/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-Delay.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 06:19:07,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 06:19:07,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 06:19:07,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 06:19:07,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 06:19:07,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 06:19:07,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 06:19:07,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 06:19:07,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 06:19:07,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 06:19:07,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 06:19:07,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 06:19:07,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 06:19:07,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 06:19:07,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 06:19:07,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 06:19:07,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 06:19:07,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 06:19:07,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 06:19:07,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 06:19:07,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 06:19:07,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 06:19:07,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 06:19:07,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 06:19:07,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 06:19:07,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 06:19:07,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 06:19:07,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 06:19:07,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 06:19:07,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 06:19:07,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 06:19:07,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 06:19:07,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 06:19:07,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 06:19:07,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 06:19:07,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 06:19:07,459 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-Delay.epf [2020-11-12 06:19:07,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 06:19:07,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 06:19:07,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 06:19:07,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 06:19:07,521 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 06:19:07,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 06:19:07,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 06:19:07,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 06:19:07,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 06:19:07,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 06:19:07,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 06:19:07,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 06:19:07,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 06:19:07,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 06:19:07,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 06:19:07,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 06:19:07,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 06:19:07,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 06:19:07,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 06:19:07,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 06:19:07,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 06:19:07,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:19:07,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 06:19:07,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 06:19:07,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 06:19:07,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 06:19:07,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 06:19:07,526 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 06:19:07,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 06:19:07,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 06:19:07,527 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 06:19:07,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 06:19:07,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 06:19:07,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 06:19:07,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 06:19:07,932 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 06:19:07,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-12 06:19:08,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2973158a7/3a905fb447954cb59bfb61b2f580937a/FLAGcef59e837 [2020-11-12 06:19:08,894 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 06:19:08,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-12 06:19:08,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2973158a7/3a905fb447954cb59bfb61b2f580937a/FLAGcef59e837 [2020-11-12 06:19:09,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2973158a7/3a905fb447954cb59bfb61b2f580937a [2020-11-12 06:19:09,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 06:19:09,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 06:19:09,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 06:19:09,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 06:19:09,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 06:19:09,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56547e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09, skipping insertion in model container [2020-11-12 06:19:09,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 06:19:09,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 06:19:09,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:19:09,642 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 06:19:09,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:19:09,860 INFO L208 MainTranslator]: Completed translation [2020-11-12 06:19:09,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09 WrapperNode [2020-11-12 06:19:09,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 06:19:09,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 06:19:09,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 06:19:09,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 06:19:09,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 06:19:09,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 06:19:09,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 06:19:09,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 06:19:09,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... [2020-11-12 06:19:09,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 06:19:09,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 06:19:09,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 06:19:09,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 06:19:09,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:19:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 06:19:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 06:19:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 06:19:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 06:19:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 06:19:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 06:19:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 06:19:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 06:19:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 06:19:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 06:19:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 06:19:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 06:19:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 06:19:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 06:19:10,040 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 06:19:10,633 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 06:19:10,634 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 06:19:10,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:19:10 BoogieIcfgContainer [2020-11-12 06:19:10,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 06:19:10,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 06:19:10,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 06:19:10,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 