37:43,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:37:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16281 states. [2021-03-10 17:37:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16281 to 16281. [2021-03-10 17:37:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16281 states, 16280 states have (on average 4.082739557739558) internal successors, (66467), 16280 states have internal predecessors, (66467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:44,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16281 states to 16281 states and 66467 transitions. [2021-03-10 17:37:44,461 INFO L78 Accepts]: Start accepts. Automaton has 16281 states and 66467 transitions. Word has length 54 [2021-03-10 17:37:44,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:44,462 INFO L480 AbstractCegarLoop]: Abstraction has 16281 states and 66467 transitions. [2021-03-10 17:37:44,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 16281 states and 66467 transitions. [2021-03-10 17:37:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-03-10 17:37:44,505 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:44,505 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:44,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:37:44,505 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:44,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:44,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2126596737, now seen corresponding path program 1 times [2021-03-10 17:37:44,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:44,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72413323] [2021-03-10 17:37:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:44,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72413323] [2021-03-10 17:37:44,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:44,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:37:44,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969788798] [2021-03-10 17:37:44,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:37:44,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:44,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:37:44,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:37:44,575 INFO L87 Difference]: Start difference. First operand 16281 states and 66467 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:44,762 INFO L93 Difference]: Finished difference Result 24121 states and 97963 transitions. [2021-03-10 17:37:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:37:44,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-03-10 17:37:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:44,789 INFO L225 Difference]: With dead ends: 24121 [2021-03-10 17:37:44,789 INFO L226 Difference]: Without dead ends: 10851 [2021-03-10 17:37:44,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 87.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:37:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2021-03-10 17:37:44,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10851. [2021-03-10 17:37:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10851 states, 10850 states have (on average 3.955483870967742) internal successors, (42917), 10850 states have internal predecessors, (42917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10851 states to 10851 states and 42917 transitions. [2021-03-10 17:37:45,005 INFO L78 Accepts]: Start accepts. Automaton has 10851 states and 42917 transitions. Word has length 56 [2021-03-10 17:37:45,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:45,006 INFO L480 AbstractCegarLoop]: Abstraction has 10851 states and 42917 transitions. [2021-03-10 17:37:45,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 10851 states and 42917 transitions. [2021-03-10 17:37:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-03-10 17:37:45,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:45,021 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:45,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:37:45,021 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:45,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:45,021 INFO L82 PathProgramCache]: Analyzing trace with hash -938736035, now seen corresponding path program 1 times [2021-03-10 17:37:45,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:45,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149532899] [2021-03-10 17:37:45,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:45,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149532899] [2021-03-10 17:37:45,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:45,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:37:45,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735634867] [2021-03-10 17:37:45,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:37:45,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:45,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:37:45,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:37:45,106 INFO L87 Difference]: Start difference. First operand 10851 states and 42917 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:45,267 INFO L93 Difference]: Finished difference Result 14211 states and 56165 transitions. [2021-03-10 17:37:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:37:45,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-03-10 17:37:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:45,284 INFO L225 Difference]: With dead ends: 14211 [2021-03-10 17:37:45,284 INFO L226 Difference]: Without dead ends: 6591 [2021-03-10 17:37:45,285 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:37:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-03-10 17:37:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6591. [2021-03-10 17:37:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6591 states, 6590 states have (on average 3.882094081942337) internal successors, (25583), 6590 states have internal predecessors, (25583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 25583 transitions. [2021-03-10 17:37:45,532 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 25583 transitions. Word has length 57 [2021-03-10 17:37:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:45,532 INFO L480 AbstractCegarLoop]: Abstraction has 6591 states and 25583 transitions. [2021-03-10 17:37:45,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 25583 transitions. [2021-03-10 17:37:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-03-10 17:37:45,539 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:37:45,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:37:45,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:37:45,539 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:37:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:37:45,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1810480547, now seen corresponding path program 1 times [2021-03-10 17:37:45,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:37:45,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333441768] [2021-03-10 17:37:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:37:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:37:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:37:45,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333441768] [2021-03-10 17:37:45,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:37:45,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:37:45,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947993438] [2021-03-10 17:37:45,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:37:45,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:37:45,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:37:45,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:37:45,619 INFO L87 Difference]: Start difference. First operand 6591 states and 25583 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:37:45,719 INFO L93 Difference]: Finished difference Result 5951 states and 22991 transitions. [2021-03-10 17:37:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:37:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-03-10 17:37:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:37:45,720 INFO L225 Difference]: With dead ends: 5951 [2021-03-10 17:37:45,720 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:37:45,720 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:37:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:37:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:37:45,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:37:45,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-03-10 17:37:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:37:45,721 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:37:45,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:37:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:37:45,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:37:45,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:37:45,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:37:45 BasicIcfg [2021-03-10 17:37:45,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:37:45,725 INFO L168 Benchmark]: Toolchain (without parser) took 21110.70 ms. Allocated memory was 255.9 MB in the beginning and 10.1 GB in the end (delta: 9.9 GB). Free memory was 234.8 MB in the beginning and 8.4 GB in the end (delta: -8.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. [2021-03-10 17:37:45,725 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:37:45,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.68 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 233.9 MB in the beginning and 348.1 MB in the end (delta: -114.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:45,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.59 ms. Allocated memory is still 385.9 MB. Free memory was 348.1 MB in the beginning and 346.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:45,729 INFO L168 Benchmark]: Boogie Preprocessor took 14.23 ms. Allocated memory is still 385.9 MB. Free memory was 346.1 MB in the beginning and 345.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:45,729 INFO L168 Benchmark]: RCFGBuilder took 282.50 ms. Allocated memory is still 385.9 MB. Free memory was 344.5 MB in the beginning and 319.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:37:45,731 INFO L168 Benchmark]: TraceAbstraction took 20443.66 ms. Allocated memory was 385.9 MB in the beginning and 10.1 GB in the end (delta: 9.8 GB). Free memory was 319.3 MB in the beginning and 8.4 GB in the end (delta: -8.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 16.0 GB. [2021-03-10 17:37:45,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 338.68 ms. Allocated memory was 255.9 MB in the beginning and 385.9 MB in the end (delta: 130.0 MB). Free memory was 233.9 MB in the beginning and 348.1 MB in the end (delta: -114.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.59 ms. Allocated memory is still 385.9 MB. Free memory was 348.1 MB in the beginning and 346.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.23 ms. Allocated memory is still 385.9 MB. Free memory was 346.1 MB in the beginning and 345.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 282.50 ms. Allocated memory is still 385.9 MB. Free memory was 344.5 MB in the beginning and 319.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 20443.66 ms. Allocated memory was 385.9 MB in the beginning and 10.1 GB in the end (delta: 9.8 GB). Free memory was 319.3 MB in the beginning and 8.4 GB in the end (delta: -8.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20302.5ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 499.8ms, AutomataDifference: 4186.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8704.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1112 SDtfs, 1868 SDslu, 3680 SDs, 0 SdLazy, 254 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1177.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=66446occurred in iteration=0, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5460.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 5600 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.1ms SsaConstructionTime, 157.1ms SatisfiabilityAnalysisTime, 1106.1ms InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 1921 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...