/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-18 00:02:08,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-18 00:02:08,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-18 00:02:08,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-18 00:02:08,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-18 00:02:08,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-18 00:02:08,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-18 00:02:08,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-18 00:02:08,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-18 00:02:08,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-18 00:02:08,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-18 00:02:08,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-18 00:02:08,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-18 00:02:08,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-18 00:02:08,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-18 00:02:08,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-18 00:02:08,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-18 00:02:08,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-18 00:02:08,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-18 00:02:08,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-18 00:02:08,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-18 00:02:08,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-18 00:02:08,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-18 00:02:08,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-18 00:02:08,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-18 00:02:08,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-18 00:02:08,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-18 00:02:08,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-18 00:02:08,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-18 00:02:08,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-18 00:02:08,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-18 00:02:08,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-18 00:02:08,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-18 00:02:08,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-18 00:02:08,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-18 00:02:08,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-18 00:02:08,990 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-keepdead.epf [2020-12-18 00:02:09,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-18 00:02:09,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-18 00:02:09,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-18 00:02:09,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-18 00:02:09,047 INFO L138 SettingsManager]: * Use SBE=true [2020-12-18 00:02:09,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-18 00:02:09,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-18 00:02:09,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-18 00:02:09,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-18 00:02:09,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-18 00:02:09,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-18 00:02:09,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-18 00:02:09,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-18 00:02:09,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-18 00:02:09,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-18 00:02:09,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-18 00:02:09,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-18 00:02:09,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-18 00:02:09,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-18 00:02:09,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-18 00:02:09,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-18 00:02:09,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-18 00:02:09,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-18 00:02:09,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-18 00:02:09,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-18 00:02:09,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-18 00:02:09,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-18 00:02:09,054 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-18 00:02:09,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-18 00:02:09,054 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-18 00:02:09,054 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-18 00:02:09,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-18 00:02:09,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-18 00:02:09,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-18 00:02:09,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-18 00:02:09,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-18 00:02:09,542 INFO L275 PluginConnector]: CDTParser initialized [2020-12-18 00:02:09,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-12-18 00:02:09,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5223fda93/67f1aaf257454cb0be1b57dcf13b43e3/FLAGab0d027f9 [2020-12-18 00:02:10,438 INFO L306 CDTParser]: Found 1 translation units. [2020-12-18 00:02:10,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-12-18 00:02:10,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5223fda93/67f1aaf257454cb0be1b57dcf13b43e3/FLAGab0d027f9 [2020-12-18 00:02:10,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5223fda93/67f1aaf257454cb0be1b57dcf13b43e3 [2020-12-18 00:02:10,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-18 00:02:10,722 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-18 00:02:10,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-18 00:02:10,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-18 00:02:10,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-18 00:02:10,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:02:10" (1/1) ... [2020-12-18 00:02:10,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29798fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:10, skipping insertion in model container [2020-12-18 00:02:10,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:02:10" (1/1) ... [2020-12-18 00:02:10,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-18 00:02:10,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-18 00:02:11,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:02:11,166 INFO L203 MainTranslator]: Completed pre-run [2020-12-18 00:02:11,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:02:11,328 INFO L208 MainTranslator]: Completed translation [2020-12-18 00:02:11,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11 WrapperNode [2020-12-18 00:02:11,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-18 00:02:11,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-18 00:02:11,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-18 00:02:11,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-18 00:02:11,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-18 00:02:11,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-18 00:02:11,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-18 00:02:11,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-18 00:02:11,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... [2020-12-18 00:02:11,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-18 00:02:11,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-18 00:02:11,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-18 00:02:11,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-18 00:02:11,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-18 00:02:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-18 00:02:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-18 00:02:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-18 00:02:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-18 00:02:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-18 00:02:11,572 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-18 00:02:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-18 00:02:11,573 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-18 00:02:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-18 00:02:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-18 00:02:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-18 00:02:11,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-18 00:02:11,575 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-18 00:02:12,013 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-18 00:02:12,014 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-18 00:02:12,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:02:12 BoogieIcfgContainer [2020-12-18 00:02:12,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-18 00:02:12,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-18 00:02:12,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-18 00:02:12,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-18 