06:19:10,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:19:09" (1/3) ... [2020-11-12 06:19:10,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ad0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:19:10, skipping insertion in model container [2020-11-12 06:19:10,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:19:09" (2/3) ... [2020-11-12 06:19:10,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ad0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:19:10, skipping insertion in model container [2020-11-12 06:19:10,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:19:10" (3/3) ... [2020-11-12 06:19:10,648 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-11-12 06:19:10,669 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 06:19:10,669 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 06:19:10,674 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 06:19:10,675 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 06:19:10,726 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,728 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,729 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,734 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,735 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,735 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,738 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,739 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,759 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,760 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,767 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,767 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,768 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,771 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,771 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,771 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,772 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:19:10,774 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 06:19:10,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 06:19:10,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 06:19:10,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 06:19:10,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 06:19:10,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 06:19:10,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 06:19:10,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 06:19:10,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 06:19:10,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 06:19:10,828 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 06:19:11,610 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:12,095 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 482ms [2020-11-12 06:19:12,123 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:12,136 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 8448 states, 7643 states have (on average 1.427319115530551) internal successors, (10909), 8447 states have internal predecessors, (10909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 8448 states, 7643 states have (on average 1.427319115530551) internal successors, (10909), 8447 states have internal predecessors, (10909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 06:19:12,169 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:19:12,170 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:19:12,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:19:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:19:12,178 INFO L82 PathProgramCache]: Analyzing trace with hash 31988960, now seen corresponding path program 1 times [2020-11-12 06:19:12,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:19:12,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657541363] [2020-11-12 06:19:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:19:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:19:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:19:12,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657541363] [2020-11-12 06:19:12,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:19:12,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:19:12,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035380569] [2020-11-12 06:19:12,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:19:12,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:19:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:19:12,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:19:12,747 INFO L87 Difference]: Start difference. First operand has 8448 states, 7643 states have (on average 1.427319115530551) internal successors, (10909), 8447 states have internal predecessors, (10909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:19:13,002 INFO L93 Difference]: Finished difference Result 10464 states and 12267 transitions. [2020-11-12 06:19:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:19:13,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-12 06:19:13,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:19:13,042 INFO L225 Difference]: With dead ends: 10464 [2020-11-12 06:19:13,042 INFO L226 Difference]: Without dead ends: 3015 [2020-11-12 06:19:13,044 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:19:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-11-12 06:19:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3015. [2020-11-12 06:19:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2805 states have (on average 1.530837789661319) internal successors, (4294), 3014 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4294 transitions. [2020-11-12 06:19:13,267 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4294 transitions. Word has length 42 [2020-11-12 06:19:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:19:13,267 INFO L481 AbstractCegarLoop]: Abstraction has 3015 states and 4294 transitions. [2020-11-12 06:19:13,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4294 transitions. [2020-11-12 06:19:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 06:19:13,274 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:19:13,275 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:19:13,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 06:19:13,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:19:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:19:13,276 INFO L82 PathProgramCache]: Analyzing trace with hash -95647071, now seen corresponding path program 1 times [2020-11-12 06:19:13,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:19:13,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465209147] [2020-11-12 06:19:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:19:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:19:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:19:13,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465209147] [2020-11-12 06:19:13,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:19:13,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:19:13,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248215804] [2020-11-12 06:19:13,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:19:13,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:19:13,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:19:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:19:13,501 INFO L87 Difference]: Start difference. First operand 3015 states and 4294 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:19:13,676 INFO L93 Difference]: Finished difference Result 3615 states and 5482 transitions. [2020-11-12 06:19:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:19:13,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 06:19:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:19:13,685 INFO L225 Difference]: With dead ends: 3615 [2020-11-12 06:19:13,686 INFO L226 Difference]: Without dead ends: 1610 [2020-11-12 06:19:13,687 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 06:19:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-11-12 06:19:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1610. [2020-11-12 06:19:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1490 states have (on average 1.518791946308725) internal successors, (2263), 1609 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2263 transitions. [2020-11-12 06:19:13,735 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2263 transitions. Word has