/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:21:17,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:21:17,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:21:17,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:21:17,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:21:17,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:21:17,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:21:17,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:21:17,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:21:17,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:21:17,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:21:17,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:21:17,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:21:17,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:21:17,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:21:17,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:21:17,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:21:17,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:21:17,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:21:17,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:21:17,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:21:17,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:21:17,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:21:17,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:21:17,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:21:17,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:21:17,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:21:17,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:21:17,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:21:17,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:21:17,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:21:17,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:21:17,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:21:17,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:21:17,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:21:17,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:21:17,390 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 [2021-01-20 21:21:17,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:21:17,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:21:17,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:21:17,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:21:17,445 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:21:17,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:21:17,445 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:21:17,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:21:17,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:21:17,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:21:17,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:21:17,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:21:17,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:21:17,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:21:17,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:21:17,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:21:17,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:21:17,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:21:17,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:21:17,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:21:17,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:21:17,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:21:17,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:21:17,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:21:17,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:21:17,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:21:17,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:21:17,450 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:21:17,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:21:17,450 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:21:17,450 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:21:17,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:21:17,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:21:17,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:21:17,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:21:17,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:21:17,888 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:21:17,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-01-20 21:21:17,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbacea1b3/da93f58ac61449b29ad346048426864a/FLAGc89c3f0a6 [2021-01-20 21:21:18,789 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:21:18,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2021-01-20 21:21:18,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbacea1b3/da93f58ac61449b29ad346048426864a/FLAGc89c3f0a6 [2021-01-20 21:21:19,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbacea1b3/da93f58ac61449b29ad346048426864a [2021-01-20 21:21:19,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:21:19,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:21:19,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:21:19,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:21:19,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:21:19,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a74788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19, skipping insertion in model container [2021-01-20 21:21:19,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:21:19,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:21:19,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:21:19,475 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:21:19,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:21:19,682 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:21:19,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19 WrapperNode [2021-01-20 21:21:19,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:21:19,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:21:19,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:21:19,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:21:19,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:21:19,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:21:19,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:21:19,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:21:19,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... [2021-01-20 21:21:19,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:21:19,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:21:19,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:21:19,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:21:19,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:21:19,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:21:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:21:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:21:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:21:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:21:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:21:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:21:19,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:21:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:21:19,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:21:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:21:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:21:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:21:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:21:19,919 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 21:21:20,334 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:21:20,335 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:21:20,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:21:20 BoogieIcfgContainer [2021-01-20 21:21:20,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:21:20,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:21:20,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:21:20,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:21:20,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:21:19" (1/3) ... [2021-01-20 21:21:20,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6655c653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:21:20, skipping insertion in model container [2021-01-20 21:21:20,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:21:19" (2/3) ... [2021-01-20 21:21:20,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6655c653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:21:20, skipping insertion in model container [2021-01-20 21:21:20,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:21:20" (3/3) ... [2021-01-20 21:21:20,346 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2021-01-20 21:21:20,363 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:21:20,363 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:21:20,366 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:21:20,367 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:21:20,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,403 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,405 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,405 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,406 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,408 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,409 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,411 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,411 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,412 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,412 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,412 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,422 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,422 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,433 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,434 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,440 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:21:20,442 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:21:20,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:21:20,482 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:21:20,483 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:21:20,483 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:21:20,483 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:21:20,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:21:20,483 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:21:20,484 