/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-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:19:30,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:19:30,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:19:30,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:19:30,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:19:30,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:19:30,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:19:30,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:19:30,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:19:30,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:19:30,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:19:30,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:19:30,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:19:30,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:19:30,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:19:30,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:19:30,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:19:30,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:19:30,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:19:30,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:19:30,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:19:30,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:19:30,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:19:30,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:19:30,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 12:19:30,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 12:19:30,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 12:19:30,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 12:19:30,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 12:19:30,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 12:19:30,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:19:30,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:19:30,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:19:30,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:19:30,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:19:30,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:19:30,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:19:30,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:19:30,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:19:30,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:19:30,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:19:30,875 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-New_States.epf [2020-11-12 12:19:30,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:19:30,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:19:30,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:19:30,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:19:30,906 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:19:30,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:19:30,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:19:30,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:19:30,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:19:30,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:19:30,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:19:30,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:19:30,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:19:30,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:19:30,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:19:30,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:19:30,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:19:30,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:19:30,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:19:30,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:19:30,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:19:30,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:19:30,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:19:30,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:19:30,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:19:30,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:19:30,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:19:30,912 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:19:30,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:19:30,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:19:30,912 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:19:31,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:19:31,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:19:31,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:19:31,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:19:31,376 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:19:31,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-11-12 12:19:31,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2063e5dc/407e167222594a16bee0d5200c52af44/FLAG397aa1273 [2020-11-12 12:19:32,272 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:19:32,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-11-12 12:19:32,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2063e5dc/407e167222594a16bee0d5200c52af44/FLAG397aa1273 [2020-11-12 12:19:32,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2063e5dc/407e167222594a16bee0d5200c52af44 [2020-11-12 12:19:32,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:19:32,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:19:32,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:19:32,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:19:32,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:19:32,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:19:32" (1/1) ... [2020-11-12 12:19:32,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed281f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:32, skipping insertion in model container [2020-11-12 12:19:32,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:19:32" (1/1) ... [2020-11-12 12:19:32,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:19:32,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:19:33,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:19:33,176 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:19:33,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:19:33,376 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:19:33,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33 WrapperNode [2020-11-12 12:19:33,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:19:33,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:19:33,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:19:33,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:19:33,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:19:33,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:19:33,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:19:33,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:19:33,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (1/1) ... [2020-11-12 12:19:33,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:19:33,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:19:33,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:19:33,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:19:33,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (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 [2020-11-12 12:19:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:19:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:19:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:19:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:19:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:19:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:19:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:19:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:19:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:19:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:19:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:19:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:19:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:19:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:19:33,585 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:19:34,004 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:19:34,004 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:19:34,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:19:34 BoogieIcfgContainer [2020-11-12 12:19:34,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:19:34,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:19:34,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:19:34,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:19:34,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:19:32" (1/3) ... [2020-11-12 12:19:34,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dee824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:19:34, skipping