/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-344d29da17dfcedfb91d6006a5dbd12b556a868d-344d29d [2021-02-16 17:19:17,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-16 17:19:17,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-16 17:19:17,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-16 17:19:17,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-16 17:19:17,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-16 17:19:17,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-16 17:19:17,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-16 17:19:17,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-16 17:19:17,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-16 17:19:17,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-16 17:19:17,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-16 17:19:17,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-16 17:19:17,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-16 17:19:17,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-16 17:19:17,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-16 17:19:17,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-16 17:19:17,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-16 17:19:17,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-16 17:19:17,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-16 17:19:17,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-16 17:19:17,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-16 17:19:17,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-16 17:19:17,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-16 17:19:17,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-16 17:19:17,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-16 17:19:17,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-16 17:19:17,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-16 17:19:17,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-16 17:19:17,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-02-16 17:19:17,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-16 17:19:17,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-16 17:19:17,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-16 17:19:17,257 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 [2021-02-16 17:19:17,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-16 17:19:17,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-16 17:19:17,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-16 17:19:17,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-16 17:19:17,289 INFO L138 SettingsManager]: * Use SBE=true [2021-02-16 17:19:17,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-16 17:19:17,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-16 17:19:17,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-16 17:19:17,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-16 17:19:17,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-16 17:19:17,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-16 17:19:17,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-16 17:19:17,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-16 17:19:17,291 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-16 17:19:17,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-16 17:19:17,291 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-16 17:19:17,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-16 17:19:17,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-16 17:19:17,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-16 17:19:17,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-16 17:19:17,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-16 17:19:17,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-16 17:19:17,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-16 17:19:17,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-16 17:19:17,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-16 17:19:17,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-16 17:19:17,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-16 17:19:17,294 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-16 17:19:17,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-16 17:19:17,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-16 17:19:17,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-16 17:19:17,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-16 17:19:17,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-16 17:19:17,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-16 17:19:17,775 INFO L275 PluginConnector]: CDTParser initialized [2021-02-16 17:19:17,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-02-16 17:19:17,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b1c865d/ba75ecb4d8084065867a431a5cfebe3f/FLAGc1da47a83 [2021-02-16 17:19:18,628 INFO L306 CDTParser]: Found 1 translation units. [2021-02-16 17:19:18,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2021-02-16 17:19:18,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b1c865d/ba75ecb4d8084065867a431a5cfebe3f/FLAGc1da47a83 [2021-02-16 17:19:18,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b1c865d/ba75ecb4d8084065867a431a5cfebe3f [2021-02-16 17:19:18,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-16 17:19:18,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-02-16 17:19:18,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-16 17:19:18,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-16 17:19:18,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-16 17:19:18,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:19:18" (1/1) ... [2021-02-16 17:19:18,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f17682a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:18, skipping insertion in model container [2021-02-16 17:19:18,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:19:18" (1/1) ... [2021-02-16 17:19:18,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-16 17:19:19,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-16 17:19:19,233 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/safe002_tso.opt.i[949,962] [2021-02-16 17:19:19,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:19:19,473 INFO L203 MainTranslator]: Completed pre-run [2021-02-16 17:19:19,491 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/safe002_tso.opt.i[949,962] [2021-02-16 17:19:19,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:19:19,672 INFO L208 MainTranslator]: Completed translation [2021-02-16 17:19:19,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19 WrapperNode [2021-02-16 17:19:19,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-16 17:19:19,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-16 17:19:19,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-16 17:19:19,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-16 17:19:19,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-16 17:19:19,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-16 17:19:19,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-16 17:19:19,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-16 17:19:19,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (1/1) ... [2021-02-16 17:19:19,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-16 17:19:19,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-16 17:19:19,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-16 17:19:19,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-16 17:19:19,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (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 [2021-02-16 17:19:19,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-16 17:19:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-02-16 17:19:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-16 17:19:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-16 17:19:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-02-16 17:19:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-02-16 17:19:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-02-16 17:19:19,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-02-16 17:19:19,911 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-02-16 17:19:19,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-02-16 17:19:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-16 17:19:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-02-16 17:19:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-16 17:19:19,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-16 17:19:19,914 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-16 17:19:20,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-16 17:19:20,444 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-16 17:19:20,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:19:20 BoogieIcfgContainer [2021-02-16 17:19:20,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-16 17:19:20,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-16 17:19:20,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-16 17:19:20,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-16 17:19:20,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 