/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:37:33,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:37:33,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:37:33,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:37:33,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:37:33,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:37:33,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:37:33,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:37:33,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:37:33,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:37:33,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:37:33,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:37:33,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:37:33,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:37:33,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:37:33,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:37:33,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:37:33,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:37:33,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:37:33,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:37:33,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:37:33,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:37:33,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:37:33,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:37:33,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:37:33,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:37:33,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:37:33,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:37:33,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:37:33,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:37:33,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:37:33,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:37:33,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:37:33,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:37:33,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:37:33,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:37:33,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:37:33,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:37:33,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:37:33,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:37:33,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:37:33,783 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-SemanticLbe.epf [2020-11-11 23:37:33,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:37:33,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:37:33,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:37:33,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:37:33,844 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:37:33,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:37:33,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:37:33,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:37:33,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:37:33,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:37:33,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:37:33,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:37:33,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:37:33,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:37:33,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:37:33,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:37:33,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:37:33,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:37:33,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:37:33,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:37:33,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:37:33,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:37:33,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:37:33,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:37:33,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:37:33,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:37:33,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:37:33,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:37:33,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:37:34,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:37:34,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:37:34,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:37:34,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:37:34,340 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:37:34,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-11-11 23:37:34,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade046bfc/d328858a27c94ec29cb6f29d03cf48d4/FLAG672d9a39b [2020-11-11 23:37:35,039 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:37:35,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2020-11-11 23:37:35,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade046bfc/d328858a27c94ec29cb6f29d03cf48d4/FLAG672d9a39b [2020-11-11 23:37:35,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ade046bfc/d328858a27c94ec29cb6f29d03cf48d4 [2020-11-11 23:37:35,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:37:35,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:37:35,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:37:35,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:37:35,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:37:35,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:37:35" (1/1) ... [2020-11-11 23:37:35,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ed7854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:35, skipping insertion in model container [2020-11-11 23:37:35,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:37:35" (1/1) ... [2020-11-11 23:37:35,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:37:35,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:37:35,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:37:35,965 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:37:36,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:37:36,188 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:37:36,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36 WrapperNode [2020-11-11 23:37:36,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:37:36,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:37:36,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:37:36,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:37:36,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:37:36,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:37:36,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:37:36,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:37:36,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... [2020-11-11 23:37:36,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:37:36,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:37:36,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:37:36,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:37:36,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:37:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:37:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:37:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:37:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:37:36,439 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:37:36,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:37:36,440 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:37:36,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:37:36,441 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:37:36,442 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:37:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:37:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:37:36,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:37:36,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:37:36,445 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 23:37:36,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:37:36,935 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:37:36,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:37:36 BoogieIcfgContainer [2020-11-11 23:37:36,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:37:36,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:37:36,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:37:36,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:37:36,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:37:35" (1/3) ... [2020-11-11 23:37:36,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef95049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:37:36, skipping insertion in model container [2020-11-11 23:37:36,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:37:36" (2/3) ... [2020-11-11 23:37:36,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef95049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:37:36, skipping insertion in model container [2020-11-11 23:37:36,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:37:36" (3/3) ... [2020-11-11 23:37:36,947 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2020-11-11 23:37:36,965 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:37:36,965 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:37:36,969 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:37:36,970 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:37:37,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,011 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,011 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,018 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,020 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,021 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,021 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,029 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,029 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,030 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,030 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,034 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,034 