00:02:12,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:02:10" (1/3) ... [2020-12-18 00:02:12,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d00b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:02:12, skipping insertion in model container [2020-12-18 00:02:12,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:11" (2/3) ... [2020-12-18 00:02:12,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d00b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:02:12, skipping insertion in model container [2020-12-18 00:02:12,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:02:12" (3/3) ... [2020-12-18 00:02:12,027 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.oepc.i [2020-12-18 00:02:12,048 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-18 00:02:12,048 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-18 00:02:12,053 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-18 00:02:12,054 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-18 00:02:12,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,086 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,086 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,087 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,087 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,090 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,090 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,094 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,095 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,095 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:02:12,107 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-18 00:02:12,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-18 00:02:12,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-18 00:02:12,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-18 00:02:12,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-18 00:02:12,149 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-18 00:02:12,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-18 00:02:12,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-18 00:02:12,149 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-18 00:02:12,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-18 00:02:12,162 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 64 transitions, 138 flow [2020-12-18 00:02:12,254 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1320 states, 1318 states have (on average 2.7511380880121394) internal successors, (3626), 1319 states have internal predecessors, (3626), 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) [2020-12-18 00:02:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 1320 states, 1318 states have (on average 2.7511380880121394) internal successors, (3626), 1319 states have internal predecessors, (3626), 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) [2020-12-18 00:02:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-18 00:02:12,297 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:02:12,298 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] [2020-12-18 00:02:12,299 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:02:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:02:12,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1850588041, now seen corresponding path program 1 times [2020-12-18 00:02:12,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:02:12,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917437283] [2020-12-18 00:02:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:02:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:02:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:02:12,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917437283] [2020-12-18 00:02:12,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:02:12,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-18 00:02:12,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110065549] [2020-12-18 00:02:12,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-18 00:02:12,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:02:12,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-18 00:02:12,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-18 00:02:12,775 INFO L87 Difference]: Start difference. First operand has 1320 states, 1318 states have (on average 2.7511380880121394) internal successors, (3626), 1319 states have internal predecessors, (3626), 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 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2020-12-18 00:02:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:02:12,981 INFO L93 Difference]: Finished difference Result 1714 states and 4478 transitions. [2020-12-18 00:02:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-18 00:02:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2020-12-18 00:02:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:02:12,986 INFO L763 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 [2020-12-18 00:02:12,986 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 4478 transitions. Word has length 36 [2020-12-18 00:02:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:02:12,988 INFO L481 AbstractCegarLoop]: Abstraction has 1714 states and 4478 transitions. [2020-12-18 00:02:12,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2020-12-18 00:02:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 4478 transitions. [2020-12-18 00:02:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-18 00:02:12,995 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:02:12,996 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] [2020-12-18 00:02:12,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-18 00:02:12,996 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:02:12,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:02:12,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1562684454, now seen corresponding path program 1 times [2020-12-18 00:02:12,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:02:12,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517545713] [2020-12-18 00:02:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:02:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:02:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:02:13,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517545713] [2020-12-18 00:02:13,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:02:13,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-18 00:02:13,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180775889] [2020-12-18 00:02:13,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-18 00:02:13,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:02:13,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-18 00:02:13,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-18 00:02:13,168 INFO L87 Difference]: Start difference. First operand 1714 states and 4478 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2020-12-18 00:02:13,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:02:13,330 INFO L93 Difference]: Finished difference Result 1115 states and 2789 transitions. [2020-12-18 00:02:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-18 00:02:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2020-12-18 00:02:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:02:13,332 INFO L763 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 [2020-12-18 00:02:13,333 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2789 transitions. Word has length 38 [2020-12-18 00:02:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:02:13,333 INFO L481 AbstractCegarLoop]: Abstraction has 1115 states and 2789 transitions. [2020-12-18 00:02:13,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2020-12-18 00:02:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2789 transitions. [2020-12-18 00:02:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-18 00:02:13,337 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:02:13,337 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] [2020-12-18 00:02:13,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-18 00:02:13,338 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:02:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:02:13,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1629268999, now seen corresponding path program 1 times [2020-12-18 00:02:13,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:02:13,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297568203] [2020-12-18 00:02:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:02:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:02:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:02:13,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297568203] [2020-12-18 00:02:13,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:02:13,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-18 00:02:13,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362617077] [2020-12-18 