/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:45:05,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:45:05,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:45:05,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:45:05,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:45:05,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:45:05,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:45:05,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:45:05,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:45:05,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:45:05,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:45:05,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:45:05,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:45:05,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:45:05,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:45:05,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:45:05,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:45:05,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:45:05,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:45:05,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:45:05,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:45:05,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:45:05,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:45:05,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:45:05,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 14:45:05,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 14:45:05,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 14:45:05,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 14:45:05,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 14:45:05,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 14:45:05,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:45:05,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:45:05,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:45:05,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:45:05,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:45:05,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:45:05,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:45:05,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:45:05,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:45:05,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:45:05,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:45:05,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-20 14:45:05,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:45:05,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:45:05,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:45:05,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:45:05,300 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:45:05,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:45:05,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:45:05,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:45:05,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:45:05,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:45:05,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:45:05,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:45:05,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:45:05,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:45:05,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:45:05,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:45:05,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:45:05,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:45:05,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:45:05,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:45:05,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:45:05,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:45:05,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:45:05,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:45:05,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:45:05,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:45:05,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:45:05,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:45:05,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:45:05,307 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:45:05,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:45:05,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:45:05,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:45:05,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:45:05,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:45:05,803 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:45:05,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-01-20 14:45:05,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71a9a832/85bbdd0635844dfc90f655ca00d960cb/FLAG0f5376bfd [2021-01-20 14:45:06,747 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:45:06,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-01-20 14:45:06,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71a9a832/85bbdd0635844dfc90f655ca00d960cb/FLAG0f5376bfd [2021-01-20 14:45:07,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a71a9a832/85bbdd0635844dfc90f655ca00d960cb [2021-01-20 14:45:07,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:45:07,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:45:07,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:45:07,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:45:07,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:45:07,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2834b8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07, skipping insertion in model container [2021-01-20 14:45:07,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:45:07,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:45:07,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:45:07,611 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:45:07,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:45:07,824 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:45:07,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07 WrapperNode [2021-01-20 14:45:07,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:45:07,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:45:07,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:45:07,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:45:07,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:45:07,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:45:07,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:45:07,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:45:07,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (1/1) ... [2021-01-20 14:45:07,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:45:07,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:45:07,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:45:07,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:45:07,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (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 [2021-01-20 14:45:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:45:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:45:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:45:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:45:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:45:07,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:45:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:45:07,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:45:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:45:07,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:45:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:45:07,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:45:07,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:45:07,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:45:07,988 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:45:08,476 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:45:08,476 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:45:08,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:45:08 BoogieIcfgContainer [2021-01-20 14:45:08,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:45:08,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:45:08,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:45:08,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:45:08,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:45:07" (1/3) ... [2021-01-20 14:45:08,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b082b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:45:08, skipping insertion in model container [2021-01-20 14:45:08,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:45:07" (2/3) ... [2021-01-20 14:45:08,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b082b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:45:08, skipping insertion in model container [2021-01-20 14:45:08,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:45:08" (3/3) ... [2021-01-20 14:45:08,487 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2021-01-20 14:45:08,501 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:45:08,502 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:45:08,505 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:45:08,506 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:45:08,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,533 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,533 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,536 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,536 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,537 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,537 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,538 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,539 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,539 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,540 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,540 