/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:27:04,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:27:04,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:27:04,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:27:04,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:27:04,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:27:04,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:27:04,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:27:04,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:27:04,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:27:04,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:27:04,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:27:04,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:27:04,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:27:04,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:27:04,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:27:04,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:27:04,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:27:04,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:27:04,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:27:04,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:27:04,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:27:04,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:27:04,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:27:04,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 11:27:04,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 11:27:04,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 11:27:04,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 11:27:04,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 11:27:04,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 11:27:04,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:27:04,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:27:04,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:27:04,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:27:04,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:27:04,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:27:04,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:27:04,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:27:04,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:27:04,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:27:04,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:27:04,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 11:27:04,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:27:04,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:27:04,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:27:04,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:27:04,967 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:27:04,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:27:04,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:27:04,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:27:04,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:27:04,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:27:04,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:27:04,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:27:04,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:27:04,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:27:04,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:27:04,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:27:04,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:27:04,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:27:04,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:27:04,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:27:04,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:27:04,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:27:04,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:27:04,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:27:04,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:27:04,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:27:04,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:27:04,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:27:04,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:27:05,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:27:05,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:27:05,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:27:05,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:27:05,297 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:27:05,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-11 11:27:05,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94997521/4b2bc52ee97e4d18b3f999073311a915/FLAGb79591d48 [2021-03-11 11:27:05,851 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:27:05,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-11 11:27:05,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94997521/4b2bc52ee97e4d18b3f999073311a915/FLAGb79591d48 [2021-03-11 11:27:06,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94997521/4b2bc52ee97e4d18b3f999073311a915 [2021-03-11 11:27:06,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:27:06,335 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:27:06,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:27:06,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:27:06,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:27:06,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ea07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06, skipping insertion in model container [2021-03-11 11:27:06,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:27:06,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:27:06,510 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/safe030_tso.oepc.i[950,963] [2021-03-11 11:27:06,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:27:06,666 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:27:06,675 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/safe030_tso.oepc.i[950,963] [2021-03-11 11:27:06,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:27:06,751 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:27:06,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06 WrapperNode [2021-03-11 11:27:06,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:27:06,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:27:06,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:27:06,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:27:06,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:27:06,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:27:06,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:27:06,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:27:06,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... [2021-03-11 11:27:06,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:27:06,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:27:06,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:27:06,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:27:06,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:27:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:27:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:27:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:27:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:27:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:27:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:27:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:27:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:27:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:27:06,892 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:27:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:27:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:27:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:27:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:27:06,894 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:27:07,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:27:07,171 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:27:07,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:27:07 BoogieIcfgContainer [2021-03-11 11:27:07,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:27:07,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:27:07,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:27:07,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:27:07,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:27:06" (1/3) ... [2021-03-11 11:27:07,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4772ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:27:07, skipping insertion in model container [2021-03-11 11:27:07,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:06" (2/3) ... [2021-03-11 11:27:07,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4772ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:27:07, skipping insertion in model container [2021-03-11 11:27:07,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:27:07" (3/3) ... [2021-03-11 11:27:07,180 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2021-03-11 11:27:07,184 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:27:07,185 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:27:07,188 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:27:07,188 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:27:07,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,230 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,230 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,230 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,230 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,238 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,238 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,238 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,239 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,241 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,242 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,242 