05:19:18" (1/3) ... [2021-02-16 17:19:20,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b31d634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:19:20, skipping insertion in model container [2021-02-16 17:19:20,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:19:19" (2/3) ... [2021-02-16 17:19:20,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b31d634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:19:20, skipping insertion in model container [2021-02-16 17:19:20,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:19:20" (3/3) ... [2021-02-16 17:19:20,455 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2021-02-16 17:19:20,463 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-16 17:19:20,464 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-16 17:19:20,470 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-16 17:19:20,471 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-16 17:19:20,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,508 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,510 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,510 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,513 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,513 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,513 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,519 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,526 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,527 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,527 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,536 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,537 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:19:20,540 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-02-16 17:19:20,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-02-16 17:19:20,605 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-16 17:19:20,605 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-16 17:19:20,605 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-16 17:19:20,605 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-16 17:19:20,606 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-16 17:19:20,606 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-16 17:19:20,606 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-16 17:19:20,606 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-16 17:19:20,624 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-02-16 17:19:21,381 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-02-16 17:19:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-02-16 17:19:21,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-16 17:19:21,456 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:21,457 INFO L505 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] [2021-02-16 17:19:21,457 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1780672703, now seen corresponding path program 1 times [2021-02-16 17:19:21,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:21,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697075047] [2021-02-16 17:19:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:21,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:21,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:21,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:21,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:21,896 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:19:21,898 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:19:21,934 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:19:21,937 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:19:21,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:21,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:21,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:21,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:21,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:21,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:22,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697075047] [2021-02-16 17:19:22,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:22,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:19:22,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909836460] [2021-02-16 17:19:22,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:19:22,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:22,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:19:22,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:19:22,119 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-02-16 17:19:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:22,777 INFO L93 Difference]: Finished difference Result 16832 states and 57853 transitions. [2021-02-16 17:19:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-16 17:19:22,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-02-16 17:19:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:22,851 INFO L225 Difference]: With dead ends: 16832 [2021-02-16 17:19:22,851 INFO L226 Difference]: Without dead ends: 5404 [2021-02-16 17:19:22,853 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:19:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-02-16 17:19:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 4612. [2021-02-16 17:19:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 4611 states have (on average 3.373454782042941) internal successors, (15555), 4611 states have internal predecessors, (15555), 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) [2021-02-16 17:19:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 15555 transitions. [2021-02-16 17:19:23,231 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 15555 transitions. Word has length 40 [2021-02-16 17:19:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:23,233 INFO L480 AbstractCegarLoop]: Abstraction has 4612 states and 15555 transitions. [2021-02-16 17:19:23,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-02-16 17:19:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 15555 transitions. [2021-02-16 17:19:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-16 17:19:23,246 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:23,246 INFO L505 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] [2021-02-16 17:19:23,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-16 17:19:23,247 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash 936081420, now seen corresponding path program 1 times [2021-02-16 17:19:23,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:23,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099481846] [2021-02-16 17:19:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:23,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:23,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:23,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:23,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:23,378 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:19:23,379 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:19:23,396 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:19:23,399 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:19:23,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:23,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:23,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:23,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:23,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:23,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:23,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099481846] [2021-02-16 17:19:23,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:23,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:19:23,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428352295] [2021-02-16 17:19:23,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:19:23,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:23,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:19:23,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:19:23,457 INFO L87 Difference]: Start difference. First operand 4612 states and 15555 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-02-16 17:19:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:23,881 INFO L93 Difference]: Finished difference Result 6340 states and 20963 transitions. [2021-02-16 17:19:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-16 17:19:23,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-02-16 17:19:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:23,927 INFO L225 Difference]: With dead ends: 6340 [2021-02-16 17:19:23,927 INFO L226 Difference]: Without dead ends: 5236 [2021-02-16 17:19:23,929 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:19:23,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2021-02-16 17:19:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 4052. [2021-02-16 17:19:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 4051 states have (on average 3.354974080473957) internal successors, (13591), 4051 states have internal predecessors, (13591), 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) [2021-02-16 