/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/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:09:59,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:09:59,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:09:59,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:09:59,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:09:59,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:09:59,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:09:59,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:09:59,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:09:59,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:09:59,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:09:59,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:09:59,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:09:59,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:09:59,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:09:59,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:09:59,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:09:59,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:09:59,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:09:59,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:09:59,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:09:59,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:09:59,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:09:59,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:09:59,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 18:09:59,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 18:09:59,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 18:09:59,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 18:09:59,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 18:09:59,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 18:09:59,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:09:59,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:09:59,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:09:59,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:09:59,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:09:59,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:09:59,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:09:59,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:09:59,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:09:59,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:09:59,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:09:59,768 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 18:09:59,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:09:59,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:09:59,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:09:59,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:09:59,799 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:09:59,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:09:59,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:09:59,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:09:59,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:09:59,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:09:59,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:09:59,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:09:59,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:09:59,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:09:59,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:09:59,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:09:59,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:09:59,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:09:59,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:09:59,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:09:59,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:09:59,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:09:59,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:09:59,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:09:59,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:09:59,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:09:59,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:09:59,805 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:09:59,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:09:59,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:10:00,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:10:00,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:10:00,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:10:00,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:10:00,287 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:10:00,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-11-11 18:10:00,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67f76a5c/ba2e9aa433784c1e9533b7882fd09eac/FLAG5f0b42e0a [2020-11-11 18:10:01,179 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:10:01,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2020-11-11 18:10:01,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67f76a5c/ba2e9aa433784c1e9533b7882fd09eac/FLAG5f0b42e0a [2020-11-11 18:10:01,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67f76a5c/ba2e9aa433784c1e9533b7882fd09eac [2020-11-11 18:10:01,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:10:01,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:10:01,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:10:01,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:10:01,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:10:01,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:10:01" (1/1) ... [2020-11-11 18:10:01,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425f2b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:01, skipping insertion in model container [2020-11-11 18:10:01,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:10:01" (1/1) ... [2020-11-11 18:10:01,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:10:01,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:10:01,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:10:02,007 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:10:02,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:10:02,204 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:10:02,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02 WrapperNode [2020-11-11 18:10:02,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:10:02,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:10:02,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:10:02,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:10:02,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:10:02,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:10:02,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:10:02,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:10:02,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (1/1) ... [2020-11-11 18:10:02,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:10:02,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:10:02,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:10:02,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:10:02,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (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 18:10:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:10:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:10:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:10:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:10:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:10:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:10:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:10:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:10:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:10:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:10:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:10:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:10:02,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:10:02,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:10:02,386 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 18:10:02,965 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:10:02,966 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:10:02,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:10:02 BoogieIcfgContainer [2020-11-11 18:10:02,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:10:02,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:10:02,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:10:02,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:10:02,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:10:01" (1/3) ... [2020-11-11 18:10:02,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f000678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:10:02, skipping insertion in model container [2020-11-11 18:10:02,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:10:02" (2/3) ... [2020-11-11 18:10:02,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f000678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:10:02, skipping insertion in model container [2020-11-11 18:10:02,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:10:02" (3/3) ... [2020-11-11 18:10:02,981 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2020-11-11 18:10:03,002 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:10:03,002 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:10:03,007 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:10:03,008 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:10:03,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,057 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,061 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,061 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,066 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,075 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,075 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,082 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,083 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,083 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,088 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:10:03,091 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:10:03,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:10:03,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:10:03,145 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:10:03,145 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:10:03,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:10:03,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:10:03,146 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:10:03,146 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:10:03,146 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:10:03,166 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 76 transitions, 167 flow [2020-11-11 18:10:03,937 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 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 18:10:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 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 18:10:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-11 18:10:04,022 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:04,023 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] [2020-11-11 18:10:04,023 