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,254 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,254 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,258 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,258 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:07,261 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:27:07,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:27:07,301 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:27:07,301 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:27:07,301 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:27:07,302 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:27:07,302 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:27:07,302 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:27:07,302 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:27:07,302 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:27:07,319 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:27:07,338 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-03-11 11:27:07,340 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-03-11 11:27:07,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 11:27:07,393 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 11:27:07,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:27:07,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 11:27:07,398 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-11 11:27:09,391 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-03-11 11:27:09,595 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-03-11 11:27:09,661 INFO L131 LiptonReduction]: Checked pairs total: 2693 [2021-03-11 11:27:09,661 INFO L133 LiptonReduction]: Total number of compositions: 59 [2021-03-11 11:27:09,673 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-03-11 11:27:09,711 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:27:09,720 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:09,721 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:09,722 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:09,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1396936503, now seen corresponding path program 1 times [2021-03-11 11:27:09,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:09,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229159543] [2021-03-11 11:27:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:09,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:09,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:09,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:09,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:09,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229159543] [2021-03-11 11:27:09,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:09,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:09,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816290665] [2021-03-11 11:27:09,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:27:09,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:09,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:27:09,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:27:09,924 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:09,946 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-03-11 11:27:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:27:09,947 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-03-11 11:27:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:09,959 INFO L225 Difference]: With dead ends: 362 [2021-03-11 11:27:09,959 INFO L226 Difference]: Without dead ends: 298 [2021-03-11 11:27:09,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:27:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-03-11 11:27:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-03-11 11:27:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-03-11 11:27:10,018 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-03-11 11:27:10,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,018 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-03-11 11:27:10,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-03-11 11:27:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:27:10,020 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,020 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:27:10,021 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,022 INFO L82 PathProgramCache]: Analyzing trace with hash 355345073, now seen corresponding path program 1 times [2021-03-11 11:27:10,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586187981] [2021-03-11 11:27:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:10,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:10,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586187981] [2021-03-11 11:27:10,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:10,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813105100] [2021-03-11 11:27:10,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,166 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,190 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2021-03-11 11:27:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-03-11 11:27:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,193 INFO L225 Difference]: With dead ends: 346 [2021-03-11 11:27:10,193 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 11:27:10,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 11:27:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-03-11 11:27:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.8612099644128115) internal successors, (804), 281 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2021-03-11 11:27:10,214 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2021-03-11 11:27:10,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,214 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2021-03-11 11:27:10,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2021-03-11 11:27:10,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:27:10,216 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,216 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:27:10,216 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1971805489, now seen corresponding path program 1 times [2021-03-11 11:27:10,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473143541] [2021-03-11 11:27:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:10,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:10,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473143541] [2021-03-11 11:27:10,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:10,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257330394] [2021-03-11 11:27:10,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,295 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,319 INFO L93 Difference]: Finished difference Result 326 states and 888 transitions. [2021-03-11 11:27:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-03-11 11:27:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,328 INFO L225 Difference]: With dead ends: 326 [2021-03-11 11:27:10,329 INFO L226 Difference]: Without dead ends: 270 [2021-03-11 11:27:10,329 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-03-11 11:27:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-03-11 11:27:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.825278810408922) internal successors, (760), 269 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 760 transitions. [2021-03-11 11:27:10,361 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 760 transitions. Word has length 10 [2021-03-11 11:27:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,361 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 760 transitions. [2021-03-11 11:27:10,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 760 transitions. [2021-03-11 11:27:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:27:10,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:27:10,363 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,363 INFO L82 PathProgramCache]: Analyzing trace with hash 147014533, now seen corresponding path program 1 times [2021-03-11 11:27:10,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438649167] [2021-03-11 11:27:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:10,455 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:10,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438649167] [2021-03-11 11:27:10,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:10,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364702882] [2021-03-11 11:27:10,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,461 INFO L87 Difference]: Start difference. First operand 270 states and 760 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,479 INFO L93 Difference]: Finished difference Result 304 states and 822 transitions. [2021-03-11 11:27:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 11:27:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,485 INFO L225 Difference]: With dead ends: 304 [2021-03-11 11:27:10,485 INFO L226 Difference]: Without dead ends: 260 [2021-03-11 11:27:10,485 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-03-11 11:27:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-03-11 11:27:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.7953667953667956) internal successors, (724), 259 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 724 transitions. [2021-03-11 11:27:10,503 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 724 transitions. Word has length 11 [2021-03-11 11:27:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,503 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 724 transitions. [2021-03-11 11:27:10,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 724 transitions. [2021-03-11 11:27:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:27:10,510 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,510 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:27:10,510 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,512 INFO L82 PathProgramCache]: Analyzing trace