/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:04:39,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:04:39,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:04:39,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:04:39,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:04:39,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:04:39,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:04:39,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:04:39,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:04:39,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:04:39,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:04:39,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:04:39,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:04:39,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:04:39,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:04:39,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:04:39,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:04:39,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:04:39,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:04:39,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:04:39,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:04:39,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:04:39,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:04:39,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:04:39,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:04:39,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:04:39,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:04:39,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:04:39,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:04:39,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:04:39,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:04:39,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:04:39,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:04:39,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:04:39,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:04:39,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:04:39,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 18:04:39,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:04:39,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:04:39,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:04:39,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:04:39,431 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:04:39,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:04:39,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:04:39,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:04:39,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:04:39,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:04:39,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:04:39,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:04:39,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:04:39,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:04:39,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:04:39,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:04:39,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:04:39,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:04:39,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:04:39,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:04:39,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:04:39,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:04:39,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:04:39,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:04:39,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:04:39,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:04:39,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:04:39,438 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:04:39,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:04:39,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:04:39,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:04:39,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:04:39,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:04:39,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:04:39,876 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:04:39,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-11-11 18:04:39,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925ec9eeb/422ce533d59e4fe98cec74dbba55618e/FLAGea78ad533 [2020-11-11 18:04:40,692 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:04:40,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-11-11 18:04:40,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925ec9eeb/422ce533d59e4fe98cec74dbba55618e/FLAGea78ad533 [2020-11-11 18:04:40,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925ec9eeb/422ce533d59e4fe98cec74dbba55618e [2020-11-11 18:04:40,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:04:40,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:04:40,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:04:40,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:04:40,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:04:40,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:04:40" (1/1) ... [2020-11-11 18:04:40,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ee4f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:40, skipping insertion in model container [2020-11-11 18:04:40,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:04:40" (1/1) ... [2020-11-11 18:04:41,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:04:41,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:04:41,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:04:41,606 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:04:41,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:04:41,771 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:04:41,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41 WrapperNode [2020-11-11 18:04:41,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:04:41,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:04:41,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:04:41,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:04:41,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:04:41,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:04:41,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:04:41,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:04:41,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... [2020-11-11 18:04:41,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:04:41,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:04:41,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:04:41,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:04:41,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:04:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:04:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:04:41,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:04:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:04:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:04:41,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:04:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:04:41,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:04:41,987 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:04:41,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:04:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:04:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:04:41,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:04:41,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:04:41,990 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:04:42,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:04:42,526 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:04:42,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:04:42 BoogieIcfgContainer [2020-11-11 18:04:42,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:04:42,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:04:42,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:04:42,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:04:42,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:04:40" (1/3) ... [2020-11-11 18:04:42,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391f4128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:04:42, skipping insertion in model container [2020-11-11 18:04:42,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:04:41" (2/3) ... [2020-11-11 18:04:42,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391f4128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:04:42, skipping insertion in model container [2020-11-11 18:04:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:04:42" (3/3) ... [2020-11-11 18:04:42,543 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-11-11 18:04:42,561 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:04:42,561 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:04:42,565 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:04:42,567 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:04:42,618 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,618 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,618 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,618 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,619 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,619 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,619 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,620 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,620 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,620 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,622 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,625 