/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/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:07:24,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:07:24,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:07:24,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:07:24,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:07:24,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:07:24,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:07:24,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:07:24,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:07:24,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:07:24,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:07:24,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:07:24,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:07:24,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:07:24,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:07:24,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:07:24,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:07:24,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:07:24,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:07:24,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:07:24,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:07:24,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:07:24,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:07:24,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:07:24,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 18:07:24,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 18:07:24,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 18:07:24,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 18:07:24,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 18:07:24,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 18:07:24,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:07:24,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:07:24,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:07:24,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:07:24,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:07:24,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:07:24,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:07:24,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:07:24,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:07:24,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:07:24,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:07:24,401 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 [2020-11-11 18:07:24,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:07:24,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:07:24,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:07:24,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:07:24,471 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:07:24,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:07:24,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:07:24,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:07:24,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:07:24,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:07:24,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:07:24,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:07:24,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:07:24,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:07:24,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:07:24,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:07:24,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:07:24,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:07:24,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:07:24,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:07:24,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:07:24,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:07:24,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:07:24,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:07:24,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:07:24,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:07:24,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:07:24,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:07:24,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:07:24,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:07:24,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:07:24,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:07:24,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:07:24,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:07:24,924 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:07:24,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-11-11 18:07:25,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9dafbb02/79588b61049b4a318ad1e51c6f393336/FLAGcc1350943 [2020-11-11 18:07:25,869 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:07:25,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-11-11 18:07:25,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9dafbb02/79588b61049b4a318ad1e51c6f393336/FLAGcc1350943 [2020-11-11 18:07:26,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9dafbb02/79588b61049b4a318ad1e51c6f393336 [2020-11-11 18:07:26,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:07:26,153 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:07:26,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:07:26,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:07:26,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:07:26,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b359d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26, skipping insertion in model container [2020-11-11 18:07:26,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:07:26,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:07:26,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:07:26,699 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:07:26,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:07:26,860 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:07:26,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26 WrapperNode [2020-11-11 18:07:26,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:07:26,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:07:26,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:07:26,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:07:26,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:07:26,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:07:26,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:07:26,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:07:26,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... [2020-11-11 18:07:26,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:07:26,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:07:27,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:07:27,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:07:27,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:07:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:07:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:07:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:07:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:07:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:07:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:07:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:07:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:07:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:07:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:07:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:07:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:07:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:07:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:07:27,095 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:07:27,621 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:07:27,621 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:07:27,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:07:27 BoogieIcfgContainer [2020-11-11 18:07:27,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:07:27,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:07:27,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:07:27,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:07:27,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:07:26" (1/3) ... [2020-11-11 18:07:27,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8589e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:07:27, skipping insertion in model container [2020-11-11 18:07:27,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:07:26" (2/3) ... [2020-11-11 18:07:27,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8589e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:07:27, skipping insertion in model container [2020-11-11 18:07:27,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:07:27" (3/3) ... [2020-11-11 18:07:27,633 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-11-11 18:07:27,650 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:07:27,650 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:07:27,654 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:07:27,656 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:07:27,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,691 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,692 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,692 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,694 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,703 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,710 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,710 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,711 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,711 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,713 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:07:27,716 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:07:27,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:07:27,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:07:27,751 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:07:27,751 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:07:27,751 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:07:27,751 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:07:27,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:07:27,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:07:27,753 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:07:27,766 