/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/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:43:21,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:43:21,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:43:21,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:43:21,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:43:21,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:43:21,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:43:21,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:43:21,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:43:21,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:43:21,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:43:21,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:43:21,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:43:21,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:43:21,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:43:21,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:43:21,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:43:21,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:43:21,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:43:21,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:43:21,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:43:22,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:43:22,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:43:22,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:43:22,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:43:22,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:43:22,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:43:22,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:43:22,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:43:22,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:43:22,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:43:22,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:43:22,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:43:22,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:43:22,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:43:22,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:43:22,035 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 14:43:22,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:43:22,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:43:22,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:43:22,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:43:22,101 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:43:22,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:43:22,101 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:43:22,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:43:22,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:43:22,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:43:22,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:43:22,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:43:22,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:43:22,104 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:43:22,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:43:22,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:43:22,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:43:22,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:43:22,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:43:22,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:43:22,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:43:22,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:43:22,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:43:22,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:43:22,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:43:22,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:43:22,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:43:22,108 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:43:22,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:43:22,108 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:43:22,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:43:22,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:43:22,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:43:22,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:43:22,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:43:22,566 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:43:22,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-01-20 14:43:22,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0992c1e/5c019532c1fc4c01a8bda25962f7ed75/FLAGf8de9cce0 [2021-01-20 14:43:23,486 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:43:23,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-01-20 14:43:23,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0992c1e/5c019532c1fc4c01a8bda25962f7ed75/FLAGf8de9cce0 [2021-01-20 14:43:23,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf0992c1e/5c019532c1fc4c01a8bda25962f7ed75 [2021-01-20 14:43:23,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:43:23,717 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:43:23,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:23,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:43:23,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:43:23,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:23" (1/1) ... [2021-01-20 14:43:23,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454751e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:23, skipping insertion in model container [2021-01-20 14:43:23,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:43:23" (1/1) ... [2021-01-20 14:43:23,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:43:23,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:43:24,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:24,359 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:43:24,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:43:24,595 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:43:24,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24 WrapperNode [2021-01-20 14:43:24,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:43:24,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:24,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:43:24,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:43:24,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:43:24,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:43:24,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:43:24,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:43:24,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... [2021-01-20 14:43:24,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:43:24,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:43:24,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:43:24,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:43:24,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:43:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:43:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:43:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:43:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:43:24,777 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:43:24,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:43:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:43:24,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:43:24,778 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:43:24,778 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:43:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:43:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:43:24,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:43:24,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:43:24,781 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 14:43:25,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:43:25,317 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:43:25,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:25 BoogieIcfgContainer [2021-01-20 14:43:25,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:43:25,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:43:25,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:43:25,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:43:25,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:43:23" (1/3) ... [2021-01-20 