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,629 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,630 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,632 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,649 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,650 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,664 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:04:42,677 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:04:42,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:04:42,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:04:42,728 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:04:42,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:04:42,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:04:42,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:04:42,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:04:42,729 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:04:42,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:04:42,740 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 18:04:43,730 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) [2020-11-11 18:04:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2020-11-11 18:04:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-11 18:04:43,829 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:43,830 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] [2020-11-11 18:04:43,831 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -578983952, now seen corresponding path program 1 times [2020-11-11 18:04:43,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:43,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219053885] [2020-11-11 18:04:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:44,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219053885] [2020-11-11 18:04:44,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:44,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:04:44,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159537886] [2020-11-11 18:04:44,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:04:44,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:44,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:04:44,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:04:44,386 INFO L87 Difference]: Start difference. First operand 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) 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) [2020-11-11 18:04:44,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:44,771 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2020-11-11 18:04:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:04:44,774 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 [2020-11-11 18:04:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:44,837 INFO L225 Difference]: With dead ends: 12199 [2020-11-11 18:04:44,838 INFO L226 Difference]: Without dead ends: 4604 [2020-11-11 18:04:44,840 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:04:44,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2020-11-11 18:04:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4604. [2020-11-11 18:04:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4603 states have (on average 3.4158157723223983) internal successors, (15723), 4603 states have internal predecessors, (15723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 15723 transitions. [2020-11-11 18:04:45,326 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 15723 transitions. Word has length 41 [2020-11-11 18:04:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:45,328 INFO L481 AbstractCegarLoop]: Abstraction has 4604 states and 15723 transitions. [2020-11-11 18:04:45,328 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) [2020-11-11 18:04:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 15723 transitions. [2020-11-11 18:04:45,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-11 18:04:45,342 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:45,343 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:45,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:04:45,344 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1767731663, now seen corresponding path program 1 times [2020-11-11 18:04:45,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:45,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752260969] [2020-11-11 18:04:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:45,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752260969] [2020-11-11 18:04:45,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:45,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:04:45,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157119071] [2020-11-11 18:04:45,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:04:45,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:45,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:04:45,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:04:45,559 INFO L87 Difference]: Start difference. First operand 4604 states and 15723 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) [2020-11-11 18:04:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:45,789 INFO L93 Difference]: Finished difference Result 5344 states and 18040 transitions. [2020-11-11 18:04:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:04:45,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-11-11 18:04:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:45,829 INFO L225 Difference]: With dead ends: 5344 [2020-11-11 18:04:45,830 INFO L226 Difference]: Without dead ends: 4364 [2020-11-11 18:04:45,830 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 [2020-11-11 18:04:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2020-11-11 18:04:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4364. [2020-11-11 18:04:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4364 states, 4363 states have (on average 3.3946825578730233) internal successors, (14811), 4363 states have internal predecessors, (14811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 14811 transitions. [2020-11-11 18:04:46,009 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 14811 transitions. Word has length 43 [2020-11-11 18:04:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:46,010 INFO L481 AbstractCegarLoop]: Abstraction has 4364 states and 14811 transitions. [2020-11-11 18:04:46,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 14811 transitions. [2020-11-11 18:04:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:04:46,022 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:46,022 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:46,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:04:46,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:46,024 INFO L82 PathProgramCache]: Analyzing trace with hash 280082414, now seen corresponding path program 1 times [2020-11-11 18:04:46,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:46,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726547686] [2020-11-11 18:04:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:46,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726547686] [2020-11-11 18:04:46,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:46,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:04:46,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521638655] [2020-11-11 18:04:46,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:04:46,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:46,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:04:46,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:04:46,289 INFO L87 Difference]: Start difference. First operand 4364 states and 14811 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:46,467 INFO L93 Difference]: Finished difference Result 4880 states and 16363 transitions. [2020-11-11 18:04:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:04:46,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-11 18:04:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:46,505 INFO L225 Difference]: With dead ends: 4880 [2020-11-11 18:04:46,505 INFO L226 Difference]: Without dead ends: 4020 [2020-11-11 18:04:46,506 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:04:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2020-11-11 18:04:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 4020. [2020-11-11 18:04:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 3.370738989798457) internal successors, (13547), 4019 states have internal predecessors, (13547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 13547 transitions. [2020-11-11 18:04:46,756 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 13547 transitions. Word has length 45 [2020-11-11 18:04:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:46,756 INFO L481 AbstractCegarLoop]: Abstraction has 4020 states and 13547 transitions. [2020-11-11 18:04:46,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 13547 transitions. [2020-11-11 18:04:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-11 18:04:46,769 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:46,769 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] [2020-11-11 18:04:46,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:04:46,769 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1176584974, now seen corresponding path program 1 times [2020-11-11 18:04:46,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:46,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348902256] [2020-11-11 18:04:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:46,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348902256] [2020-11-11 18:04:46,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:46,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:04:46,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554061113] [2020-11-11 