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,034 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,035 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:37:37,039 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:37:37,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:37:37,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:37:37,076 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:37:37,076 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:37:37,076 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:37:37,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:37:37,077 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:37:37,077 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:37:37,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:37:37,090 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:37:37,092 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:37:37,095 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-11 23:37:37,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 23:37:37,144 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-11 23:37:37,144 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:37:37,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:37:37,152 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:37:39,969 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:37:40,544 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:37:40,663 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-11 23:37:40,926 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-11 23:37:41,149 INFO L131 LiptonReduction]: Checked pairs total: 2870 [2020-11-11 23:37:41,149 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-11 23:37:41,159 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-11 23:37:41,213 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:37:41,226 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:41,227 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:41,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:41,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2120671033, now seen corresponding path program 1 times [2020-11-11 23:37:41,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:41,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663845165] [2020-11-11 23:37:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:37:41,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663845165] [2020-11-11 23:37:41,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:41,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:37:41,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816240694] [2020-11-11 23:37:41,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-11 23:37:41,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-11 23:37:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:37:41,474 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:41,509 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-11 23:37:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-11 23:37:41,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2020-11-11 23:37:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:41,529 INFO L225 Difference]: With dead ends: 362 [2020-11-11 23:37:41,529 INFO L226 Difference]: Without dead ends: 298 [2020-11-11 23:37:41,531 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-11 23:37:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-11 23:37:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-11 23:37:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-11 23:37:41,622 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-11 23:37:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:41,624 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-11 23:37:41,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-11 23:37:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:37:41,626 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:41,626 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:41,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:37:41,626 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:41,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:41,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1316261025, now seen corresponding path program 1 times [2020-11-11 23:37:41,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:41,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110191546] [2020-11-11 23:37:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:37:41,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110191546] [2020-11-11 23:37:41,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:41,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:37:41,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325974738] [2020-11-11 23:37:41,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:37:41,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:41,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:37:41,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:37:41,804 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:41,865 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-11 23:37:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:37:41,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2020-11-11 23:37:41,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:41,873 INFO L225 Difference]: With dead ends: 330 [2020-11-11 23:37:41,874 INFO L226 Difference]: Without dead ends: 266 [2020-11-11 23:37:41,877 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-11 23:37:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-11 23:37:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.8377358490566036) internal successors, (752), 265 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-11 23:37:41,926 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-11 23:37:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:41,926 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-11 23:37:41,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-11 23:37:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:37:41,928 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:41,928 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:41,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:37:41,929 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:41,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1092775218, now seen corresponding path program 1 times [2020-11-11 23:37:41,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:41,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424925442] [2020-11-11 23:37:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:37:42,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424925442] [2020-11-11 23:37:42,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:42,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:37:42,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372957437] [2020-11-11 23:37:42,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:37:42,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:42,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:37:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:42,100 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:42,203 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-11-11 23:37:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:37:42,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2020-11-11 23:37:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:42,208 INFO L225 Difference]: With dead ends: 290 [2020-11-11 23:37:42,208 INFO L226 Difference]: Without dead ends: 242 [2020-11-11 23:37:42,209 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:37:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-11 23:37:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-11-11 23:37:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.780082987551867) internal successors, (670), 241 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-11-11 23:37:42,240 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-11-11 23:37:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:42,240 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-11-11 23:37:42,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-11-11 23:37:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:37:42,244 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:42,245 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:42,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:37:42,245 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:42,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1615070613, now seen corresponding path program 1 times [2020-11-11 23:37:42,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:42,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564204097] [2020-11-11 23:37:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:37:42,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564204097] [2020-11-11 23:37:42,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:42,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:37:42,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545063732] [2020-11-11 23:37:42,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:37:42,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:42,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:37:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:37:42,333 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:42,366 INFO L93 Difference]: Finished difference Result 266 states and 707 transitions. [2020-11-11 23:37:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:37:42,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2020-11-11 23:37:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:42,369 INFO L225 Difference]: With dead ends: 266 [2020-11-11 23:37:42,369 INFO L226 Difference]: Without dead ends: 230 [2020-11-11 23:37:42,370 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-11 23:37:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-11 23:37:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.7336244541484715) internal successors, (626), 229 