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,541 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,543 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,544 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,544 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,550 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:45:08,555 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:45:08,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:45:08,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:45:08,590 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:45:08,590 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:45:08,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:45:08,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:45:08,591 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:45:08,591 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:45:08,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:45:08,603 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 14:45:09,376 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 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) [2021-01-20 14:45:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 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) [2021-01-20 14:45:09,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 14:45:09,451 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:45:09,452 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:45:09,453 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:45:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:45:09,460 INFO L82 PathProgramCache]: Analyzing trace with hash 31988960, now seen corresponding path program 1 times [2021-01-20 14:45:09,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:45:09,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853569287] [2021-01-20 14:45:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:45:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:45:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:45:09,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853569287] [2021-01-20 14:45:09,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:45:09,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:45:09,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962079563] [2021-01-20 14:45:09,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:45:09,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:45:09,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:45:09,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:45:10,022 INFO L87 Difference]: Start difference. First operand has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-01-20 14:45:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:45:10,490 INFO L93 Difference]: Finished difference Result 10464 states and 36160 transitions. [2021-01-20 14:45:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:45:10,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2021-01-20 14:45:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:45:10,566 INFO L225 Difference]: With dead ends: 10464 [2021-01-20 14:45:10,566 INFO L226 Difference]: Without dead ends: 3954 [2021-01-20 14:45:10,569 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:45:10,570 INFO L78 Accepts]: Start accepts. Automaton has 3954 states. Word has length 42 [2021-01-20 14:45:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:45:10,572 INFO L481 AbstractCegarLoop]: Abstraction has 3954 states. [2021-01-20 14:45:10,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-01-20 14:45:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states. [2021-01-20 14:45:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 14:45:10,594 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:45:10,595 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:45:10,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:45:10,597 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:45:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:45:10,604 INFO L82 PathProgramCache]: Analyzing trace with hash -95647071, now seen corresponding path program 1 times [2021-01-20 14:45:10,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:45:10,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27358922] [2021-01-20 14:45:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:45:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:45:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:45:10,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27358922] [2021-01-20 14:45:10,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:45:10,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:45:10,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471032275] [2021-01-20 14:45:10,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:45:10,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:45:10,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:45:10,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:45:10,911 INFO L87 Difference]: Start difference. First operand 3954 states. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:11,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:45:11,264 INFO L93 Difference]: Finished difference Result 4914 states and 16433 transitions. [2021-01-20 14:45:11,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:45:11,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-01-20 14:45:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:45:11,287 INFO L225 Difference]: With dead ends: 4914 [2021-01-20 14:45:11,287 INFO L226 Difference]: Without dead ends: 2464 [2021-01-20 14:45:11,288 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:45:11,288 INFO L78 Accepts]: Start accepts. Automaton has 2464 states. Word has length 44 [2021-01-20 14:45:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:45:11,289 INFO L481 AbstractCegarLoop]: Abstraction has 2464 states. [2021-01-20 14:45:11,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states. [2021-01-20 14:45:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:45:11,297 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:45:11,298 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:45:11,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:45:11,298 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:45:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:45:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1389736977, now seen corresponding path program 1 times [2021-01-20 14:45:11,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:45:11,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113823199] [2021-01-20 14:45:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:45:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:45:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:45:11,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113823199] [2021-01-20 14:45:11,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:45:11,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:45:11,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917842345] [2021-01-20 14:45:11,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:45:11,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:45:11,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:45:11,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:45:11,476 INFO L87 Difference]: Start difference. First operand 2464 states. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:45:11,730 INFO L93 Difference]: Finished difference Result 3464 states and 11256 transitions. [2021-01-20 14:45:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:45:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:45:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:45:11,746 INFO L225 Difference]: With dead ends: 3464 [2021-01-20 14:45:11,746 INFO L226 Difference]: Without dead ends: 1724 [2021-01-20 14:45:11,747 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:45:11,747 INFO L78 Accepts]: Start accepts. Automaton has 1724 states. Word has length 47 [2021-01-20 14:45:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:45:11,748 INFO L481 AbstractCegarLoop]: Abstraction has 1724 states. [2021-01-20 14:45:11,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states. [2021-01-20 14:45:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:45:11,754 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:45:11,754 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:45:11,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:45:11,755 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:45:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:45:11,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1496327244, now seen corresponding path program 1 times [2021-01-20 14:45:11,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:45:11,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039456355] [2021-01-20 14:45:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:45:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:45:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:45:11,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039456355] [2021-01-20 14:45:11,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:45:11,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:45:11,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478847910] [2021-01-20 14:45:11,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:45:11,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:45:11,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:45:11,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:45:11,975 INFO L87 Difference]: Start difference. First operand 1724 states. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:45:12,131 INFO L93 Difference]: Finished difference Result 2194 states and 6875 transitions. [2021-01-20 14:45:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:45:12,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:45:12,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:45:12,146 INFO L225 Difference]: With dead ends: 2194 [2021-01-20 14:45:12,146 INFO L226 Difference]: Without dead ends: 1618 [2021-01-20 14:45:12,146 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:45:12,146 INFO L78 Accepts]: Start accepts. Automaton has 1618 states. Word has length 49 [2021-01-20 14:45:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:45:12,147 INFO L481 AbstractCegarLoop]: Abstraction has 1618 states. [2021-01-20 14:45:12,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states. [2021-01-20 14:45:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:45:12,153 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:45:12,153 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:45:12,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:45:12,153 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:45:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:45:12,154 INFO L82 PathProgramCache]: Analyzing trace with hash 577338396, now seen corresponding path program 1 times [2021-01-20 14:45:12,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:45:12,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696585847] [2021-01-20 14:45:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:45:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:45:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:45:12,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696585847] [2021-01-20 14:45:12,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:45:12,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:45:12,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553682741] [2021-01-20 14:45:12,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:45:12,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:45:12,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:45:12,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:45:12,313 INFO L87 Difference]: Start difference. First operand 1618 states. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:12,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:45:12,537 INFO L93 Difference]: Finished difference Result 1777 states and 5456 transitions. [2021-01-20 14:45:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:45:12,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-20 14:45:12,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:45:12,548 INFO L225 Difference]: With dead ends: 1777 [2021-01-20 14:45:12,548 INFO L226 Difference]: Without dead ends: 1273 [2021-01-20 14:45:12,549 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:45:12,549 INFO L78 Accepts]: Start accepts. Automaton has 1273 states. Word has length 50 [2021-01-20 14:45:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:45:12,550 INFO L481 AbstractCegarLoop]: Abstraction has 1273 states. [2021-01-20 14:45:12,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states. [2021-01-20 14:45:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:45:12,554 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:45:12,554 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:45:12,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:45:12,555 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:45:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:45:12,555 INFO L82 PathProgramCache]: Analyzing trace with hash -270393692, now seen corresponding path program 1 times [2021-01-20 14:45:12,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:45:12,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202540557] [2021-01-20 14:45:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:45:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:45:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:45:12,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202540557] [2021-01-20 14:45:12,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:45:12,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:45:12,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925354012] [2021-01-20 14:45:12,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:45:12,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:45:12,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:45:12,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:45:12,707 INFO L87 Difference]: Start difference. First operand 1273 states. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:45:12,914 INFO L93 Difference]: Finished difference Result 1039 states and 3026 transitions. [2021-01-20 14:45:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:45:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-20 14:45:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:45:12,920 INFO L225 Difference]: With dead ends: 1039 [2021-01-20 14:45:12,920 INFO L226 Difference]: Without dead ends: 715 [2021-01-20 14:45:12,921 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:45:12,921 INFO L78 Accepts]: Start accepts. Automaton has 715 states. Word has length 51 [2021-01-20 14:45:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:45:12,922 INFO L481 AbstractCegarLoop]: Abstraction has 715 states. [2021-01-20 14:45:12,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states. [2021-01-20 14:45:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 14:45:12,925 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:45:12,925 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:45:12,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:45:12,926 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:45:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:45:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash 796083109, now seen corresponding path program 1 times [2021-01-20 14:45:12,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:45:12,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25111242] [2021-01-20 14:45:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:45:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:45:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:45:13,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25111242] [2021-01-20 14:45:13,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:45:13,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:45:13,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583196988] [2021-01-20 14:45:13,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:45:13,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:45:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:45:13,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:45:13,033 INFO L87 Difference]: Start difference. First operand 715 states. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:45:13,171 INFO L93 Difference]: Finished difference Result 607 states and 1685 transitions. [2021-01-20 14:45:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:45:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-01-20 14:45:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:45:13,172 INFO L225 Difference]: With dead ends: 607 [2021-01-20 14:45:13,172 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:45:13,172 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:45:13,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 53 [2021-01-20 14:45:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:45:13,173 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:45:13,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:45:13,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:45:13,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:45:13,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:45:13,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:45:13 BasicIcfg [2021-01-20 14:45:13,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:45:13,181 INFO L168 Benchmark]: Toolchain (without parser) took 6149.26 ms. Allocated memory was 302.0 MB in the beginning and 710.9 MB in the end (delta: 408.9 MB). Free memory was 275.5 MB in the beginning and 627.2 MB in the end (delta: -351.7 MB). Peak memory consumption was 61.2 MB. Max. memory is 16.0 GB. [2021-01-20 14:45:13,182 INFO L168 Benchmark]: CDTParser took 3.67 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:45:13,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.79 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 276.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.0 GB. [2021-01-20 14:45:13,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 274.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:45:13,184 INFO L168 Benchmark]: Boogie Preprocessor took 27.96 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 272.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:45:13,185 INFO L168 Benchmark]: RCFGBuilder took 575.73 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 249.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:45:13,186 INFO L168 Benchmark]: TraceAbstraction took 4698.73 ms. Allocated memory was 302.0 MB in the beginning and 710.9 MB in the end (delta: 408.9 MB). Free memory was 249.1 MB in the beginning and 627.2 MB in the end (delta: -378.1 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.0 GB. [2021-01-20 14:45:13,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.67 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 790.79 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 276.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.83 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 274.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.96 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 272.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 575.73 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 249.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4698.73 ms. Allocated memory was 302.0 MB in the beginning and 710.9 MB in the end (delta: 408.9 MB). Free memory was 249.1 MB in the beginning and 627.2 MB in the end (delta: -378.1 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 615 SDtfs, 943 SDslu, 1995 SDs, 0 SdLazy, 278 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8448occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 43243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...