18:04:46,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:04:46,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:46,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:04:46,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:04:46,944 INFO L87 Difference]: Start difference. First operand 4020 states and 13547 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) [2020-11-11 18:04:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:47,179 INFO L93 Difference]: Finished difference Result 5848 states and 19614 transitions. [2020-11-11 18:04:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:04:47,180 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 [2020-11-11 18:04:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:47,209 INFO L225 Difference]: With dead ends: 5848 [2020-11-11 18:04:47,210 INFO L226 Difference]: Without dead ends: 3788 [2020-11-11 18:04:47,210 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:04:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-11-11 18:04:47,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3788. [2020-11-11 18:04:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 3787 states have (on average 3.342751518352258) internal successors, (12659), 3787 states have internal predecessors, (12659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 12659 transitions. [2020-11-11 18:04:47,404 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 12659 transitions. Word has length 46 [2020-11-11 18:04:47,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:47,405 INFO L481 AbstractCegarLoop]: Abstraction has 3788 states and 12659 transitions. [2020-11-11 18:04:47,405 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) [2020-11-11 18:04:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 12659 transitions. [2020-11-11 18:04:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:04:47,416 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:47,416 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:47,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:04:47,416 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:47,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:47,417 INFO L82 PathProgramCache]: Analyzing trace with hash 969736422, now seen corresponding path program 1 times [2020-11-11 18:04:47,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:47,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51155223] [2020-11-11 18:04:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:47,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51155223] [2020-11-11 18:04:47,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:47,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:04:47,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059895512] [2020-11-11 18:04:47,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:04:47,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:47,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:04:47,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:04:47,535 INFO L87 Difference]: Start difference. First operand 3788 states and 12659 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:47,751 INFO L93 Difference]: Finished difference Result 7040 states and 23090 transitions. [2020-11-11 18:04:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:04:47,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-11 18:04:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:47,769 INFO L225 Difference]: With dead ends: 7040 [2020-11-11 18:04:47,770 INFO L226 Difference]: Without dead ends: 4152 [2020-11-11 18:04:47,770 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:04:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2020-11-11 18:04:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 2952. [2020-11-11 18:04:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2951 states have (on average 3.2392409352761775) internal successors, (9559), 2951 states have internal predecessors, (9559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 9559 transitions. [2020-11-11 18:04:47,964 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 9559 transitions. Word has length 47 [2020-11-11 18:04:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:47,964 INFO L481 AbstractCegarLoop]: Abstraction has 2952 states and 9559 transitions. [2020-11-11 18:04:47,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 9559 transitions. [2020-11-11 18:04:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:04:47,974 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:47,974 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:47,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:04:47,975 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:47,975 INFO L82 PathProgramCache]: Analyzing trace with hash -991149868, now seen corresponding path program 1 times [2020-11-11 18:04:47,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:47,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642985252] [2020-11-11 18:04:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:48,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642985252] [2020-11-11 18:04:48,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:48,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:04:48,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704956779] [2020-11-11 18:04:48,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:04:48,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:48,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:04:48,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:04:48,142 INFO L87 Difference]: Start difference. First operand 2952 states and 9559 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:48,275 INFO L93 Difference]: Finished difference Result 4024 states and 12911 transitions. [2020-11-11 18:04:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:04:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-11 18:04:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:48,283 INFO L225 Difference]: With dead ends: 4024 [2020-11-11 18:04:48,283 INFO L226 Difference]: Without dead ends: 1801 [2020-11-11 18:04:48,283 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 [2020-11-11 18:04:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2020-11-11 18:04:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1801. [2020-11-11 18:04:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 3.1655555555555557) internal successors, (5698), 1800 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 5698 transitions. [2020-11-11 18:04:48,344 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 5698 transitions. Word has length 47 [2020-11-11 18:04:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:48,344 INFO L481 AbstractCegarLoop]: Abstraction has 1801 states and 5698 transitions. [2020-11-11 18:04:48,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 5698 transitions. [2020-11-11 18:04:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:04:48,350 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:48,350 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:48,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:04:48,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash 608113037, now seen corresponding path program 1 times [2020-11-11 18:04:48,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:48,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39347634] [2020-11-11 18:04:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:48,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39347634] [2020-11-11 18:04:48,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:48,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:04:48,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497507479] [2020-11-11 18:04:48,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:04:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:04:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:04:48,517 INFO L87 Difference]: Start difference. First operand 1801 states and 5698 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:48,739 INFO L93 Difference]: Finished difference Result 2261 states and 7082 transitions. [2020-11-11 18:04:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:04:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-11 18:04:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:48,747 INFO L225 Difference]: With dead ends: 2261 [2020-11-11 18:04:48,747 INFO L226 Difference]: Without dead ends: 1645 [2020-11-11 18:04:48,748 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:04:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-11-11 18:04:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1645. [2020-11-11 18:04:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 3.1411192214111923) internal successors, (5164), 1644 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 5164 transitions. [2020-11-11 18:04:48,814 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 5164 transitions. Word has length 49 [2020-11-11 18:04:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:48,814 INFO L481 AbstractCegarLoop]: Abstraction has 1645 states and 5164 transitions. [2020-11-11 18:04:48,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 5164 transitions. [2020-11-11 18:04:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:04:48,820 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:48,820 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:48,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:04:48,821 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:48,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1984353874, now seen corresponding path program 1 times [2020-11-11 