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 626 transitions. [2020-11-11 23:37:42,380 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 626 transitions. Word has length 11 [2020-11-11 23:37:42,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:42,380 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 626 transitions. [2020-11-11 23:37:42,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 626 transitions. [2020-11-11 23:37:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:37:42,382 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:42,383 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:42,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:37:42,383 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:42,384 INFO L82 PathProgramCache]: Analyzing trace with hash -260157625, now seen corresponding path program 1 times [2020-11-11 23:37:42,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:42,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974625534] [2020-11-11 23:37:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:37:42,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974625534] [2020-11-11 23:37:42,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:42,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:37:42,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790489628] [2020-11-11 23:37:42,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:37:42,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:42,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:37:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:42,471 INFO L87 Difference]: Start difference. First operand 230 states and 626 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:42,541 INFO L93 Difference]: Finished difference Result 300 states and 791 transitions. [2020-11-11 23:37:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:37:42,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2020-11-11 23:37:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:42,544 INFO L225 Difference]: With dead ends: 300 [2020-11-11 23:37:42,544 INFO L226 Difference]: Without dead ends: 150 [2020-11-11 23:37:42,545 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-11 23:37:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-11 23:37:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-11 23:37:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.469798657718121) internal successors, (368), 149 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 368 transitions. [2020-11-11 23:37:42,551 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 368 transitions. Word has length 12 [2020-11-11 23:37:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:42,552 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 368 transitions. [2020-11-11 23:37:42,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 368 transitions. [2020-11-11 23:37:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:37:42,553 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:42,553 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:42,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:37:42,553 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash -825504203, now seen corresponding path program 1 times [2020-11-11 23:37:42,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:42,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578566264] [2020-11-11 23:37:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:37:42,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578566264] [2020-11-11 23:37:42,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:42,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:37:42,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944432525] [2020-11-11 23:37:42,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:37:42,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:42,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:37:42,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:37:42,615 INFO L87 Difference]: Start difference. First operand 150 states and 368 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:42,657 INFO L93 Difference]: Finished difference Result 190 states and 456 transitions. [2020-11-11 23:37:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:37:42,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2020-11-11 23:37:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:42,659 INFO L225 Difference]: With dead ends: 190 [2020-11-11 23:37:42,659 INFO L226 Difference]: Without dead ends: 74 [2020-11-11 23:37:42,659 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:37:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-11 23:37:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-11 23:37:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 73 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-11-11 23:37:42,663 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 13 [2020-11-11 23:37:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:42,663 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-11-11 23:37:42,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-11-11 23:37:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:37:42,664 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:37:42,664 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:37:42,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:37:42,664 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:37:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:37:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1723208835, now seen corresponding path program 1 times [2020-11-11 23:37:42,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:37:42,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63804823] [2020-11-11 23:37:42,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:37:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:37:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 23:37:42,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63804823] [2020-11-11 23:37:42,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:37:42,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:37:42,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351937531] [2020-11-11 23:37:42,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:37:42,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:37:42,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:37:42,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:37:42,744 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:37:42,844 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-11-11 23:37:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:37:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2020-11-11 23:37:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:37:42,845 INFO L225 Difference]: With dead ends: 62 [2020-11-11 23:37:42,846 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:37:42,846 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-11 23:37:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:37:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:37:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:37:42,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-11 23:37:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:37:42,847 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:37:42,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:37:42,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:37:42,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:37:42,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:37:42,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:37:42 BasicIcfg [2020-11-11 23:37:42,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:37:42,854 INFO L168 Benchmark]: Toolchain (without parser) took 7504.15 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 277.1 MB in the beginning and 339.1 MB in the end (delta: -62.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:42,854 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:37:42,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 834.37 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 245.4 MB in the end (delta: 31.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:42,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.70 ms. Allocated memory is still 302.0 MB. Free memory was 245.4 MB in the beginning and 243.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:42,857 INFO L168 Benchmark]: Boogie Preprocessor took 63.81 ms. Allocated memory is still 302.0 MB. Free memory was 243.4 MB in the beginning and 284.9 MB in the end (delta: -41.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:42,857 INFO L168 Benchmark]: RCFGBuilder took 588.29 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 261.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:37:42,858 INFO L168 Benchmark]: TraceAbstraction took 5912.29 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 261.8 MB in the beginning and 339.1 MB in the end (delta: -77.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:37:42,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 834.37 ms. Allocated memory is still 302.0 MB. Free memory was 276.4 MB in the beginning and 245.4 MB in the end (delta: 31.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 91.70 ms. Allocated memory is still 302.0 MB. Free memory was 245.4 MB in the beginning and 243.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 63.81 ms. Allocated memory is still 302.0 MB. Free memory was 243.4 MB in the beginning and 284.9 MB in the end (delta: -41.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 588.29 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 261.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5912.29 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 261.8 MB in the beginning and 339.1 MB in the end (delta: -77.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 993 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2870 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 142 SDtfs, 165 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 2995 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...