insertion in model container [2020-11-12 12:19:34,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:33" (2/3) ... [2020-11-12 12:19:34,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dee824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:19:34, skipping insertion in model container [2020-11-12 12:19:34,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:19:34" (3/3) ... [2020-11-12 12:19:34,017 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-11-12 12:19:34,035 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:19:34,035 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:19:34,039 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:19:34,040 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:19:34,111 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,117 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,117 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,117 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,118 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,118 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,118 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,119 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,126 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,128 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,128 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,131 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,132 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,133 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,133 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,140 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,151 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,152 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,159 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,160 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,160 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,160 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:34,172 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:19:34,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:19:34,215 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:19:34,215 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:19:34,215 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:19:34,215 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:19:34,215 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:19:34,216 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:19:34,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:19:34,216 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:19:34,229 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:19:35,246 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-11-12 12:19:36,293 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 1044ms [2020-11-12 12:19:36,341 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-11-12 12:19:36,515 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34478 states, 31541 states have (on average 1.210868393519546) internal successors, (38192), 34477 states have internal predecessors, (38192), 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) [2020-11-12 12:19:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 34478 states, 31541 states have (on average 1.210868393519546) internal successors, (38192), 34477 states have internal predecessors, (38192), 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) [2020-11-12 12:19:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 12:19:36,577 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:36,578 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] [2020-11-12 12:19:36,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:36,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2020-11-12 12:19:36,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:36,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537268228] [2020-11-12 12:19:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:37,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537268228] [2020-11-12 12:19:37,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:37,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:37,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259094778] [2020-11-12 12:19:37,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:37,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:37,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:37,185 INFO L87 Difference]: Start difference. First operand has 34478 states, 31541 states have (on average 1.210868393519546) internal successors, (38192), 34477 states have internal predecessors, (38192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2020-11-12 12:19:37,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:37,548 INFO L93 Difference]: Finished difference Result 14333 states and 16957 transitions. [2020-11-12 12:19:37,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:19:37,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2020-11-12 12:19:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:37,593 INFO L225 Difference]: With dead ends: 14333 [2020-11-12 12:19:37,593 INFO L226 Difference]: Without dead ends: 4660 [2020-11-12 12:19:37,595 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2020-11-12 12:19:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4660. [2020-11-12 12:19:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4660 states, 4415 states have (on average 1.3619479048697622) internal successors, (6013), 4659 states have internal predecessors, (6013), 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) [2020-11-12 12:19:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4660 states to 4660 states and 6013 transitions. [2020-11-12 12:19:37,886 INFO L78 Accepts]: Start accepts. Automaton has 4660 states and 6013 transitions. Word has length 41 [2020-11-12 12:19:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:37,887 INFO L481 AbstractCegarLoop]: Abstraction has 4660 states and 6013 transitions. [2020-11-12 12:19:37,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2020-11-12 12:19:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4660 states and 6013 transitions. [2020-11-12 12:19:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 12:19:37,901 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:37,901 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] [2020-11-12 12:19:37,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:19:37,902 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash -160781645, now seen corresponding path program 1 times [2020-11-12 12:19:37,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:37,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032823560] [2020-11-12 12:19:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:38,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032823560] [2020-11-12 12:19:38,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:38,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:38,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523151070] [2020-11-12 12:19:38,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:38,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:38,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:38,133 INFO L87 Difference]: Start difference. First operand 4660 states and 6013 transitions. 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) [2020-11-12 12:19:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:38,290 INFO L93 Difference]: Finished difference Result 5037 states and 6347 transitions. [2020-11-12 12:19:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:38,290 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 [2020-11-12 12:19:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:38,308 INFO L225 Difference]: With dead ends: 5037 [2020-11-12 12:19:38,308 INFO L226 Difference]: Without dead ends: 3672 [2020-11-12 12:19:38,309 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2020-11-12 12:19:38,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3672. [2020-11-12 12:19:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3476 states have (on average 1.3012082853855005) internal successors, (4523), 3671 states have internal predecessors, (4523), 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) [2020-11-12 12:19:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4523 transitions. [2020-11-12 12:19:38,399 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4523 transitions. Word has length 43 [2020-11-12 12:19:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:38,399 INFO L481 AbstractCegarLoop]: Abstraction has 3672 states and 4523 transitions. [2020-11-12 12:19:38,400 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) [2020-11-12 12:19:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4523 transitions. [2020-11-12 