18:04:48,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:48,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668487225] [2020-11-11 18:04:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:48,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668487225] [2020-11-11 18:04:48,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:48,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:04:48,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980997532] [2020-11-11 18:04:48,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:04:48,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:48,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:04:48,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:04:48,977 INFO L87 Difference]: Start difference. First operand 1645 states and 5164 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:49,154 INFO L93 Difference]: Finished difference Result 1804 states and 5531 transitions. [2020-11-11 18:04:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:04:49,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-11 18:04:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:49,160 INFO L225 Difference]: With dead ends: 1804 [2020-11-11 18:04:49,161 INFO L226 Difference]: Without dead ends: 1300 [2020-11-11 18:04:49,161 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:04:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2020-11-11 18:04:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2020-11-11 18:04:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.0361816782140107) internal successors, (3944), 1299 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 3944 transitions. [2020-11-11 18:04:49,209 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 3944 transitions. Word has length 50 [2020-11-11 18:04:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:49,209 INFO L481 AbstractCegarLoop]: Abstraction has 1300 states and 3944 transitions. [2020-11-11 18:04:49,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 3944 transitions. [2020-11-11 18:04:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:04:49,214 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:49,214 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:49,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:04:49,214 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash -126840041, now seen corresponding path program 1 times [2020-11-11 18:04:49,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:49,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209785883] [2020-11-11 18:04:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:49,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209785883] [2020-11-11 18:04:49,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:49,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:04:49,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299958699] [2020-11-11 18:04:49,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:04:49,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:49,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:04:49,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:04:49,329 INFO L87 Difference]: Start difference. First operand 1300 states and 3944 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) [2020-11-11 18:04:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:49,517 INFO L93 Difference]: Finished difference Result 1066 states and 3101 transitions. [2020-11-11 18:04:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:04:49,518 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 [2020-11-11 18:04:49,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:49,520 INFO L225 Difference]: With dead ends: 1066 [2020-11-11 18:04:49,521 INFO L226 Difference]: Without dead ends: 742 [2020-11-11 18:04:49,521 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:04:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-11-11 18:04:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2020-11-11 18:04:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 2.8124156545209176) internal successors, (2084), 741 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 2084 transitions. [2020-11-11 18:04:49,541 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 2084 transitions. Word has length 51 [2020-11-11 18:04:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:49,542 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 2084 transitions. [2020-11-11 18:04:49,542 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) [2020-11-11 18:04:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 2084 transitions. [2020-11-11 18:04:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:04:49,544 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:04:49,544 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:04:49,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 18:04:49,545 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:04:49,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:04:49,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1190692008, now seen corresponding path program 1 times [2020-11-11 18:04:49,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:04:49,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306057573] [2020-11-11 18:04:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:04:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:04:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:04:49,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306057573] [2020-11-11 18:04:49,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:04:49,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:04:49,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638454126] [2020-11-11 18:04:49,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:04:49,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:04:49,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:04:49,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:04:49,620 INFO L87 Difference]: Start difference. First operand 742 states and 2084 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:04:49,676 INFO L93 Difference]: Finished difference Result 634 states and 1760 transitions. [2020-11-11 18:04:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 18:04:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-11 18:04:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:04:49,677 INFO L225 Difference]: With dead ends: 634 [2020-11-11 18:04:49,677 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:04:49,678 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-11 18:04:49,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:04:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:04:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:04:49,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-11 18:04:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:04:49,679 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:04:49,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:04:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:04:49,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:04:49,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 18:04:49,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:04:49 BasicIcfg [2020-11-11 18:04:49,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:04:49,687 INFO L168 Benchmark]: Toolchain (without parser) took 8714.14 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 926.9 MB). Free memory was 276.3 MB in the beginning and 1.0 GB in the end (delta: -730.4 MB). Peak memory consumption was 198.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:04:49,688 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:04:49,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.89 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 244.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:04:49,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.61 ms. Allocated memory is still 302.0 MB. Free memory was 244.8 MB in the beginning and 284.6 MB in the end (delta: -39.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2020-11-11 18:04:49,690 INFO L168 Benchmark]: Boogie Preprocessor took 32.04 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:04:49,691 INFO L168 Benchmark]: RCFGBuilder took 626.38 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 260.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:04:49,692 INFO L168 Benchmark]: TraceAbstraction took 7151.46 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 926.9 MB). Free memory was 260.5 MB in the beginning and 1.0 GB in the end (delta: -746.2 MB). Peak memory consumption was 182.9 MB. Max. memory is 16.0 GB. [2020-11-11 18:04:49,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 789.89 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 244.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 97.61 ms. Allocated memory is still 302.0 MB. Free memory was 244.8 MB in the beginning and 284.6 MB in the end (delta: -39.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.04 ms. Allocated memory is still 302.0 MB. Free memory was 284.6 MB in the beginning and 283.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 626.38 ms. Allocated memory is still 302.0 MB. Free memory was 283.5 MB in the beginning and 260.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7151.46 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 926.9 MB). Free memory was 260.5 MB in the beginning and 1.0 GB in the end (delta: -746.2 MB). Peak memory consumption was 182.9 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: 6.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 990 SDtfs, 1213 SDslu, 3094 SDs, 0 SdLazy, 352 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 1200 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 56632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...