with hash 262448525, now seen corresponding path program 1 times [2021-03-11 11:27:10,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889051293] [2021-03-11 11:27:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:10,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:10,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:10,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889051293] [2021-03-11 11:27:10,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:10,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042084906] [2021-03-11 11:27:10,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,580 INFO L87 Difference]: Start difference. First operand 260 states and 724 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,601 INFO L93 Difference]: Finished difference Result 398 states and 1047 transitions. [2021-03-11 11:27:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-03-11 11:27:10,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,603 INFO L225 Difference]: With dead ends: 398 [2021-03-11 11:27:10,603 INFO L226 Difference]: Without dead ends: 292 [2021-03-11 11:27:10,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-03-11 11:27:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 248. [2021-03-11 11:27:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.6558704453441297) internal successors, (656), 247 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 656 transitions. [2021-03-11 11:27:10,613 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 656 transitions. Word has length 12 [2021-03-11 11:27:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,614 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 656 transitions. [2021-03-11 11:27:10,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 656 transitions. [2021-03-11 11:27:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:27:10,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:27:10,615 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1487038153, now seen corresponding path program 1 times [2021-03-11 11:27:10,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916130304] [2021-03-11 11:27:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:10,684 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:27:10,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:10,694 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:10,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916130304] [2021-03-11 11:27:10,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:10,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402040398] [2021-03-11 11:27:10,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,701 INFO L87 Difference]: Start difference. First operand 248 states and 656 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,728 INFO L93 Difference]: Finished difference Result 388 states and 1000 transitions. [2021-03-11 11:27:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-03-11 11:27:10,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,730 INFO L225 Difference]: With dead ends: 388 [2021-03-11 11:27:10,730 INFO L226 Difference]: Without dead ends: 292 [2021-03-11 11:27:10,730 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-03-11 11:27:10,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 244. [2021-03-11 11:27:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.460905349794239) internal successors, (598), 243 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2021-03-11 11:27:10,737 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 12 [2021-03-11 11:27:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,738 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2021-03-11 11:27:10,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2021-03-11 11:27:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:27:10,738 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,739 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:27:10,739 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1502085491, now seen corresponding path program 1 times [2021-03-11 11:27:10,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132834393] [2021-03-11 11:27:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:10,813 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:27:10,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:10,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132834393] [2021-03-11 11:27:10,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:10,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523944958] [2021-03-11 11:27:10,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,821 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,845 INFO L93 Difference]: Finished difference Result 248 states and 536 transitions. [2021-03-11 11:27:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2021-03-11 11:27:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,848 INFO L225 Difference]: With dead ends: 248 [2021-03-11 11:27:10,848 INFO L226 Difference]: Without dead ends: 187 [2021-03-11 11:27:10,848 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-03-11 11:27:10,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-03-11 11:27:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.1236559139784945) internal successors, (395), 186 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 395 transitions. [2021-03-11 11:27:10,853 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 395 transitions. Word has length 12 [2021-03-11 11:27:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,853 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 395 transitions. [2021-03-11 11:27:10,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 395 transitions. [2021-03-11 11:27:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:27:10,854 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,854 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:27:10,854 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,855 INFO L82 PathProgramCache]: Analyzing trace with hash 749187583, now seen corresponding path program 1 times [2021-03-11 11:27:10,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054810921] [2021-03-11 11:27:10,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:10,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:10,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:10,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054810921] [2021-03-11 11:27:10,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:10,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061553369] [2021-03-11 11:27:10,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,901 INFO L87 Difference]: Start difference. First operand 187 states and 395 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,915 INFO L93 Difference]: Finished difference Result 245 states and 491 transitions. [2021-03-11 11:27:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-03-11 11:27:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,917 INFO L225 Difference]: With dead ends: 245 [2021-03-11 11:27:10,917 INFO L226 Difference]: Without dead ends: 201 [2021-03-11 11:27:10,917 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-03-11 11:27:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 174. [2021-03-11 11:27:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.098265895953757) internal successors, (363), 173 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 363 transitions. [2021-03-11 11:27:10,921 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 363 transitions. Word has length 13 [2021-03-11 11:27:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,922 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 363 transitions. [2021-03-11 11:27:10,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 363 transitions. [2021-03-11 11:27:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:27:10,922 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,922 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:27:10,923 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1990305454, now seen corresponding path program 1 times [2021-03-11 11:27:10,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220318141] [2021-03-11 11:27:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:10,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:10,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:10,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:10,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:27:10,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:27:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:10,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220318141] [2021-03-11 11:27:10,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:10,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:10,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123563969] [2021-03-11 11:27:10,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:10,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:10,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:10,952 INFO L87 Difference]: Start difference. First operand 174 states and 363 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:10,969 INFO L93 Difference]: Finished difference Result 232 states and 459 transitions. [2021-03-11 11:27:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:10,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-03-11 11:27:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:10,971 INFO L225 Difference]: With dead ends: 232 [2021-03-11 11:27:10,971 INFO L226 Difference]: Without dead ends: 188 [2021-03-11 11:27:10,971 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-03-11 11:27:10,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 165. [2021-03-11 11:27:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.073170731707317) internal successors, (340), 164 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 340 transitions. [2021-03-11 11:27:10,975 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 340 transitions. Word has length 13 [2021-03-11 