length 44 [2020-11-12 06:19:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:19:13,735 INFO L481 AbstractCegarLoop]: Abstraction has 1610 states and 2263 transitions. [2020-11-12 06:19:13,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2263 transitions. [2020-11-12 06:19:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:19:13,739 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:19:13,739 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:19:13,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 06:19:13,739 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:19:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:19:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1249634671, now seen corresponding path program 1 times [2020-11-12 06:19:13,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:19:13,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309228544] [2020-11-12 06:19:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:19:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:19:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:19:13,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309228544] [2020-11-12 06:19:13,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:19:13,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:19:13,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642920573] [2020-11-12 06:19:13,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:19:13,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:19:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:19:13,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:19:13,961 INFO L87 Difference]: Start difference. First operand 1610 states and 2263 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) [2020-11-12 06:19:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:19:14,137 INFO L93 Difference]: Finished difference Result 2130 states and 3230 transitions. [2020-11-12 06:19:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:19:14,137 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 [2020-11-12 06:19:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:19:14,144 INFO L225 Difference]: With dead ends: 2130 [2020-11-12 06:19:14,144 INFO L226 Difference]: Without dead ends: 1084 [2020-11-12 06:19:14,145 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 [2020-11-12 06:19:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-11-12 06:19:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1084. [2020-11-12 06:19:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1004 states have (on average 1.5557768924302788) internal successors, (1562), 1083 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1562 transitions. [2020-11-12 06:19:14,182 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1562 transitions. Word has length 47 [2020-11-12 06:19:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:19:14,182 INFO L481 AbstractCegarLoop]: Abstraction has 1084 states and 1562 transitions. [2020-11-12 06:19:14,182 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) [2020-11-12 06:19:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1562 transitions. [2020-11-12 06:19:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 06:19:14,185 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:19:14,185 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:19:14,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 06:19:14,186 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:19:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:19:14,187 INFO L82 PathProgramCache]: Analyzing trace with hash 994042126, now seen corresponding path program 1 times [2020-11-12 06:19:14,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:19:14,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368114414] [2020-11-12 06:19:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:19:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:19:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:19:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368114414] [2020-11-12 06:19:14,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:19:14,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:19:14,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142510508] [2020-11-12 06:19:14,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:19:14,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:19:14,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:19:14,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:19:14,403 INFO L87 Difference]: Start difference. First operand 1084 states and 1562 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) [2020-11-12 06:19:14,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:19:14,783 INFO L93 Difference]: Finished difference Result 1306 states and 2016 transitions. [2020-11-12 06:19:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:19:14,784 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 [2020-11-12 06:19:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:19:14,790 INFO L225 Difference]: With dead ends: 1306 [2020-11-12 06:19:14,790 INFO L226 Difference]: Without dead ends: 1042 [2020-11-12 06:19:14,791 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 [2020-11-12 06:19:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-11-12 06:19:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1042. [2020-11-12 06:19:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 964 states have (on average 1.5466804979253113) internal successors, (1491), 1041 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1491 transitions. [2020-11-12 06:19:14,820 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1491 transitions. Word has length 49 [2020-11-12 06:19:14,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:19:14,821 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1491 transitions. [2020-11-12 06:19:14,821 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) [2020-11-12 06:19:14,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1491 transitions. [2020-11-12 06:19:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 06:19:14,824 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:19:14,824 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] [2020-11-12 06:19:14,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 06:19:14,825 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:19:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:19:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1503390736, now seen corresponding path program 1 times [2020-11-12 06:19:14,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:19:14,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653479685] [2020-11-12 06:19:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:19:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:19:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:19:14,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653479685] [2020-11-12 06:19:14,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:19:14,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:19:14,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989781841] [2020-11-12 06:19:14,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:19:14,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:19:14,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:19:14,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:19:14,953 INFO L87 Difference]: Start difference. First operand 1042 states and 1491 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) [2020-11-12 06:19:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:19:15,153 INFO L93 Difference]: Finished difference Result 1051 states and 1606 transitions. [2020-11-12 06:19:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:19:15,153 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 [2020-11-12 06:19:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:19:15,158 INFO L225 Difference]: With dead ends: 1051 [2020-11-12 06:19:15,159 INFO L226 Difference]: Without dead ends: 809 [2020-11-12 06:19:15,159 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 [2020-11-12 06:19:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-11-12 06:19:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2020-11-12 06:19:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 746 states have (on average 1.5) internal successors, (1119), 808 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1119 transitions. [2020-11-12 