12:19:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:19:38,406 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:38,406 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] [2020-11-12 12:19:38,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:19:38,407 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash -285059491, now seen corresponding path program 1 times [2020-11-12 12:19:38,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:38,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632466036] [2020-11-12 12:19:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:38,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632466036] [2020-11-12 12:19:38,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:38,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:38,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832640392] [2020-11-12 12:19:38,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:38,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:38,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:38,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:38,588 INFO L87 Difference]: Start difference. First operand 3672 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:38,711 INFO L93 Difference]: Finished difference Result 3876 states and 4727 transitions. [2020-11-12 12:19:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:38,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 12:19:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:38,725 INFO L225 Difference]: With dead ends: 3876 [2020-11-12 12:19:38,725 INFO L226 Difference]: Without dead ends: 2810 [2020-11-12 12:19:38,726 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2020-11-12 12:19:38,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2810. [2020-11-12 12:19:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 2670 states have (on average 1.3119850187265918) internal successors, (3503), 2809 states have internal predecessors, (3503), 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) [2020-11-12 12:19:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 3503 transitions. [2020-11-12 12:19:38,792 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 3503 transitions. Word has length 44 [2020-11-12 12:19:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:38,793 INFO L481 AbstractCegarLoop]: Abstraction has 2810 states and 3503 transitions. [2020-11-12 12:19:38,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 3503 transitions. [2020-11-12 12:19:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:19:38,799 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:38,799 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] [2020-11-12 12:19:38,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:19:38,800 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1125592896, now seen corresponding path program 1 times [2020-11-12 12:19:38,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:38,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662336239] [2020-11-12 12:19:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:39,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662336239] [2020-11-12 12:19:39,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:39,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:39,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210734811] [2020-11-12 12:19:39,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:39,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:39,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:39,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:39,011 INFO L87 Difference]: Start difference. First operand 2810 states and 3503 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:19:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:39,154 INFO L93 Difference]: Finished difference Result 4741 states and 6043 transitions. [2020-11-12 12:19:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:19:39,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-11-12 12:19:39,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:39,169 INFO L225 Difference]: With dead ends: 4741 [2020-11-12 12:19:39,170 INFO L226 Difference]: Without dead ends: 2762 [2020-11-12 12:19:39,170 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2020-11-12 12:19:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2762. [2020-11-12 12:19:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2622 states have (on average 1.3119755911517925) internal successors, (3440), 2761 states have internal predecessors, (3440), 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) [2020-11-12 12:19:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 3440 transitions. [2020-11-12 12:19:39,315 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 3440 transitions. Word has length 46 [2020-11-12 12:19:39,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:39,318 INFO L481 AbstractCegarLoop]: Abstraction has 2762 states and 3440 transitions. [2020-11-12 12:19:39,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:19:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 3440 transitions. [2020-11-12 12:19:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:19:39,325 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:39,325 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] [2020-11-12 12:19:39,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:19:39,325 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:39,326 INFO L82 PathProgramCache]: Analyzing trace with hash 47617986, now seen corresponding path program 2 times [2020-11-12 12:19:39,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:39,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195670611] [2020-11-12 12:19:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:39,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195670611] [2020-11-12 12:19:39,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:39,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:39,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607865141] [2020-11-12 12:19:39,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:39,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:39,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:39,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:39,504 INFO L87 Difference]: Start difference. First operand 2762 states and 3440 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:19:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:39,638 INFO L93 Difference]: Finished difference Result 4645 states and 5852 transitions. [2020-11-12 12:19:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2020-11-12 12:19:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:39,651 INFO L225 Difference]: With dead ends: 4645 [2020-11-12 12:19:39,651 INFO L226 Difference]: Without dead ends: 2685 [2020-11-12 12:19:39,652 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-11-12 12:19:39,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2685. [2020-11-12 12:19:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2545 states have (on average 1.2860510805500982) internal successors, (3273), 2684 states have internal predecessors, (3273), 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) [2020-11-12 12:19:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 3273 transitions. [2020-11-12 12:19:39,721 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 3273 transitions. Word has length 46 [2020-11-12 12:19:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:39,723 INFO L481 AbstractCegarLoop]: Abstraction has 2685 states and 3273 transitions. [2020-11-12 12:19:39,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2020-11-12 12:19:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 3273 transitions. [2020-11-12 12:19:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:19:39,729 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:39,730 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] [2020-11-12 12:19:39,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:19:39,730 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash -29797218, now seen corresponding path program 3 times [2020-11-12 12:19:39,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:39,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466511096] [2020-11-12 12:19:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:39,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466511096] [2020-11-12 12:19:39,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:39,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:39,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493703792] [2020-11-12 12:19:39,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:39,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:39,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:39,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:39,897 INFO