/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:12:47,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:12:47,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:12:47,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:12:47,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:12:47,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:12:47,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:12:47,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:12:47,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:12:47,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:12:47,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:12:47,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:12:47,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:12:47,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:12:47,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:12:47,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:12:47,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:12:47,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:12:47,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:12:47,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:12:47,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:12:47,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:12:47,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:12:47,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:12:47,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:12:47,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:12:47,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:12:47,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:12:47,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:12:47,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:12:47,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:12:47,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:12:47,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:12:47,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:12:47,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:12:47,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:12:47,652 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 18:12:47,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:12:47,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:12:47,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:12:47,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:12:47,715 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:12:47,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:12:47,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:12:47,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:12:47,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:12:47,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:12:47,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:12:47,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:12:47,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:12:47,719 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:12:47,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:12:47,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:12:47,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:12:47,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:12:47,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:12:47,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:12:47,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:12:47,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:12:47,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:12:47,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:12:47,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:12:47,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:12:47,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:12:47,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:12:47,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:12:47,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:12:48,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:12:48,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:12:48,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:12:48,161 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:12:48,162 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:12:48,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-11-11 18:12:48,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583d04d98/bd5330e17dc747d8b6d38b5248a47e7d/FLAGebb444b01 [2020-11-11 18:12:48,963 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:12:48,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-11-11 18:12:48,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583d04d98/bd5330e17dc747d8b6d38b5248a47e7d/FLAGebb444b01 [2020-11-11 18:12:49,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583d04d98/bd5330e17dc747d8b6d38b5248a47e7d [2020-11-11 18:12:49,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:12:49,273 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:12:49,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:12:49,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:12:49,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:12:49,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:12:49" (1/1) ... [2020-11-11 18:12:49,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c469bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:49, skipping insertion in model container [2020-11-11 18:12:49,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:12:49" (1/1) ... [2020-11-11 18:12:49,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:12:49,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:12:49,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:12:49,866 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:12:49,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:12:50,092 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:12:50,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50 WrapperNode [2020-11-11 18:12:50,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:12:50,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:12:50,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:12:50,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:12:50,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:12:50,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:12:50,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:12:50,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:12:50,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (1/1) ... [2020-11-11 18:12:50,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:12:50,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:12:50,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:12:50,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:12:50,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (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 18:12:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:12:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:12:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:12:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:12:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:12:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:12:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:12:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:12:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:12:50,360 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:12:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:12:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:12:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:12:50,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:12:50,363 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 18:12:50,855 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:12:50,856 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:12:50,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:12:50 BoogieIcfgContainer [2020-11-11 18:12:50,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:12:50,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:12:50,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:12:50,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:12:50,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:12:49" (1/3) ... [2020-11-11 18:12:50,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b522a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:12:50, skipping insertion in model container [2020-11-11 18:12:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:50" (2/3) ... [2020-11-11 18:12:50,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b522a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:12:50, skipping insertion in model container [2020-11-11 18:12:50,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:12:50" (3/3) ... [2020-11-11 18:12:50,869 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-11-11 