06:19:15,183 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1119 transitions. Word has length 50 [2020-11-12 06:19:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:19:15,186 INFO L481 AbstractCegarLoop]: Abstraction has 809 states and 1119 transitions. [2020-11-12 06:19:15,187 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) [2020-11-12 06:19:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1119 transitions. [2020-11-12 06:19:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 06:19:15,190 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:19:15,191 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:19:15,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 06:19:15,191 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:19:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:19:15,192 INFO L82 PathProgramCache]: Analyzing trace with hash -632844560, now seen corresponding path program 1 times [2020-11-12 06:19:15,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:19:15,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479220644] [2020-11-12 06:19:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:19:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:19:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:19:15,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479220644] [2020-11-12 06:19:15,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:19:15,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 06:19:15,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609257557] [2020-11-12 06:19:15,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 06:19:15,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:19:15,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 06:19:15,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:19:15,398 INFO L87 Difference]: Start difference. First operand 809 states and 1119 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:15,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:19:15,606 INFO L93 Difference]: Finished difference Result 539 states and 810 transitions. [2020-11-12 06:19:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 06:19:15,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 06:19:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:19:15,609 INFO L225 Difference]: With dead ends: 539 [2020-11-12 06:19:15,610 INFO L226 Difference]: Without dead ends: 386 [2020-11-12 06:19:15,610 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 06:19:15,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-11-12 06:19:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-11-12 06:19:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 359 states have (on average 1.3983286908077994) internal successors, (502), 385 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 502 transitions. [2020-11-12 06:19:15,622 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 502 transitions. Word has length 51 [2020-11-12 06:19:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:19:15,623 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 502 transitions. [2020-11-12 06:19:15,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 502 transitions. [2020-11-12 06:19:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 06:19:15,625 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:19:15,625 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:19:15,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 06:19:15,625 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:19:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:19:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash -653822489, now seen corresponding path program 1 times [2020-11-12 06:19:15,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:19:15,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147598694] [2020-11-12 06:19:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:19:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:19:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:19:15,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147598694] [2020-11-12 06:19:15,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:19:15,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:19:15,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947079683] [2020-11-12 06:19:15,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:19:15,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:19:15,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:19:15,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:19:15,742 INFO L87 Difference]: Start difference. First operand 386 states and 502 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:19:15,835 INFO L93 Difference]: Finished difference Result 278 states and 394 transitions. [2020-11-12 06:19:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:19:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-12 06:19:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:19:15,838 INFO L225 Difference]: With dead ends: 278 [2020-11-12 06:19:15,839 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 06:19:15,839 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 06:19:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 06:19:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 06:19:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 06:19:15,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 06:19:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:19:15,840 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 06:19:15,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:19:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 06:19:15,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 06:19:15,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 06:19:15,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:19:15 BasicIcfg [2020-11-12 06:19:15,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 06:19:15,853 INFO L168 Benchmark]: Toolchain (without parser) took 6694.30 ms. Allocated memory was 302.0 MB in the beginning and 526.4 MB in the end (delta: 224.4 MB). Free memory was 276.1 MB in the beginning and 308.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 193.9 MB. Max. memory is 16.0 GB. [2020-11-12 06:19:15,855 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:19:15,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.33 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 274.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 06:19:15,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.75 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 272.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:19:15,865 INFO L168 Benchmark]: Boogie Preprocessor took 29.03 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 270.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:19:15,866 INFO L168 Benchmark]: RCFGBuilder took 695.06 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 249.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 06:19:15,867 INFO L168 Benchmark]: TraceAbstraction took 5208.74 ms. Allocated memory was 302.0 MB in the beginning and 526.4 MB in the end (delta: 224.4 MB). Free memory was 248.5 MB in the beginning and 308.7 MB in the end (delta: -60.1 MB). Peak memory consumption was 167.2 MB. Max. memory is 16.0 GB. [2020-11-12 06:19:15,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 697.33 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 274.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.75 ms. Allocated memory is still 302.0 MB. Free memory was 274.1 MB in the beginning and 272.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.03 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 270.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 695.06 ms. Allocated memory is still 302.0 MB. Free memory was 270.9 MB in the beginning and 249.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5208.74 ms. Allocated memory was 302.0 MB in the beginning and 526.4 MB in the end (delta: 224.4 MB). Free memory was 248.5 MB in the beginning and 308.7 MB in the end (delta: -60.1 MB). Peak memory consumption was 167.2 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: 5.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 476 SDtfs, 765 SDslu, 1696 SDs, 0 SdLazy, 255 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8448occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 43375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...