17:19:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 13591 transitions. [2021-02-16 17:19:24,167 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 13591 transitions. Word has length 43 [2021-02-16 17:19:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:24,168 INFO L480 AbstractCegarLoop]: Abstraction has 4052 states and 13591 transitions. [2021-02-16 17:19:24,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-02-16 17:19:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 13591 transitions. [2021-02-16 17:19:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-16 17:19:24,186 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:24,187 INFO L505 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] [2021-02-16 17:19:24,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-16 17:19:24,187 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:24,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1813236477, now seen corresponding path program 1 times [2021-02-16 17:19:24,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:24,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872618864] [2021-02-16 17:19:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:24,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:24,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:24,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:24,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:24,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:24,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:24,363 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:19:24,365 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:19:24,379 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:19:24,382 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:19:24,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:24,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:24,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:24,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:24,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:24,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:24,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872618864] [2021-02-16 17:19:24,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:24,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:19:24,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300902584] [2021-02-16 17:19:24,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:19:24,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:24,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:19:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:19:24,440 INFO L87 Difference]: Start difference. First operand 4052 states and 13591 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:19:24,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:24,725 INFO L93 Difference]: Finished difference Result 5422 states and 18067 transitions. [2021-02-16 17:19:24,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-16 17:19:24,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-16 17:19:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:24,750 INFO L225 Difference]: With dead ends: 5422 [2021-02-16 17:19:24,751 INFO L226 Difference]: Without dead ends: 2650 [2021-02-16 17:19:24,752 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:19:24,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2021-02-16 17:19:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2650. [2021-02-16 17:19:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2649 states have (on average 3.243865609664024) internal successors, (8593), 2649 states have internal predecessors, (8593), 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) [2021-02-16 17:19:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 8593 transitions. [2021-02-16 17:19:24,870 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 8593 transitions. Word has length 44 [2021-02-16 17:19:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:24,870 INFO L480 AbstractCegarLoop]: Abstraction has 2650 states and 8593 transitions. [2021-02-16 17:19:24,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:19:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 8593 transitions. [2021-02-16 17:19:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-16 17:19:24,879 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:24,879 INFO L505 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] [2021-02-16 17:19:24,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-16 17:19:24,880 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1935786254, now seen corresponding path program 1 times [2021-02-16 17:19:24,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:24,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204970090] [2021-02-16 17:19:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:25,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:25,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:25,028 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:19:25,031 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:19:25,047 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:19:25,048 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:19:25,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:25,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:25,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:25,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204970090] [2021-02-16 17:19:25,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:25,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:19:25,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153910779] [2021-02-16 17:19:25,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:19:25,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:19:25,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:19:25,157 INFO L87 Difference]: Start difference. First operand 2650 states and 8593 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-02-16 17:19:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:25,323 INFO L93 Difference]: Finished difference Result 2930 states and 9427 transitions. [2021-02-16 17:19:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-16 17:19:25,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 [2021-02-16 17:19:25,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:25,346 INFO L225 Difference]: With dead ends: 2930 [2021-02-16 17:19:25,346 INFO L226 Difference]: Without dead ends: 2530 [2021-02-16 17:19:25,346 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-02-16 17:19:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-02-16 17:19:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2390. [2021-02-16 17:19:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2389 states have (on average 3.218920050230222) internal successors, (7690), 2389 states have internal predecessors, (7690), 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) [2021-02-16 17:19:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 7690 transitions. [2021-02-16 17:19:25,437 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 7690 transitions. Word has length 47 [2021-02-16 17:19:25,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:25,437 INFO L480 AbstractCegarLoop]: Abstraction has 2390 states and 7690 transitions. [2021-02-16 17:19:25,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2021-02-16 17:19:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 7690 transitions. [2021-02-16 17:19:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-16 17:19:25,445 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:25,446 INFO L505 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] [2021-02-16 17:19:25,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-16 17:19:25,446 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:25,447 INFO L82 PathProgramCache]: Analyzing trace with hash 409909020, now seen corresponding path program 1 times [2021-02-16 17:19:25,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:25,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698187837] [2021-02-16 17:19:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:25,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:25,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:25,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:25,510 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:19:25,511 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:19:25,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:25,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:25,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:25,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:25,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698187837] [2021-02-16 17:19:25,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:25,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:19:25,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437199985] [2021-02-16 17:19:25,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:19:25,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:25,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:19:25,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:19:25,570 