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:21:20,484 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:21:20,497 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2021-01-20 21:21:21,400 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 21:21:21,456 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 21:21:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-20 21:21:21,518 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:21,520 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 21:21:21,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1953454049, now seen corresponding path program 1 times [2021-01-20 21:21:21,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:21,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910102394] [2021-01-20 21:21:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:22,122 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 21:21:22,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910102394] [2021-01-20 21:21:22,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:22,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:21:22,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914856151] [2021-01-20 21:21:22,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:21:22,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:22,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:21:22,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:21:22,171 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 21:21:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:22,589 INFO L93 Difference]: Finished difference Result 11318 states and 39237 transitions. [2021-01-20 21:21:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:21:22,591 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 21:21:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:22,594 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 21:21:22,594 INFO L78 Accepts]: Start accepts. Automaton has 11318 states and 39237 transitions. Word has length 42 [2021-01-20 21:21:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:22,596 INFO L481 AbstractCegarLoop]: Abstraction has 11318 states and 39237 transitions. [2021-01-20 21:21:22,596 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 21:21:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 11318 states and 39237 transitions. [2021-01-20 21:21:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:21:22,619 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:22,619 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] [2021-01-20 21:21:22,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:21:22,620 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1558378250, now seen corresponding path program 1 times [2021-01-20 21:21:22,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:22,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035521402] [2021-01-20 21:21:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:22,851 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 21:21:22,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035521402] [2021-01-20 21:21:22,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:22,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:21:22,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650039003] [2021-01-20 21:21:22,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:21:22,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:22,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:21:22,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:21:22,856 INFO L87 Difference]: Start difference. First operand 11318 states and 39237 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 21:21:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:23,472 INFO L93 Difference]: Finished difference Result 24844 states and 85004 transitions. [2021-01-20 21:21:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:21:23,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 45 [2021-01-20 21:21:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:23,475 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:21:23,475 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 85004 transitions. Word has length 45 [2021-01-20 21:21:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:23,476 INFO L481 AbstractCegarLoop]: Abstraction has 24844 states and 85004 transitions. [2021-01-20 21:21:23,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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 21:21:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 85004 transitions. [2021-01-20 21:21:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:21:23,649 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:23,652 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 21:21:23,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:21:23,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:23,654 INFO L82 PathProgramCache]: Analyzing trace with hash -529352823, now seen corresponding path program 1 times [2021-01-20 21:21:23,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:23,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029314875] [2021-01-20 21:21:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:23,880 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 21:21:23,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029314875] [2021-01-20 21:21:23,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:23,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:21:23,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58956664] [2021-01-20 21:21:23,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:21:23,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:23,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:21:23,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:21:23,888 INFO L87 Difference]: Start difference. First operand 24844 states and 85004 transitions. 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 21:21:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:24,520 INFO L93 Difference]: Finished difference Result 38824 states and 131908 transitions. [2021-01-20 21:21:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:21:24,521 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 21:21:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:24,523 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:21:24,523 INFO L78 Accepts]: Start accepts. Automaton has 38824 states and 131908 transitions. Word has length 47 [2021-01-20 21:21:24,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:24,523 INFO L481 AbstractCegarLoop]: Abstraction has 38824 states and 131908 transitions. [2021-01-20 21:21:24,524 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 21:21:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 38824 states and 131908 transitions. [2021-01-20 21:21:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:21:24,601 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:24,602 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 21:21:24,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:21:24,602 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:24,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1641571734, now seen corresponding path program 1 times [2021-01-20 21:21:24,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:24,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809262088] [2021-01-20 21:21:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:24,871 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2021-01-20 21:21:24,910 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 21:21:24,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809262088] [2021-01-20 21:21:24,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:24,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:21:24,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566662558] [2021-01-20 21:21:24,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:21:24,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:24,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:21:24,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:21:24,913 INFO L87 Difference]: Start difference. First operand 38824 states and 131908 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:21:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:25,592 INFO L93 Difference]: Finished difference Result 57184 states and 192226 transitions. [2021-01-20 21:21:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:21:25,593 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 21:21:25,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:25,594 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:21:25,594 INFO L78 Accepts]: Start accepts. Automaton has 57184 states and 192226 transitions. Word has length 49 [2021-01-20 21:21:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:25,595 INFO L481 AbstractCegarLoop]: Abstraction has 57184 states and 192226 transitions. [2021-01-20 21:21:25,595 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 21:21:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 57184 states and 192226 transitions. [2021-01-20 21:21:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:21:25,867 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:25,868 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 21:21:25,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:21:25,868 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:25,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1854967778, now seen corresponding path program 1 times [2021-01-20 21:21:25,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:25,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414001766] [2021-01-20 21:21:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:26,026 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 21:21:26,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414001766] [2021-01-20 21:21:26,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:26,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:21:26,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006029184] [2021-01-20 21:21:26,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:21:26,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:26,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:21:26,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:21:26,029 INFO L87 Difference]: Start difference. First operand 57184 states and 192226 transitions. 