L87 Difference]: Start difference. First operand 2685 states and 3273 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-12 12:19:40,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:40,018 INFO L93 Difference]: Finished difference Result 3021 states and 3573 transitions. [2020-11-12 12:19:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:40,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2020-11-12 12:19:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:40,032 INFO L225 Difference]: With dead ends: 3021 [2020-11-12 12:19:40,033 INFO L226 Difference]: Without dead ends: 2525 [2020-11-12 12:19:40,034 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2020-11-12 12:19:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2525. [2020-11-12 12:19:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2393 states have (on average 1.2682824905975763) internal successors, (3035), 2524 states have internal predecessors, (3035), 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) [2020-11-12 12:19:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3035 transitions. [2020-11-12 12:19:40,123 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3035 transitions. Word has length 46 [2020-11-12 12:19:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:40,123 INFO L481 AbstractCegarLoop]: Abstraction has 2525 states and 3035 transitions. [2020-11-12 12:19:40,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-12 12:19:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3035 transitions. [2020-11-12 12:19:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:19:40,129 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:40,129 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] [2020-11-12 12:19:40,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:19:40,129 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:40,131 INFO L82 PathProgramCache]: Analyzing trace with hash 403493214, now seen corresponding path program 1 times [2020-11-12 12:19:40,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:40,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978447221] [2020-11-12 12:19:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:40,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978447221] [2020-11-12 12:19:40,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:40,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:40,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580215107] [2020-11-12 12:19:40,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:40,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:40,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:40,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:40,258 INFO L87 Difference]: Start difference. First operand 2525 states and 3035 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) [2020-11-12 12:19:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:40,413 INFO L93 Difference]: Finished difference Result 4168 states and 4805 transitions. [2020-11-12 12:19:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:40,414 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 [2020-11-12 12:19:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:40,427 INFO L225 Difference]: With dead ends: 4168 [2020-11-12 12:19:40,427 INFO L226 Difference]: Without dead ends: 2464 [2020-11-12 12:19:40,428 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-11-12 12:19:40,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1968. [2020-11-12 12:19:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1868 states have (on average 1.2708779443254818) internal successors, (2374), 1967 states have internal predecessors, (2374), 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) [2020-11-12 12:19:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2374 transitions. [2020-11-12 12:19:40,497 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2374 transitions. Word has length 47 [2020-11-12 12:19:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:40,498 INFO L481 AbstractCegarLoop]: Abstraction has 1968 states and 2374 transitions. [2020-11-12 12:19:40,498 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) [2020-11-12 12:19:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2374 transitions. [2020-11-12 12:19:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:19:40,502 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:40,503 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] [2020-11-12 12:19:40,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:19:40,503 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:40,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1337066365, now seen corresponding path program 1 times [2020-11-12 12:19:40,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:40,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712346501] [2020-11-12 12:19:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:40,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712346501] [2020-11-12 12:19:40,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:40,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:40,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620443110] [2020-11-12 12:19:40,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:40,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:40,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:40,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:40,662 INFO L87 Difference]: Start difference. First operand 1968 states and 2374 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2020-11-12 12:19:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:40,778 INFO L93 Difference]: Finished difference Result 2283 states and 2635 transitions. [2020-11-12 12:19:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:19:40,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 [2020-11-12 12:19:40,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:40,787 INFO L225 Difference]: With dead ends: 2283 [2020-11-12 12:19:40,787 INFO L226 Difference]: Without dead ends: 1869 [2020-11-12 12:19:40,788 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:40,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-11-12 12:19:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1869. [2020-11-12 12:19:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1773 states have (on average 1.252115059221658) internal successors, (2220), 1868 states have internal predecessors, (2220), 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) [2020-11-12 12:19:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2220 transitions. [2020-11-12 12:19:40,837 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2220 transitions. Word has length 48 [2020-11-12 12:19:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:40,837 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 2220 transitions. [2020-11-12 12:19:40,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2020-11-12 12:19:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2220 transitions. [2020-11-12 12:19:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:19:40,842 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:40,842 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] [2020-11-12 12:19:40,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 12:19:40,842 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1115024364, now seen corresponding path program 1 times [2020-11-12 12:19:40,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:40,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337361950] [2020-11-12 12:19:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:40,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337361950] [2020-11-12 12:19:40,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:40,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:40,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936740366] [2020-11-12 12:19:40,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:40,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:40,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:40,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:40,962 INFO L87 Difference]: Start difference. First operand 1869 states and 2220 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) [2020-11-12 12:19:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:41,109 INFO L93 Difference]: Finished difference Result 1881 states and 2123 transitions. [2020-11-12 12:19:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:19:41,110 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 [2020-11-12 12:19:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:41,116 INFO L225 Difference]: With dead ends: 1881 [2020-11-12 12:19:41,116 INFO L226 Difference]: Without dead ends: 1343 [2020-11-12 12:19:41,116 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:19:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-11-12 