INFO L87 Difference]: Start difference. First operand 2390 states and 7690 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-02-16 17:19:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:25,747 INFO L93 Difference]: Finished difference Result 3770 states and 12149 transitions. [2021-02-16 17:19:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-16 17:19:25,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 48 [2021-02-16 17:19:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:25,775 INFO L225 Difference]: With dead ends: 3770 [2021-02-16 17:19:25,775 INFO L226 Difference]: Without dead ends: 2100 [2021-02-16 17:19:25,776 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:19:25,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-02-16 17:19:25,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2100. [2021-02-16 17:19:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 3.2229633158646975) internal successors, (6765), 2099 states have internal predecessors, (6765), 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) [2021-02-16 17:19:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 6765 transitions. [2021-02-16 17:19:25,935 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 6765 transitions. Word has length 48 [2021-02-16 17:19:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:25,936 INFO L480 AbstractCegarLoop]: Abstraction has 2100 states and 6765 transitions. [2021-02-16 17:19:25,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-02-16 17:19:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 6765 transitions. [2021-02-16 17:19:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-16 17:19:25,954 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:25,954 INFO L505 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] [2021-02-16 17:19:25,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-16 17:19:25,954 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1361658786, now seen corresponding path program 2 times [2021-02-16 17:19:25,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:25,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217606254] [2021-02-16 17:19:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:26,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:26,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:26,044 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:19:26,045 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:19:26,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:19:26,075 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:19:26,076 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:19:26,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:26,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217606254] [2021-02-16 17:19:26,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:26,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-16 17:19:26,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821013013] [2021-02-16 17:19:26,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-16 17:19:26,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:26,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-16 17:19:26,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-16 17:19:26,093 INFO L87 Difference]: Start difference. First operand 2100 states and 6765 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-02-16 17:19:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:26,240 INFO L93 Difference]: Finished difference Result 2780 states and 8897 transitions. [2021-02-16 17:19:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-16 17:19:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 48 [2021-02-16 17:19:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:26,250 INFO L225 Difference]: With dead ends: 2780 [2021-02-16 17:19:26,250 INFO L226 Difference]: Without dead ends: 1948 [2021-02-16 17:19:26,250 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:19:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2021-02-16 17:19:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2021-02-16 17:19:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 3.1931176168464304) internal successors, (6217), 1947 states have internal predecessors, (6217), 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) [2021-02-16 17:19:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 6217 transitions. [2021-02-16 17:19:26,317 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 6217 transitions. Word has length 48 [2021-02-16 17:19:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:26,318 INFO L480 AbstractCegarLoop]: Abstraction has 1948 states and 6217 transitions. [2021-02-16 17:19:26,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-02-16 17:19:26,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 6217 transitions. [2021-02-16 17:19:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-16 17:19:26,324 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:26,325 INFO L505 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] [2021-02-16 17:19:26,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-16 17:19:26,325 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:26,326 INFO L82 PathProgramCache]: Analyzing trace with hash 536019477, now seen corresponding path program 1 times [2021-02-16 17:19:26,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:26,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374448816] [2021-02-16 17:19:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:26,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:26,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:26,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:26,386 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:19:26,387 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:19:26,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:19:26,417 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:19:26,419 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:19:26,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:26,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374448816] [2021-02-16 17:19:26,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:26,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:19:26,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976629594] [2021-02-16 17:19:26,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:19:26,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:26,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:19:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:19:26,438 INFO L87 Difference]: Start difference. First operand 1948 states and 6217 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) [2021-02-16 17:19:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:26,616 INFO L93 Difference]: Finished difference Result 2218 states and 6919 transitions. [2021-02-16 17:19:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-16 17:19:26,617 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 [2021-02-16 17:19:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:26,623 INFO L225 Difference]: With dead ends: 2218 [2021-02-16 17:19:26,623 INFO L226 Difference]: Without dead ends: 1498 [2021-02-16 17:19:26,623 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-16 17:19:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-02-16 17:19:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1498. [2021-02-16 17:19:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.0507682030728125) internal successors, (4567), 1497 states have internal predecessors, (4567), 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) [2021-02-16 17:19:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 4567 transitions. [2021-02-16 17:19:26,671 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 4567 transitions. Word has length 49 [2021-02-16 17:19:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:26,672 INFO L480 AbstractCegarLoop]: Abstraction has 1498 states and 4567 transitions. [2021-02-16 17:19:26,672 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) [2021-02-16 17:19:26,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 4567 transitions. [2021-02-16 17:19:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-16 17:19:26,676 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:26,677 INFO L505 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] [2021-02-16 17:19:26,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-16 17:19:26,677 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash 413003034, now seen corresponding path program 1 times [2021-02-16 17:19:26,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:26,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705766585] [2021-02-16 17:19:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:26,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:26,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:26,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:26,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:26,743 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:19:26,745 