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 21:21:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:26,431 INFO L93 Difference]: Finished difference Result 41038 states and 134634 transitions. [2021-01-20 21:21:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:21:26,434 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 21:21:26,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:26,435 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 21:21:26,435 INFO L78 Accepts]: Start accepts. Automaton has 41038 states and 134634 transitions. Word has length 50 [2021-01-20 21:21:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:26,436 INFO L481 AbstractCegarLoop]: Abstraction has 41038 states and 134634 transitions. [2021-01-20 21:21:26,436 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 21:21:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 41038 states and 134634 transitions. [2021-01-20 21:21:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 21:21:26,482 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:26,482 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 21:21:26,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:21:26,482 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:26,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:26,483 INFO L82 PathProgramCache]: Analyzing trace with hash -250295335, now seen corresponding path program 1 times [2021-01-20 21:21:26,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:26,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547601467] [2021-01-20 21:21:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:26,793 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 21:21:26,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547601467] [2021-01-20 21:21:26,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:26,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:21:26,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334173155] [2021-01-20 21:21:26,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:21:26,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:21:26,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:21:26,796 INFO L87 Difference]: Start difference. First operand 41038 states and 134634 transitions. 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 21:21:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:27,243 INFO L93 Difference]: Finished difference Result 22318 states and 71109 transitions. [2021-01-20 21:21:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:21:27,244 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 21:21:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:27,245 INFO L769 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 [2021-01-20 21:21:27,245 INFO L78 Accepts]: Start accepts. Automaton has 22318 states and 71109 transitions. Word has length 51 [2021-01-20 21:21:27,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:27,246 INFO L481 AbstractCegarLoop]: Abstraction has 22318 states and 71109 transitions. [2021-01-20 21:21:27,246 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 21:21:27,246 INFO L276 IsEmpty]: Start isEmpty. Operand 22318 states and 71109 transitions. [2021-01-20 21:21:27,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-20 21:21:27,279 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:27,279 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 21:21:27,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:21:27,280 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:27,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1821297602, now seen corresponding path program 1 times [2021-01-20 21:21:27,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:27,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165637569] [2021-01-20 21:21:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:27,465 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 21:21:27,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165637569] [2021-01-20 21:21:27,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:27,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:21:27,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841696502] [2021-01-20 21:21:27,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:21:27,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:27,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:21:27,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:21:27,469 INFO L87 Difference]: Start difference. First operand 22318 states and 71109 transitions. 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 21:21:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:27,961 INFO L93 Difference]: Finished difference Result 13228 states and 42024 transitions. [2021-01-20 21:21:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:21:27,962 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 21:21:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:27,963 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:21:27,963 INFO L78 Accepts]: Start accepts. Automaton has 13228 states and 42024 transitions. Word has length 52 [2021-01-20 21:21:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:27,964 INFO L481 AbstractCegarLoop]: Abstraction has 13228 states and 42024 transitions. [2021-01-20 21:21:27,965 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 21:21:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 13228 states and 42024 transitions. [2021-01-20 21:21:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-20 21:21:27,993 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:21:27,993 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 21:21:27,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:21:27,994 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:21:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:21:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2028376861, now seen corresponding path program 1 times [2021-01-20 21:21:27,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:21:27,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568719169] [2021-01-20 21:21:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:21:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:21:28,155 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 21:21:28,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568719169] [2021-01-20 21:21:28,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:21:28,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:21:28,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572557728] [2021-01-20 21:21:28,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:21:28,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:21:28,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:21:28,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:21:28,158 INFO L87 Difference]: Start difference. First operand 13228 states and 42024 transitions. 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 21:21:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:21:28,462 INFO L93 Difference]: Finished difference Result 19635 states and 61875 transitions. [2021-01-20 21:21:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 21:21:28,463 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 21:21:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:21:28,464 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 21:21:28,464 INFO L78 Accepts]: Start accepts. Automaton has 19635 states and 61875 transitions. Word has length 54 [2021-01-20 21:21:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:21:28,465 INFO L481 AbstractCegarLoop]: Abstraction has 19635 states and 61875 transitions. [2021-01-20 21:21:28,465 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 21:21:28,465 INFO L276 IsEmpty]: Start isEmpty. Operand 19635 states and 61875 transitions. [2021-01-20 21:21:28,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:21:28,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:21:28,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:21:28 BasicIcfg [2021-01-20 21:21:28,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:21:28,706 INFO L168 Benchmark]: Toolchain (without parser) took 9674.76 ms. Allocated memory was 302.0 MB in the beginning and 4.9 GB in the end (delta: 4.6 GB). Free memory was 276.0 MB in the beginning and 4.5 GB in the end (delta: -4.2 GB). Peak memory consumption was 623.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:21:28,706 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:21:28,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.94 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 276.4 MB in the end (delta: -669.6 kB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:21:28,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.12 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 274.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:21:28,712 INFO L168 Benchmark]: Boogie Preprocessor took 61.26 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 273.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:21:28,715 INFO L168 Benchmark]: RCFGBuilder took 515.49 ms. Allocated memory is still 302.0 MB. Free memory was 273.2 MB in the beginning and 250.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:21:28,721 INFO L168 Benchmark]: TraceAbstraction took 8355.59 ms. Allocated memory was 302.0 MB in the beginning and 4.9 GB in the end (delta: 4.6 GB). Free memory was 249.1 MB in the beginning and 4.5 GB in the end (delta: -4.2 GB). Peak memory consumption was 597.2 MB. Max. memory is 16.0 GB. [2021-01-20 21:21:28,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 302.0 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 661.94 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 276.4 MB in the end (delta: -669.6 kB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 71.12 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 274.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 61.26 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 273.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 515.49 ms. Allocated memory is still 302.0 MB. Free memory was 273.2 MB in the beginning and 250.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8355.59 ms. Allocated memory was 302.0 MB in the beginning and 4.9 GB in the end (delta: 4.6 GB). Free memory was 249.1 MB in the beginning and 4.5 GB in the end (delta: -4.2 GB). Peak memory consumption was 597.2 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: 8.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 934 SDtfs, 1783 SDslu, 3190 SDs, 0 SdLazy, 375 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57184occurred in iteration=4, 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, 1.5s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 48748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...