00:02:13,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-18 00:02:13,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:02:13,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-18 00:02:13,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-18 00:02:13,462 INFO L87 Difference]: Start difference. First operand 1115 states and 2789 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:02:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:02:13,622 INFO L93 Difference]: Finished difference Result 1927 states and 4735 transitions. [2020-12-18 00:02:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-18 00:02:13,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2020-12-18 00:02:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:02:13,624 INFO L763 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 [2020-12-18 00:02:13,624 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 4735 transitions. Word has length 40 [2020-12-18 00:02:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:02:13,625 INFO L481 AbstractCegarLoop]: Abstraction has 1927 states and 4735 transitions. [2020-12-18 00:02:13,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:02:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 4735 transitions. [2020-12-18 00:02:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-18 00:02:13,630 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:02:13,630 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] [2020-12-18 00:02:13,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-18 00:02:13,630 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:02:13,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:02:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash 252127285, now seen corresponding path program 1 times [2020-12-18 00:02:13,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:02:13,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259239286] [2020-12-18 00:02:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:02:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:02:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:02:13,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259239286] [2020-12-18 00:02:13,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:02:13,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:02:13,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260090773] [2020-12-18 00:02:13,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:02:13,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:02:13,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:02:13,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:02:13,765 INFO L87 Difference]: Start difference. First operand 1927 states and 4735 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:02:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:02:14,031 INFO L93 Difference]: Finished difference Result 1144 states and 2710 transitions. [2020-12-18 00:02:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-18 00:02:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2020-12-18 00:02:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:02:14,032 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-18 00:02:14,033 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 2710 transitions. Word has length 40 [2020-12-18 00:02:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:02:14,033 INFO L481 AbstractCegarLoop]: Abstraction has 1144 states and 2710 transitions. [2020-12-18 00:02:14,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:02:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 2710 transitions. [2020-12-18 00:02:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-18 00:02:14,037 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:02:14,038 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] [2020-12-18 00:02:14,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-18 00:02:14,038 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:02:14,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:02:14,039 INFO L82 PathProgramCache]: Analyzing trace with hash -163535177, now seen corresponding path program 1 times [2020-12-18 00:02:14,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:02:14,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704272422] [2020-12-18 00:02:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:02:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:02:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:02:14,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704272422] [2020-12-18 00:02:14,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:02:14,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-18 00:02:14,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140102831] [2020-12-18 00:02:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-18 00:02:14,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:02:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-18 00:02:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-18 00:02:14,199 INFO L87 Difference]: Start difference. First operand 1144 states and 2710 transitions. 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) [2020-12-18 00:02:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:02:14,327 INFO L93 Difference]: Finished difference Result 1500 states and 3539 transitions. [2020-12-18 00:02:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-18 00:02:14,328 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 [2020-12-18 00:02:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:02:14,329 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:02:14,329 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 3539 transitions. Word has length 44 [2020-12-18 00:02:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:02:14,330 INFO L481 AbstractCegarLoop]: Abstraction has 1500 states and 3539 transitions. [2020-12-18 00:02:14,331 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) [2020-12-18 00:02:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 3539 transitions. [2020-12-18 00:02:14,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-18 00:02:14,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-18 00:02:14,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 12:02:14 BasicIcfg [2020-12-18 00:02:14,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-18 00:02:14,346 INFO L168 Benchmark]: Toolchain (without parser) took 3621.16 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 277.3 MB in the beginning and 283.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.0 GB. [2020-12-18 00:02:14,347 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:02:14,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.08 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.7 MB in the end (delta: 30.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-12-18 00:02:14,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.56 ms. Allocated memory is still 302.0 MB. Free memory was 246.7 MB in the beginning and 244.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-18 00:02:14,354 INFO L168 Benchmark]: Boogie Preprocessor took 33.47 ms. Allocated memory is still 302.0 MB. Free memory was 244.8 MB in the beginning and 243.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:02:14,355 INFO L168 Benchmark]: RCFGBuilder took 593.55 ms. Allocated memory is still 302.0 MB. Free memory was 243.4 MB in the beginning and 264.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2020-12-18 00:02:14,356 INFO L168 Benchmark]: TraceAbstraction took 2323.48 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 263.5 MB in the beginning and 283.7 MB in the end (delta: -20.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.0 GB. [2020-12-18 00:02:14,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 607.08 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 246.7 MB in the end (delta: 30.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.56 ms. Allocated memory is still 302.0 MB. Free memory was 246.7 MB in the beginning and 244.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.47 ms. Allocated memory is still 302.0 MB. Free memory was 244.8 MB in the beginning and 243.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 593.55 ms. Allocated memory is still 302.0 MB. Free memory was 243.4 MB in the beginning and 264.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2323.48 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 263.5 MB in the beginning and 283.7 MB in the end (delta: -20.2 MB). Peak memory consumption was 43.7 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 3 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 415 SDtfs, 604 SDslu, 1432 SDs, 0 SdLazy, 166 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1927occurred in iteration=3, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 19259 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...