18:12:50,885 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:12:50,886 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:12:50,890 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:12:50,891 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:12:50,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,934 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,935 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,938 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,938 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,939 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,939 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,943 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,943 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,943 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,951 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,955 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,955 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,955 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,956 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:50,959 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:12:50,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:12:50,996 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:12:50,997 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:12:50,997 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:12:50,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:12:50,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:12:50,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:12:50,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:12:50,998 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:12:51,011 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 18:12:51,789 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) [2020-11-11 18:12:51,831 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) [2020-11-11 18:12:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:12:51,894 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:51,895 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] [2020-11-11 18:12:51,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1953454049, now seen corresponding path program 1 times [2020-11-11 18:12:51,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:51,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381244996] [2020-11-11 18:12:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:52,610 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 18:12:52,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381244996] [2020-11-11 18:12:52,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:52,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:52,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440843530] [2020-11-11 18:12:52,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:52,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:52,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:52,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:52,668 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) [2020-11-11 18:12:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:53,113 INFO L93 Difference]: Finished difference Result 11318 states and 39237 transitions. [2020-11-11 18:12:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:53,115 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 [2020-11-11 18:12:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:53,176 INFO L225 Difference]: With dead ends: 11318 [2020-11-11 18:12:53,176 INFO L226 Difference]: Without dead ends: 4213 [2020-11-11 18:12:53,178 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 18:12:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2020-11-11 18:12:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4213. [2020-11-11 18:12:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4213 states, 4212 states have (on average 3.3874643874643873) internal successors, (14268), 4212 states have internal predecessors, (14268), 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 18:12:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4213 states to 4213 states and 14268 transitions. [2020-11-11 18:12:53,597 INFO L78 Accepts]: Start accepts. Automaton has 4213 states and 14268 transitions. Word has length 42 [2020-11-11 18:12:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:53,598 INFO L481 AbstractCegarLoop]: Abstraction has 4213 states and 14268 transitions. [2020-11-11 18:12:53,599 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) [2020-11-11 18:12:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4213 states and 14268 transitions. [2020-11-11 18:12:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:12:53,616 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:53,618 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 18:12:53,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:12:53,622 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:53,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1558378250, now seen corresponding path program 1 times [2020-11-11 18:12:53,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:53,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208874727] [2020-11-11 18:12:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:53,902 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 18:12:53,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208874727] [2020-11-11 18:12:53,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:53,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:53,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674686106] [2020-11-11 18:12:53,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:53,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:53,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:53,907 INFO L87 Difference]: Start difference. First operand 4213 states and 14268 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) [2020-11-11 18:12:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:54,233 INFO L93 Difference]: Finished difference Result 6434 states and 21456 transitions. [2020-11-11 18:12:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:54,234 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 [2020-11-11 18:12:54,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:54,264 INFO L225 Difference]: With dead ends: 6434 [2020-11-11 18:12:54,264 INFO L226 Difference]: Without dead ends: 3235 [2020-11-11 18:12:54,265 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 18:12:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2020-11-11 18:12:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 3235. [2020-11-11 18:12:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 3.3123067408781695) internal successors, (10712), 3234 states have internal predecessors, (10712), 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 18:12:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 10712 transitions. [2020-11-11 18:12:54,404 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 10712 transitions. Word has length 45 [2020-11-11 18:12:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:54,405 INFO L481 AbstractCegarLoop]: Abstraction has 3235 states and 10712 transitions. [2020-11-11 18:12:54,405 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) [2020-11-11 18:12:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 10712 transitions. [2020-11-11 18:12:54,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:12:54,414 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:54,415 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] [2020-11-11 18:12:54,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:12:54,415 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:54,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:54,416 INFO L82 PathProgramCache]: Analyzing trace with hash -529352823, now seen corresponding path program 1 times [2020-11-11 18:12:54,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:54,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850225819] [2020-11-11 18:12:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:54,636 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 18:12:54,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850225819] [2020-11-11 18:12:54,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:54,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:54,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715374404] [2020-11-11 18:12:54,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:54,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:54,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:54,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:54,644 INFO L87 Difference]: Start difference. First operand 3235 states and 10712 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) [2020-11-11 18:12:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:54,890 