12:19:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2020-11-12 12:19:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1271 states have (on average 1.1809598741148701) internal successors, (1501), 1342 states have internal predecessors, (1501), 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) [2020-11-12 12:19:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1501 transitions. [2020-11-12 12:19:41,148 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1501 transitions. Word has length 49 [2020-11-12 12:19:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:41,149 INFO L481 AbstractCegarLoop]: Abstraction has 1343 states and 1501 transitions. [2020-11-12 12:19:41,149 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) [2020-11-12 12:19:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1501 transitions. [2020-11-12 12:19:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:19:41,152 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:41,152 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] [2020-11-12 12:19:41,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 12:19:41,153 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash 409992179, now seen corresponding path program 1 times [2020-11-12 12:19:41,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:41,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480810516] [2020-11-12 12:19:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:41,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480810516] [2020-11-12 12:19:41,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:41,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:19:41,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073307016] [2020-11-12 12:19:41,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:19:41,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:41,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:19:41,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:19:41,309 INFO L87 Difference]: Start difference. First operand 1343 states and 1501 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2020-11-12 12:19:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:41,452 INFO L93 Difference]: Finished difference Result 984 states and 1043 transitions. [2020-11-12 12:19:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:19:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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 [2020-11-12 12:19:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:41,455 INFO L225 Difference]: With dead ends: 984 [2020-11-12 12:19:41,455 INFO L226 Difference]: Without dead ends: 470 [2020-11-12 12:19:41,456 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:19:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-11-12 12:19:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2020-11-12 12:19:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 443 states have (on average 1.0586907449209932) internal successors, (469), 469 states have internal predecessors, (469), 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) [2020-11-12 12:19:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 469 transitions. [2020-11-12 12:19:41,465 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 469 transitions. Word has length 51 [2020-11-12 12:19:41,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:41,466 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 469 transitions. [2020-11-12 12:19:41,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2020-11-12 12:19:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 469 transitions. [2020-11-12 12:19:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:19:41,468 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:41,468 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] [2020-11-12 12:19:41,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 12:19:41,468 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash 801746514, now seen corresponding path program 1 times [2020-11-12 12:19:41,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:41,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129807748] [2020-11-12 12:19:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:41,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129807748] [2020-11-12 12:19:41,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:41,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:41,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870869697] [2020-11-12 12:19:41,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:41,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:41,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:41,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:41,586 INFO L87 Difference]: Start difference. First operand 470 states and 469 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:19:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:41,660 INFO L93 Difference]: Finished difference Result 362 states and 361 transitions. [2020-11-12 12:19:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:19:41,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2020-11-12 12:19:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:41,661 INFO L225 Difference]: With dead ends: 362 [2020-11-12 12:19:41,661 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:19:41,662 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:19:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:19:41,662 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) [2020-11-12 12:19:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:19:41,662 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:19:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:41,663 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:19:41,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:19:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:19:41,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:19:41,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 12:19:41,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:19:41 BasicIcfg [2020-11-12 12:19:41,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:19:41,672 INFO L168 Benchmark]: Toolchain (without parser) took 9176.04 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 784.3 MB). Free memory was 276.3 MB in the beginning and 908.2 MB in the end (delta: -631.9 MB). Peak memory consumption was 153.0 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:41,673 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:19:41,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 873.92 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 245.0 MB in the end (delta: 30.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:41,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.63 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 243.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:41,680 INFO L168 Benchmark]: Boogie Preprocessor took 29.62 ms. Allocated memory is still 302.0 MB. Free memory was 243.0 MB in the beginning and 241.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:19:41,681 INFO L168 Benchmark]: RCFGBuilder took 515.06 ms. Allocated memory is still 302.0 MB. Free memory was 241.7 MB in the beginning and 263.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:41,687 INFO L168 Benchmark]: TraceAbstraction took 7659.63 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 784.3 MB). Free memory was 262.8 MB in the beginning and 908.2 MB in the end (delta: -645.4 MB). Peak memory consumption was 137.9 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:41,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 873.92 ms. Allocated memory is still 302.0 MB. Free memory was 275.6 MB in the beginning and 245.0 MB in the end (delta: 30.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 81.63 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 243.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.62 ms. Allocated memory is still 302.0 MB. Free memory was 243.0 MB in the beginning and 241.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 515.06 ms. Allocated memory is still 302.0 MB. Free memory was 241.7 MB in the beginning and 263.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7659.63 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 784.3 MB). Free memory was 262.8 MB in the beginning and 908.2 MB in the end (delta: -645.4 MB). Peak memory consumption was 137.9 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 721 SDtfs, 822 SDslu, 2660 SDs, 0 SdLazy, 335 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34478occurred 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: 0.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 496 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 514 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 60271 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...