14:43:25,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aea4b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:25, skipping insertion in model container [2021-01-20 14:43:25,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:43:24" (2/3) ... [2021-01-20 14:43:25,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aea4b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:43:25, skipping insertion in model container [2021-01-20 14:43:25,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:43:25" (3/3) ... [2021-01-20 14:43:25,328 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2021-01-20 14:43:25,343 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:43:25,344 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:43:25,348 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:43:25,349 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:43:25,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,386 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,386 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,393 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,393 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,394 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,394 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,395 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,405 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:43:25,415 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:43:25,430 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:43:25,454 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:43:25,454 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:43:25,455 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:43:25,455 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:43:25,455 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:43:25,455 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:43:25,455 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:43:25,456 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:43:25,469 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 14:43:26,303 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 14:43:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 14:43:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 14:43:26,396 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:26,397 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 14:43:26,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1557079206, now seen corresponding path program 1 times [2021-01-20 14:43:26,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:26,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982039293] [2021-01-20 14:43:26,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:27,002 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 14:43:27,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982039293] [2021-01-20 14:43:27,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:27,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:27,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821439697] [2021-01-20 14:43:27,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:27,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:27,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:27,050 INFO L87 Difference]: Start difference. First operand has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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 14:43:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:27,690 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2021-01-20 14:43:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:27,693 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 14:43:27,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:27,759 INFO L225 Difference]: With dead ends: 12200 [2021-01-20 14:43:27,760 INFO L226 Difference]: Without dead ends: 4605 [2021-01-20 14:43:27,762 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:27,762 INFO L78 Accepts]: Start accepts. Automaton has 4605 states. Word has length 42 [2021-01-20 14:43:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:27,764 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states. [2021-01-20 14:43:27,764 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 14:43:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states. [2021-01-20 14:43:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 14:43:27,781 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:27,782 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 14:43:27,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:43:27,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:27,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1581474041, now seen corresponding path program 1 times [2021-01-20 14:43:27,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:27,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307285666] [2021-01-20 14:43:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:28,143 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2021-01-20 14:43:28,328 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 14:43:28,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307285666] [2021-01-20 14:43:28,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:28,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:28,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106483686] [2021-01-20 14:43:28,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:28,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:28,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:28,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:28,368 INFO L87 Difference]: Start difference. First operand 4605 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 14:43:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:28,722 INFO L93 Difference]: Finished difference Result 5725 states and 19295 transitions. [2021-01-20 14:43:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:43:28,723 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 14:43:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:28,749 INFO L225 Difference]: With dead ends: 5725 [2021-01-20 14:43:28,749 INFO L226 Difference]: Without dead ends: 2870 [2021-01-20 14:43:28,750 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:43:28,750 INFO L78 Accepts]: Start accepts. Automaton has 2870 states. Word has length 44 [2021-01-20 14:43:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:28,751 INFO L481 AbstractCegarLoop]: Abstraction has 2870 states. [2021-01-20 14:43:28,751 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 14:43:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states. [2021-01-20 14:43:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:43:28,760 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:28,760 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 14:43:28,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:43:28,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 674177462, now seen corresponding path program 1 times [2021-01-20 14:43:28,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:28,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845937812] [2021-01-20 14:43:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:28,974 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 14:43:28,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845937812] [2021-01-20 14:43:28,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:28,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:28,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234471555] [2021-01-20 14:43:28,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:28,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:28,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:28,979 INFO L87 Difference]: Start difference. First operand 2870 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:29,250 INFO L93 Difference]: Finished difference Result 3110 states and 10154 transitions. [2021-01-20 14:43:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:29,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:43:29,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:29,272 INFO L225 Difference]: With dead ends: 3110 [2021-01-20 14:43:29,272 