INFO L93 Difference]: Finished difference Result 3475 states and 11384 transitions. [2020-11-11 18:12:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:54,891 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 [2020-11-11 18:12:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:54,917 INFO L225 Difference]: With dead ends: 3475 [2020-11-11 18:12:54,918 INFO L226 Difference]: Without dead ends: 2915 [2020-11-11 18:12:54,919 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 18:12:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-11-11 18:12:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2915. [2020-11-11 18:12:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 3.286204529855868) internal successors, (9576), 2914 states have internal predecessors, (9576), 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 18:12:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 9576 transitions. [2020-11-11 18:12:55,092 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 9576 transitions. Word has length 47 [2020-11-11 18:12:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:55,095 INFO L481 AbstractCegarLoop]: Abstraction has 2915 states and 9576 transitions. [2020-11-11 18:12:55,096 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) [2020-11-11 18:12:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 9576 transitions. [2020-11-11 18:12:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:12:55,105 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:55,105 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] [2020-11-11 18:12:55,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:12:55,106 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1641571734, now seen corresponding path program 1 times [2020-11-11 18:12:55,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:55,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063839272] [2020-11-11 18:12:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:55,317 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 18:12:55,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063839272] [2020-11-11 18:12:55,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:55,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:55,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059566963] [2020-11-11 18:12:55,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:55,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:55,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:55,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:55,319 INFO L87 Difference]: Start difference. First operand 2915 states and 9576 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) [2020-11-11 18:12:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:55,663 INFO L93 Difference]: Finished difference Result 3855 states and 12593 transitions. [2020-11-11 18:12:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:12:55,664 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 [2020-11-11 18:12:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:55,682 INFO L225 Difference]: With dead ends: 3855 [2020-11-11 18:12:55,682 INFO L226 Difference]: Without dead ends: 2090 [2020-11-11 18:12:55,682 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:12:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-11-11 18:12:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2020-11-11 18:12:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 3.1680229775011965) internal successors, (6618), 2089 states have internal predecessors, (6618), 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 18:12:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 6618 transitions. [2020-11-11 18:12:55,817 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 6618 transitions. Word has length 49 [2020-11-11 18:12:55,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:55,818 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states and 6618 transitions. [2020-11-11 18:12:55,818 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) [2020-11-11 18:12:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 6618 transitions. [2020-11-11 18:12:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:12:55,825 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:55,826 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] [2020-11-11 18:12:55,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:12:55,826 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1854967778, now seen corresponding path program 1 times [2020-11-11 18:12:55,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:55,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53650642] [2020-11-11 18:12:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:56,060 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 18:12:56,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53650642] [2020-11-11 18:12:56,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:56,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:56,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307727014] [2020-11-11 18:12:56,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:56,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:56,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:56,069 INFO L87 Difference]: Start difference. First operand 2090 states and 6618 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) [2020-11-11 18:12:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:56,370 INFO L93 Difference]: Finished difference Result 2646 states and 8314 transitions. [2020-11-11 18:12:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:56,371 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 [2020-11-11 18:12:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:56,388 INFO L225 Difference]: With dead ends: 2646 [2020-11-11 18:12:56,388 INFO L226 Difference]: Without dead ends: 1934 [2020-11-11 18:12:56,388 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:12:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-11-11 18:12:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1934. [2020-11-11 18:12:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 3.1370926021727885) internal successors, (6064), 1933 states have internal predecessors, (6064), 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 18:12:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 6064 transitions. [2020-11-11 18:12:56,473 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 6064 transitions. Word has length 50 [2020-11-11 18:12:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:56,473 INFO L481 AbstractCegarLoop]: Abstraction has 1934 states and 6064 transitions. [2020-11-11 18:12:56,474 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) [2020-11-11 18:12:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 6064 transitions. [2020-11-11 18:12:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:12:56,480 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:56,481 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 18:12:56,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:12:56,481 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:56,482 INFO L82 PathProgramCache]: Analyzing trace with hash -250295335, now seen corresponding path program 1 times [2020-11-11 18:12:56,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:56,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268287976] [2020-11-11 18:12:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:56,671 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 18:12:56,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268287976] [2020-11-11 18:12:56,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:56,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:56,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608743854] [2020-11-11 18:12:56,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:56,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:56,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:56,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:56,674 INFO L87 Difference]: Start difference. First operand 1934 states and 6064 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) [2020-11-11 18:12:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:56,972 INFO L93 Difference]: Finished difference Result 2114 states and 6487 transitions. [2020-11-11 18:12:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:12:56,974 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 [2020-11-11 18:12:56,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:56,987 INFO L225 Difference]: With dead ends: 2114 [2020-11-11 18:12:56,987 INFO L226 Difference]: Without dead ends: 1514 [2020-11-11 18:12:56,987 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:12:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-11-11 18:12:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2020-11-11 18:12:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.019828155981494) internal