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:19:26,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:19:26,775 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:19:26,776 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:19:26,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:26,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:26,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705766585] [2021-02-16 17:19:26,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:26,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:19:26,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75588406] [2021-02-16 17:19:26,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:19:26,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:26,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:19:26,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:19:26,795 INFO L87 Difference]: Start difference. First operand 1498 states and 4567 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-02-16 17:19:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:26,991 INFO L93 Difference]: Finished difference Result 1309 states and 3874 transitions. [2021-02-16 17:19:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-16 17:19:26,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 50 [2021-02-16 17:19:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:26,995 INFO L225 Difference]: With dead ends: 1309 [2021-02-16 17:19:26,995 INFO L226 Difference]: Without dead ends: 877 [2021-02-16 17:19:26,996 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:19:26,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-02-16 17:19:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2021-02-16 17:19:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 2.8504566210045663) internal successors, (2497), 876 states have internal predecessors, (2497), 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) [2021-02-16 17:19:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2497 transitions. [2021-02-16 17:19:27,022 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2497 transitions. Word has length 50 [2021-02-16 17:19:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:27,022 INFO L480 AbstractCegarLoop]: Abstraction has 877 states and 2497 transitions. [2021-02-16 17:19:27,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-02-16 17:19:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2497 transitions. [2021-02-16 17:19:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-16 17:19:27,026 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:19:27,026 INFO L505 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] [2021-02-16 17:19:27,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-16 17:19:27,026 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:19:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:19:27,027 INFO L82 PathProgramCache]: Analyzing trace with hash 418798187, now seen corresponding path program 1 times [2021-02-16 17:19:27,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:19:27,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767972175] [2021-02-16 17:19:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:19:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:19:27,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:27,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:27,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:27,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:27,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:27,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:19:27,112 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:19:27,114 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:19:27,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:27,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:27,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:27,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:19:27,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:19:27,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:19:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:19:27,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767972175] [2021-02-16 17:19:27,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:19:27,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:19:27,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955598371] [2021-02-16 17:19:27,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:19:27,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:19:27,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:19:27,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:19:27,168 INFO L87 Difference]: Start difference. First operand 877 states and 2497 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-02-16 17:19:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:19:27,244 INFO L93 Difference]: Finished difference Result 823 states and 2335 transitions. [2021-02-16 17:19:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-16 17:19:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-02-16 17:19:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:19:27,245 INFO L225 Difference]: With dead ends: 823 [2021-02-16 17:19:27,245 INFO L226 Difference]: Without dead ends: 0 [2021-02-16 17:19:27,246 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:19:27,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-16 17:19:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-16 17:19:27,246 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) [2021-02-16 17:19:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-16 17:19:27,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-02-16 17:19:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:19:27,247 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-16 17:19:27,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-02-16 17:19:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-16 17:19:27,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-16 17:19:27,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-16 17:19:27,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 05:19:27 BasicIcfg [2021-02-16 17:19:27,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-16 17:19:27,254 INFO L168 Benchmark]: Toolchain (without parser) took 8322.16 ms. Allocated memory was 302.0 MB in the beginning and 704.6 MB in the end (delta: 402.7 MB). Free memory was 276.2 MB in the beginning and 448.8 MB in the end (delta: -172.6 MB). Peak memory consumption was 231.2 MB. Max. memory is 16.0 GB. [2021-02-16 17:19:27,255 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory was 273.1 MB in the beginning and 272.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 17:19:27,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.27 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 275.5 MB in the end (delta: -444.0 kB). Peak memory consumption was 28.1 MB. Max. memory is 16.0 GB. [2021-02-16 17:19:27,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.71 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 273.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-16 17:19:27,256 INFO L168 Benchmark]: Boogie Preprocessor took 28.58 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 272.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 17:19:27,257 INFO L168 Benchmark]: RCFGBuilder took 653.99 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 249.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-02-16 17:19:27,258 INFO L168 Benchmark]: TraceAbstraction took 6805.34 ms. Allocated memory was 302.0 MB in the beginning and 704.6 MB in the end (delta: 402.7 MB). Free memory was 248.2 MB in the beginning and 448.8 MB in the end (delta: -200.5 MB). Peak memory consumption was 203.2 MB. Max. memory is 16.0 GB. [2021-02-16 17:19:27,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory was 273.1 MB in the beginning and 272.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 724.27 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 275.5 MB in the end (delta: -444.0 kB). Peak memory consumption was 28.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 87.71 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 273.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.58 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 272.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 653.99 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 249.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6805.34 ms. Allocated memory was 302.0 MB in the beginning and 704.6 MB in the end (delta: 402.7 MB). Free memory was 248.2 MB in the beginning and 448.8 MB in the end (delta: -200.5 MB). Peak memory consumption was 203.2 MB. 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 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 857 SDtfs, 1399 SDslu, 2957 SDs, 0 SdLazy, 374 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 2116 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 412 ConstructedInterpolants, 0 QuantifiedInterpolants, 69128 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...