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 80 transitions, 175 flow [2020-11-11 18:07:28,619 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:28,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-11 18:07:28,739 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:28,741 INFO L494 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] [2020-11-11 18:07:28,741 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash 188737205, now seen corresponding path program 1 times [2020-11-11 18:07:28,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:28,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189934537] [2020-11-11 18:07:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:29,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189934537] [2020-11-11 18:07:29,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:29,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:07:29,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316653018] [2020-11-11 18:07:29,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:07:29,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:29,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:07:29,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:07:29,382 INFO L87 Difference]: Start difference. First operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:29,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:29,840 INFO L93 Difference]: Finished difference Result 12201 states and 42465 transitions. [2020-11-11 18:07:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:07:29,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2020-11-11 18:07:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:29,905 INFO L225 Difference]: With dead ends: 12201 [2020-11-11 18:07:29,905 INFO L226 Difference]: Without dead ends: 4606 [2020-11-11 18:07:29,907 INFO L749 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 [2020-11-11 18:07:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2020-11-11 18:07:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4606. [2020-11-11 18:07:30,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 4605 states have (on average 3.414766558089034) internal successors, (15725), 4605 states have internal predecessors, (15725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 15725 transitions. [2020-11-11 18:07:30,373 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 15725 transitions. Word has length 43 [2020-11-11 18:07:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:30,374 INFO L481 AbstractCegarLoop]: Abstraction has 4606 states and 15725 transitions. [2020-11-11 18:07:30,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 15725 transitions. [2020-11-11 18:07:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:07:30,391 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:30,392 INFO L494 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] [2020-11-11 18:07:30,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:07:30,396 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:30,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1390475924, now seen corresponding path program 1 times [2020-11-11 18:07:30,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:30,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82347086] [2020-11-11 18:07:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:30,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82347086] [2020-11-11 18:07:30,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:30,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:07:30,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132321196] [2020-11-11 18:07:30,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:07:30,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:30,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:07:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:07:30,724 INFO L87 Difference]: Start difference. First operand 4606 states and 15725 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2020-11-11 18:07:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:31,274 INFO L93 Difference]: Finished difference Result 5726 states and 19296 transitions. [2020-11-11 18:07:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:07:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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 [2020-11-11 18:07:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:31,310 INFO L225 Difference]: With dead ends: 5726 [2020-11-11 18:07:31,311 INFO L226 Difference]: Without dead ends: 2871 [2020-11-11 18:07:31,312 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:07:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-11-11 18:07:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2871. [2020-11-11 18:07:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2871 states, 2870 states have (on average 3.3041811846689897) internal successors, (9483), 2870 states have internal predecessors, (9483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2871 states to 2871 states and 9483 transitions. [2020-11-11 18:07:31,429 INFO L78 Accepts]: Start accepts. Automaton has 2871 states and 9483 transitions. Word has length 45 [2020-11-11 18:07:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:31,430 INFO L481 AbstractCegarLoop]: Abstraction has 2871 states and 9483 transitions. [2020-11-11 18:07:31,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2020-11-11 18:07:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states and 9483 transitions. [2020-11-11 18:07:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:07:31,439 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:31,440 INFO L494 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] [2020-11-11 18:07:31,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:07:31,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:31,441 INFO L82 PathProgramCache]: Analyzing trace with hash -983473269, now seen corresponding path program 1 times [2020-11-11 18:07:31,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:31,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157097721] [2020-11-11 18:07:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:31,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157097721] [2020-11-11 18:07:31,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:31,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:07:31,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263303743] [2020-11-11 18:07:31,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:07:31,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:31,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:07:31,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:07:31,608 INFO L87 Difference]: Start difference. First operand 2871 states and 9483 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:31,950 INFO L93 Difference]: Finished difference Result 3791 states and 12381 transitions. [2020-11-11 18:07:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:07:31,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 48 [2020-11-11 18:07:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:31,967 INFO L225 Difference]: With dead ends: 3791 [2020-11-11 18:07:31,967 INFO L226 Difference]: Without dead ends: 1761 [2020-11-11 18:07:31,968 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:07:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2020-11-11 18:07:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1761. [2020-11-11 18:07:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1761 states, 1760 states have (on average 3.1585227272727274) internal successors, (5559), 1760 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 5559 transitions. [2020-11-11 18:07:32,038 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 5559 transitions. Word has length 48 [2020-11-11 18:07:32,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:32,039 INFO L481 AbstractCegarLoop]: Abstraction has 1761 states and 5559 transitions. [2020-11-11 18:07:32,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:32,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 5559 transitions. [2020-11-11 18:07:32,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:07:32,045 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:32,045 INFO L494 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] [2020-11-11 18:07:32,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:07:32,046 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:32,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:32,046 INFO L82 PathProgramCache]: Analyzing trace with hash -514850718, now seen corresponding path program 1 times [2020-11-11 18:07:32,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:32,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109661862] [2020-11-11 18:07:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:32,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109661862] [2020-11-11 18:07:32,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:32,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:07:32,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733451201] [2020-11-11 18:07:32,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:07:32,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:32,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:07:32,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:07:32,333 INFO L87 Difference]: Start difference. First operand 1761 states and 5559 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2020-11-11 18:07:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:32,599 INFO L93 Difference]: Finished difference Result 2227 states and 6964 transitions. [2020-11-11 18:07:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:07:32,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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 [2020-11-11 18:07:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:32,618 INFO L225 Difference]: With dead ends: 2227 [2020-11-11 18:07:32,618 INFO L226 Difference]: Without dead ends: 1635 [2020-11-11 18:07:32,619 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:07:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2020-11-11 18:07:32,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2020-11-11 18:07:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.13953488372093) internal successors, (5130), 1634 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 5130 transitions. [2020-11-11 18:07:32,687 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 5130 transitions. Word has length 51 [2020-11-11 18:07:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:32,688 