successors, (4569), 1513 states have internal predecessors, (4569), 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 18:12:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4569 transitions. [2020-11-11 18:12:57,094 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4569 transitions. Word has length 51 [2020-11-11 18:12:57,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:57,095 INFO L481 AbstractCegarLoop]: Abstraction has 1514 states and 4569 transitions. [2020-11-11 18:12:57,095 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) [2020-11-11 18:12:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4569 transitions. [2020-11-11 18:12:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-11 18:12:57,100 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:57,100 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 18:12:57,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:12:57,101 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:57,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:57,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1821297602, now seen corresponding path program 1 times [2020-11-11 18:12:57,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:57,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235862899] [2020-11-11 18:12:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:57,302 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 18:12:57,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235862899] [2020-11-11 18:12:57,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:57,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:12:57,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208813348] [2020-11-11 18:12:57,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:12:57,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:57,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:12:57,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:12:57,304 INFO L87 Difference]: Start difference. First operand 1514 states and 4569 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) [2020-11-11 18:12:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:57,606 INFO L93 Difference]: Finished difference Result 1271 states and 3696 transitions. [2020-11-11 18:12:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:12:57,607 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 [2020-11-11 18:12:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:57,612 INFO L225 Difference]: With dead ends: 1271 [2020-11-11 18:12:57,613 INFO L226 Difference]: Without dead ends: 911 [2020-11-11 18:12:57,613 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:12:57,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-11-11 18:12:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2020-11-11 18:12:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 2.812087912087912) internal successors, (2559), 910 states have internal predecessors, (2559), 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 18:12:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 2559 transitions. [2020-11-11 18:12:57,643 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 2559 transitions. Word has length 52 [2020-11-11 18:12:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:57,644 INFO L481 AbstractCegarLoop]: Abstraction has 911 states and 2559 transitions. [2020-11-11 18:12:57,644 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) [2020-11-11 18:12:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 2559 transitions. [2020-11-11 18:12:57,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:12:57,647 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:57,647 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] [2020-11-11 18:12:57,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:12:57,648 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:57,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2028376861, now seen corresponding path program 1 times [2020-11-11 18:12:57,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:57,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842763362] [2020-11-11 18:12:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:57,840 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 18:12:57,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842763362] [2020-11-11 18:12:57,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:57,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:57,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515054375] [2020-11-11 18:12:57,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:57,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:57,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:57,842 INFO L87 Difference]: Start difference. First operand 911 states and 2559 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) [2020-11-11 18:12:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:58,017 INFO L93 Difference]: Finished difference Result 803 states and 2235 transitions. [2020-11-11 18:12:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:12:58,018 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 [2020-11-11 18:12:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:58,018 INFO L225 Difference]: With dead ends: 803 [2020-11-11 18:12:58,018 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:12:58,019 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:12:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:12:58,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:12:58,019 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 18:12:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:12:58,020 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-11 18:12:58,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:58,020 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:12:58,020 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) [2020-11-11 18:12:58,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:12:58,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:12:58,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:12:58,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:12:58 BasicIcfg [2020-11-11 18:12:58,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:12:58,037 INFO L168 Benchmark]: Toolchain (without parser) took 8762.94 ms. Allocated memory was 302.0 MB in the beginning and 658.5 MB in the end (delta: 356.5 MB). Free memory was 276.9 MB in the beginning and 488.6 MB in the end (delta: -211.7 MB). Peak memory consumption was 146.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:58,038 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:12:58,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.02 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 244.4 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:58,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.40 ms. Allocated memory is still 302.0 MB. Free memory was 244.4 MB in the beginning and 242.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:58,041 INFO L168 Benchmark]: Boogie Preprocessor took 59.40 ms. Allocated memory is still 302.0 MB. Free memory was 242.5 MB in the beginning and 241.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:12:58,042 INFO L168 Benchmark]: RCFGBuilder took 605.98 ms. Allocated memory is still 302.0 MB. Free memory was 241.1 MB in the beginning and 262.7 MB in the end (delta: -21.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:58,046 INFO L168 Benchmark]: TraceAbstraction took 7167.41 ms. Allocated memory was 302.0 MB in the beginning and 658.5 MB in the end (delta: 356.5 MB). Free memory was 262.7 MB in the beginning and 488.6 MB in the end (delta: -226.0 MB). Peak memory consumption was 131.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:58,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 817.02 ms. Allocated memory is still 302.0 MB. Free memory was 276.1 MB in the beginning and 244.4 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 95.40 ms. Allocated memory is still 302.0 MB. Free memory was 244.4 MB in the beginning and 242.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 59.40 ms. Allocated memory is still 302.0 MB. Free memory was 242.5 MB in the beginning and 241.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 605.98 ms. Allocated memory is still 302.0 MB. Free memory was 241.1 MB in the beginning and 262.7 MB in the end (delta: -21.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7167.41 ms. Allocated memory was 302.0 MB in the beginning and 658.5 MB in the end (delta: 356.5 MB). Free memory was 262.7 MB in the beginning and 488.6 MB in the end (delta: -226.0 MB). Peak memory consumption was 131.6 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: 7.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 765 SDtfs, 1031 SDslu, 2388 SDs, 0 SdLazy, 296 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s 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...