11:27:10,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:10,976 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 340 transitions. [2021-03-11 11:27:10,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:10,976 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 340 transitions. [2021-03-11 11:27:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:27:10,976 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:10,976 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:10,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:27:10,977 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:10,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:10,977 INFO L82 PathProgramCache]: Analyzing trace with hash -667360468, now seen corresponding path program 1 times [2021-03-11 11:27:10,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:10,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024728826] [2021-03-11 11:27:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:11,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:11,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:11,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:11,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:11,008 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:27:11,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:11,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:11,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:11,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024728826] [2021-03-11 11:27:11,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:11,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:27:11,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222885489] [2021-03-11 11:27:11,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:27:11,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:11,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:27:11,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:11,016 INFO L87 Difference]: Start difference. First operand 165 states and 340 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:11,042 INFO L93 Difference]: Finished difference Result 147 states and 274 transitions. [2021-03-11 11:27:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:27:11,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-03-11 11:27:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:11,043 INFO L225 Difference]: With dead ends: 147 [2021-03-11 11:27:11,043 INFO L226 Difference]: Without dead ends: 96 [2021-03-11 11:27:11,043 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:27:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-03-11 11:27:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-03-11 11:27:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:11,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 163 transitions. [2021-03-11 11:27:11,046 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 163 transitions. Word has length 14 [2021-03-11 11:27:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:11,046 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 163 transitions. [2021-03-11 11:27:11,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 163 transitions. [2021-03-11 11:27:11,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 11:27:11,046 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:11,046 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:11,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 11:27:11,047 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:11,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2052251268, now seen corresponding path program 1 times [2021-03-11 11:27:11,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:11,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680682965] [2021-03-11 11:27:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:11,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:11,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:11,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:11,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:11,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:11,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:11,109 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 11:27:11,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:11,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:11,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:11,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680682965] [2021-03-11 11:27:11,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:11,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:27:11,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749827743] [2021-03-11 11:27:11,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:27:11,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:11,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:27:11,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:27:11,119 INFO L87 Difference]: Start difference. First operand 96 states and 163 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:11,138 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2021-03-11 11:27:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:27:11,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-03-11 11:27:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:11,139 INFO L225 Difference]: With dead ends: 82 [2021-03-11 11:27:11,139 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:27:11,139 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:27:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:27:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:27:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:27:11,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-03-11 11:27:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:11,140 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:27:11,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:27:11,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:27:11,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 11:27:11,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:27:11 BasicIcfg [2021-03-11 11:27:11,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:27:11,148 INFO L168 Benchmark]: Toolchain (without parser) took 4811.98 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 323.6 MB in the beginning and 207.5 MB in the end (delta: 116.1 MB). Peak memory consumption was 190.9 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:11,148 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 360.7 MB. Free memory was 342.1 MB in the beginning and 342.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:27:11,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.88 ms. Allocated memory is still 360.7 MB. Free memory was 323.0 MB in the beginning and 324.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:11,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.07 ms. Allocated memory is still 360.7 MB. Free memory was 324.7 MB in the beginning and 321.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:11,151 INFO L168 Benchmark]: Boogie Preprocessor took 40.14 ms. Allocated memory is still 360.7 MB. Free memory was 321.5 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:27:11,152 INFO L168 Benchmark]: RCFGBuilder took 339.92 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 296.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:11,154 INFO L168 Benchmark]: TraceAbstraction took 3968.69 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 296.3 MB in the beginning and 207.5 MB in the end (delta: 88.9 MB). Peak memory consumption was 162.3 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:11,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 360.7 MB. Free memory was 342.1 MB in the beginning and 342.0 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 409.88 ms. Allocated memory is still 360.7 MB. Free memory was 323.0 MB in the beginning and 324.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.07 ms. Allocated memory is still 360.7 MB. Free memory was 324.7 MB in the beginning and 321.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 40.14 ms. Allocated memory is still 360.7 MB. Free memory was 321.5 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 339.92 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 296.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3968.69 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 296.3 MB in the beginning and 207.5 MB in the end (delta: 88.9 MB). Peak memory consumption was 162.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2321.1ms, 81 PlacesBefore, 32 PlacesAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2693 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1411, positive: 1314, positive conditional: 0, positive unconditional: 1314, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 847, positive: 815, positive conditional: 0, positive unconditional: 815, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 847, positive: 809, positive conditional: 0, positive unconditional: 809, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 114, negative conditional: 0, negative unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1411, positive: 499, positive conditional: 0, positive unconditional: 499, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 847, unknown conditional: 0, unknown unconditional: 847] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3841.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 22.0ms, AutomataDifference: 305.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2409.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 282 SDtfs, 200 SDslu, 374 SDs, 0 SdLazy, 121 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 118.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 146.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 142 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.4ms SsaConstructionTime, 209.3ms SatisfiabilityAnalysisTime, 533.0ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...