INFO L481 AbstractCegarLoop]: Abstraction has 1635 states and 5130 transitions. [2020-11-11 18:07:32,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2020-11-11 18:07:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 5130 transitions. [2020-11-11 18:07:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-11 18:07:32,693 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:32,693 INFO L494 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] [2020-11-11 18:07:32,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:07:32,694 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash -578455667, now seen corresponding path program 1 times [2020-11-11 18:07:32,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:32,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554535076] [2020-11-11 18:07:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:32,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554535076] [2020-11-11 18:07:32,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:32,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:07:32,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259007541] [2020-11-11 18:07:32,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:07:32,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:32,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:07:32,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:07:32,921 INFO L87 Difference]: Start difference. First operand 1635 states and 5130 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2020-11-11 18:07:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:33,080 INFO L93 Difference]: Finished difference Result 1794 states and 5497 transitions. [2020-11-11 18:07:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:07:33,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 [2020-11-11 18:07:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:33,091 INFO L225 Difference]: With dead ends: 1794 [2020-11-11 18:07:33,091 INFO L226 Difference]: Without dead ends: 1290 [2020-11-11 18:07:33,091 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:07:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2020-11-11 18:07:33,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2020-11-11 18:07:33,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.0333591931730024) internal successors, (3910), 1289 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3910 transitions. [2020-11-11 18:07:33,132 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3910 transitions. Word has length 52 [2020-11-11 18:07:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:33,132 INFO L481 AbstractCegarLoop]: Abstraction has 1290 states and 3910 transitions. [2020-11-11 18:07:33,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2020-11-11 18:07:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3910 transitions. [2020-11-11 18:07:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:07:33,136 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:33,136 INFO L494 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] [2020-11-11 18:07:33,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:07:33,137 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1654188560, now seen corresponding path program 1 times [2020-11-11 18:07:33,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:33,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67020635] [2020-11-11 18:07:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:33,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67020635] [2020-11-11 18:07:33,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:33,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:07:33,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876225855] [2020-11-11 18:07:33,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:07:33,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:33,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:07:33,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:07:33,274 INFO L87 Difference]: Start difference. First operand 1290 states and 3910 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:33,471 INFO L93 Difference]: Finished difference Result 1056 states and 3067 transitions. [2020-11-11 18:07:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:07:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-11 18:07:33,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:33,479 INFO L225 Difference]: With dead ends: 1056 [2020-11-11 18:07:33,479 INFO L226 Difference]: Without dead ends: 732 [2020-11-11 18:07:33,479 INFO L749 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 [2020-11-11 18:07:33,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-11-11 18:07:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-11-11 18:07:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 2.80437756497948) internal successors, (2050), 731 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 2050 transitions. [2020-11-11 18:07:33,506 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 2050 transitions. Word has length 53 [2020-11-11 18:07:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:33,506 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 2050 transitions. [2020-11-11 18:07:33,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 2050 transitions. [2020-11-11 18:07:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-11 18:07:33,509 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:07:33,510 INFO L494 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, 1] [2020-11-11 18:07:33,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:07:33,510 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:07:33,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:07:33,511 INFO L82 PathProgramCache]: Analyzing trace with hash -342773393, now seen corresponding path program 1 times [2020-11-11 18:07:33,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:07:33,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880409068] [2020-11-11 18:07:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:07:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:07:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:07:33,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880409068] [2020-11-11 18:07:33,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:07:33,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:07:33,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270219928] [2020-11-11 18:07:33,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:07:33,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:07:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:07:33,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:07:33,700 INFO L87 Difference]: Start difference. First operand 732 states and 2050 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:07:33,779 INFO L93 Difference]: Finished difference Result 624 states and 1726 transitions. [2020-11-11 18:07:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:07:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2020-11-11 18:07:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:07:33,780 INFO L225 Difference]: With dead ends: 624 [2020-11-11 18:07:33,780 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:07:33,781 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:07:33,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:07:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:07:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:07:33,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-11-11 18:07:33,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:07:33,782 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:07:33,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:07:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:07:33,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:07:33,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:07:33,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:07:33 BasicIcfg [2020-11-11 18:07:33,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:07:33,792 INFO L168 Benchmark]: Toolchain (without parser) took 7641.65 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 277.2 MB in the beginning and 513.9 MB in the end (delta: -236.7 MB). Peak memory consumption was 96.3 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:33,793 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:07:33,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.22 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 245.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:33,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.86 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 243.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:07:33,801 INFO L168 Benchmark]: Boogie Preprocessor took 64.59 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 241.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:07:33,801 INFO L168 Benchmark]: RCFGBuilder took 624.87 ms. Allocated memory is still 302.0 MB. Free memory was 241.8 MB in the beginning and 263.7 MB in the end (delta: -21.9 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:33,802 INFO L168 Benchmark]: TraceAbstraction took 6162.92 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 262.7 MB in the beginning and 513.9 MB in the end (delta: -251.2 MB). Peak memory consumption was 79.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:07:33,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 704.22 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 245.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 64.86 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 243.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 64.59 ms. Allocated memory is still 302.0 MB. Free memory was 243.2 MB in the beginning and 241.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 624.87 ms. Allocated memory is still 302.0 MB. Free memory was 241.8 MB in the beginning and 263.7 MB in the end (delta: -21.9 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6162.92 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 262.7 MB in the beginning and 513.9 MB in the end (delta: -251.2 MB). Peak memory consumption was 79.1 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 645 SDtfs, 998 SDslu, 2059 SDs, 0 SdLazy, 247 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9849occurred 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: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 340 ConstructedInterpolants, 0 QuantifiedInterpolants, 45502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...