INFO L226 Difference]: Without dead ends: 2550 [2021-01-20 14:43:29,273 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:29,273 INFO L78 Accepts]: Start accepts. Automaton has 2550 states. Word has length 47 [2021-01-20 14:43:29,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:29,274 INFO L481 AbstractCegarLoop]: Abstraction has 2550 states. [2021-01-20 14:43:29,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states. [2021-01-20 14:43:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:43:29,283 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:29,283 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 14:43:29,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:43:29,284 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1902429865, now seen corresponding path program 1 times [2021-01-20 14:43:29,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:29,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427098733] [2021-01-20 14:43:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:43:29,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427098733] [2021-01-20 14:43:29,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:29,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:29,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583393547] [2021-01-20 14:43:29,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:29,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:29,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:29,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:29,437 INFO L87 Difference]: Start difference. First operand 2550 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:29,907 INFO L93 Difference]: Finished difference Result 4240 states and 13798 transitions. [2021-01-20 14:43:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 14:43:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:43:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:29,932 INFO L225 Difference]: With dead ends: 4240 [2021-01-20 14:43:29,932 INFO L226 Difference]: Without dead ends: 2390 [2021-01-20 14:43:29,933 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-01-20 14:43:29,933 INFO L78 Accepts]: Start accepts. Automaton has 2390 states. Word has length 49 [2021-01-20 14:43:29,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:29,934 INFO L481 AbstractCegarLoop]: Abstraction has 2390 states. [2021-01-20 14:43:29,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states. [2021-01-20 14:43:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 14:43:29,942 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:29,943 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 14:43:29,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:43:29,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1518373285, now seen corresponding path program 1 times [2021-01-20 14:43:29,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:29,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684484195] [2021-01-20 14:43:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:30,135 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 14:43:30,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684484195] [2021-01-20 14:43:30,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:30,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:43:30,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437573603] [2021-01-20 14:43:30,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:43:30,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:30,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:43:30,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:43:30,138 INFO L87 Difference]: Start difference. First operand 2390 states. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 14:43:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:30,326 INFO L93 Difference]: Finished difference Result 3126 states and 10044 transitions. [2021-01-20 14:43:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:43:30,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 14:43:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:30,363 INFO L225 Difference]: With dead ends: 3126 [2021-01-20 14:43:30,363 INFO L226 Difference]: Without dead ends: 2174 [2021-01-20 14:43:30,364 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 14:43:30,366 INFO L78 Accepts]: Start accepts. Automaton has 2174 states. Word has length 50 [2021-01-20 14:43:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:30,369 INFO L481 AbstractCegarLoop]: Abstraction has 2174 states. [2021-01-20 14:43:30,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 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 14:43:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states. [2021-01-20 14:43:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:43:30,381 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:30,381 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 14:43:30,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:43:30,386 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:30,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1388621878, now seen corresponding path program 1 times [2021-01-20 14:43:30,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:30,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214173109] [2021-01-20 14:43:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:30,584 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 14:43:30,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214173109] [2021-01-20 14:43:30,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:30,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:30,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486655237] [2021-01-20 14:43:30,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:30,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:30,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:30,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:30,587 INFO L87 Difference]: Start difference. First operand 2174 states. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 14:43:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:30,867 INFO L93 Difference]: Finished difference Result 2396 states and 7505 transitions. [2021-01-20 14:43:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:43:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 14:43:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:30,875 INFO L225 Difference]: With dead ends: 2396 [2021-01-20 14:43:30,875 INFO L226 Difference]: Without dead ends: 1604 [2021-01-20 14:43:30,876 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 14:43:30,876 INFO L78 Accepts]: Start accepts. Automaton has 1604 states. Word has length 51 [2021-01-20 14:43:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:30,877 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states. [2021-01-20 14:43:30,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 14:43:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states. [2021-01-20 14:43:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 14:43:30,883 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:30,883 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] [2021-01-20 14:43:30,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:43:30,883 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1603073441, now seen corresponding path program 1 times [2021-01-20 14:43:30,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:30,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687131861] [2021-01-20 14:43:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:31,058 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 14:43:31,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687131861] [2021-01-20 14:43:31,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:31,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:43:31,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144179969] [2021-01-20 14:43:31,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:43:31,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:31,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:43:31,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:43:31,062 INFO L87 Difference]: Start difference. First operand 1604 states. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:31,282 INFO L93 Difference]: Finished difference Result 1343 states and 3992 transitions. [2021-01-20 14:43:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:43:31,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-01-20 14:43:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:31,287 INFO L225 Difference]: With dead ends: 1343 [2021-01-20 14:43:31,287 INFO L226 Difference]: Without dead ends: 911 [2021-01-20 14:43:31,288 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 14:43:31,288 INFO L78 Accepts]: Start accepts. Automaton has 911 states. Word has length 52 [2021-01-20 14:43:31,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:31,289 INFO L481 AbstractCegarLoop]: Abstraction has 911 states. [2021-01-20 14:43:31,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states. [2021-01-20 14:43:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:43:31,293 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:31,293 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, 1] [2021-01-20 14:43:31,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:43:31,294 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:31,294 INFO L82 PathProgramCache]: Analyzing trace with hash -986251264, now seen corresponding path program 1 times [2021-01-20 14:43:31,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:31,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290980436] [2021-01-20 14:43:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:31,451 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 14:43:31,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290980436] [2021-01-20 14:43:31,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:31,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:31,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302334407] [2021-01-20 14:43:31,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:31,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:31,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:31,455 INFO L87 Difference]: Start difference. First operand 911 states. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:31,588 INFO L93 Difference]: Finished difference Result 1282 states and 3696 transitions. [2021-01-20 14:43:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:43:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-20 14:43:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:31,592 INFO L225 Difference]: With dead ends: 1282 [2021-01-20 14:43:31,592 INFO L226 Difference]: Without dead ends: 719 [2021-01-20 14:43:31,592 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:31,593 INFO L78 Accepts]: Start accepts. Automaton has 719 states. Word has length 54 [2021-01-20 14:43:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:31,594 INFO L481 AbstractCegarLoop]: Abstraction has 719 states. [2021-01-20 14:43:31,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states. [2021-01-20 14:43:31,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 14:43:31,598 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:43:31,599 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, 1] [2021-01-20 14:43:31,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:43:31,599 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:43:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:43:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1457594808, now seen corresponding path program 2 times [2021-01-20 14:43:31,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:43:31,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299304508] [2021-01-20 14:43:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:43:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:43:31,760 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 14:43:31,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299304508] [2021-01-20 14:43:31,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:43:31,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:43:31,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727591044] [2021-01-20 14:43:31,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:43:31,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:43:31,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:43:31,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:43:31,764 INFO L87 Difference]: Start difference. First operand 719 states. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:43:31,861 INFO L93 Difference]: Finished difference Result 611 states and 1715 transitions. [2021-01-20 14:43:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:43:31,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-01-20 14:43:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:43:31,863 INFO L225 Difference]: With dead ends: 611 [2021-01-20 14:43:31,863 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:43:31,863 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:43:31,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 54 [2021-01-20 14:43:31,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:43:31,864 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:43:31,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:43:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:43:31,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:43:31,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 14:43:31,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:43:31 BasicIcfg [2021-01-20 14:43:31,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:43:31,877 INFO L168 Benchmark]: Toolchain (without parser) took 8159.64 ms. Allocated memory was 304.1 MB in the beginning and 692.1 MB in the end (delta: 388.0 MB). Free memory was 278.7 MB in the beginning and 569.1 MB in the end (delta: -290.4 MB). Peak memory consumption was 100.7 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:31,878 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 304.1 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:43:31,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 876.02 ms. Allocated memory is still 304.1 MB. Free memory was 278.4 MB in the beginning and 278.9 MB in the end (delta: -486.1 kB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:31,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.62 ms. Allocated memory is still 304.1 MB. Free memory was 278.9 MB in the beginning and 276.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:31,881 INFO L168 Benchmark]: Boogie Preprocessor took 42.84 ms. Allocated memory is still 304.1 MB. Free memory was 276.8 MB in the beginning and 275.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:31,886 INFO L168 Benchmark]: RCFGBuilder took 625.15 ms. Allocated memory is still 304.1 MB. Free memory was 275.8 MB in the beginning and 252.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:31,887 INFO L168 Benchmark]: TraceAbstraction took 6553.76 ms. Allocated memory was 304.1 MB in the beginning and 692.1 MB in the end (delta: 388.0 MB). Free memory was 251.7 MB in the beginning and 569.1 MB in the end (delta: -317.4 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:43:31,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 304.1 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 876.02 ms. Allocated memory is still 304.1 MB. Free memory was 278.4 MB in the beginning and 278.9 MB in the end (delta: -486.1 kB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.62 ms. Allocated memory is still 304.1 MB. Free memory was 278.9 MB in the beginning and 276.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 42.84 ms. Allocated memory is still 304.1 MB. Free memory was 276.8 MB in the beginning and 275.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 625.15 ms. Allocated memory is still 304.1 MB. Free memory was 275.8 MB in the beginning and 252.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6553.76 ms. Allocated memory was 304.1 MB in the beginning and 692.1 MB in the end (delta: 388.0 MB). Free memory was 251.7 MB in the beginning and 569.1 MB in the end (delta: -317.4 MB). Peak memory consumption was 74.8 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 846 SDtfs, 1226 SDslu, 2860 SDs, 0 SdLazy, 366 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 443 NumberOfCodeBlocks, 443 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 56424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...