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:04,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:04,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1568087296, now seen corresponding path program 1 times [2020-11-11 18:10:04,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:04,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513299046] [2020-11-11 18:10:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:04,513 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 18:10:04,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513299046] [2020-11-11 18:10:04,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:04,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:10:04,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661166922] [2020-11-11 18:10:04,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:10:04,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:04,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:10:04,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:10:04,572 INFO L87 Difference]: Start difference. First operand has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 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 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 18:10:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:04,997 INFO L93 Difference]: Finished difference Result 10462 states and 36158 transitions. [2020-11-11 18:10:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:10:04,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2020-11-11 18:10:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:05,058 INFO L225 Difference]: With dead ends: 10462 [2020-11-11 18:10:05,058 INFO L226 Difference]: Without dead ends: 3952 [2020-11-11 18:10:05,060 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 18:10:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2020-11-11 18:10:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3952. [2020-11-11 18:10:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3951 states have (on average 3.389774740572007) internal successors, (13393), 3951 states have internal predecessors, (13393), 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 18:10:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 13393 transitions. [2020-11-11 18:10:05,463 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 13393 transitions. Word has length 40 [2020-11-11 18:10:05,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:05,464 INFO L481 AbstractCegarLoop]: Abstraction has 3952 states and 13393 transitions. [2020-11-11 18:10:05,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 18:10:05,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 13393 transitions. [2020-11-11 18:10:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:10:05,477 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:05,477 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:10:05,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:10:05,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:05,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1336679455, now seen corresponding path program 1 times [2020-11-11 18:10:05,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:05,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130254457] [2020-11-11 18:10:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:05,796 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 18:10:05,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130254457] [2020-11-11 18:10:05,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:05,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:10:05,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987926729] [2020-11-11 18:10:05,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:10:05,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:05,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:10:05,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:10:05,802 INFO L87 Difference]: Start difference. First operand 3952 states and 13393 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:06,054 INFO L93 Difference]: Finished difference Result 5812 states and 19566 transitions. [2020-11-11 18:10:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:10:06,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-11 18:10:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:06,087 INFO L225 Difference]: With dead ends: 5812 [2020-11-11 18:10:06,087 INFO L226 Difference]: Without dead ends: 3502 [2020-11-11 18:10:06,088 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:10:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2020-11-11 18:10:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3502. [2020-11-11 18:10:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3502 states, 3501 states have (on average 3.3336189660097113) internal successors, (11671), 3501 states have internal predecessors, (11671), 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 18:10:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 11671 transitions. [2020-11-11 18:10:06,300 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 11671 transitions. Word has length 42 [2020-11-11 18:10:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:06,302 INFO L481 AbstractCegarLoop]: Abstraction has 3502 states and 11671 transitions. [2020-11-11 18:10:06,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 11671 transitions. [2020-11-11 18:10:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:10:06,317 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:06,317 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] [2020-11-11 18:10:06,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:10:06,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:06,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2143626530, now seen corresponding path program 1 times [2020-11-11 18:10:06,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:06,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311341426] [2020-11-11 18:10:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:06,475 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 18:10:06,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311341426] [2020-11-11 18:10:06,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:06,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:10:06,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818274305] [2020-11-11 18:10:06,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:10:06,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:06,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:10:06,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:10:06,479 INFO L87 Difference]: Start difference. First operand 3502 states and 11671 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:06,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:06,729 INFO L93 Difference]: Finished difference Result 3998 states and 13207 transitions. [2020-11-11 18:10:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:10:06,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-11 18:10:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:06,760 INFO L225 Difference]: With dead ends: 3998 [2020-11-11 18:10:06,761 INFO L226 Difference]: Without dead ends: 3438 [2020-11-11 18:10:06,761 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 18:10:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2020-11-11 18:10:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 3438. [2020-11-11 18:10:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 3437 states have (on average 3.325865580448065) internal successors, (11431), 3437 states have internal predecessors, (11431), 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 18:10:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 11431 transitions. [2020-11-11 18:10:06,909 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 11431 transitions. Word has length 44 [2020-11-11 18:10:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:06,910 INFO L481 AbstractCegarLoop]: Abstraction has 3438 states and 11431 transitions. [2020-11-11 18:10:06,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 11431 transitions. [2020-11-11 18:10:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:10:06,921 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:06,921 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 18:10:06,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:10:06,921 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:06,923 INFO L82 PathProgramCache]: Analyzing trace with hash -654532284, now seen corresponding path program 1 times [2020-11-11 18:10:06,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:06,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731178479] [2020-11-11 18:10:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:07,101 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 18:10:07,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731178479] [2020-11-11 18:10:07,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:07,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:10:07,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903615917] [2020-11-11 18:10:07,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:10:07,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:07,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:10:07,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:10:07,104 INFO L87 Difference]: Start difference. First operand 3438 states and 11431 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 18:10:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:07,385 INFO L93 Difference]: Finished difference Result 5406 states and 17607 transitions. [2020-11-11 18:10:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:10:07,386 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 18:10:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:07,429 INFO L225 Difference]: With dead ends: 5406 [2020-11-11 18:10:07,429 INFO L226 Difference]: Without dead ends: 3758 [2020-11-11 18:10:07,429 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 18:10:07,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2020-11-11 18:10:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3118. [2020-11-11 18:10:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 3117 states have (on average 3.2348411934552455) internal successors, (10083), 3117 states have internal predecessors, (10083), 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 18:10:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 10083 transitions. [2020-11-11 18:10:07,577 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 10083 transitions. Word has length 45 [2020-11-11 18:10:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:07,578 INFO L481 AbstractCegarLoop]: Abstraction has 3118 states and 10083 transitions. [2020-11-11 18:10:07,578 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 18:10:07,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 10083 transitions. [2020-11-11 18:10:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:10:07,588 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:07,588 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 18:10:07,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:10:07,588 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:07,590 INFO L82 PathProgramCache]: Analyzing trace with hash 725194327, now seen corresponding path program 1 times [2020-11-11 18:10:07,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:07,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680467074] [2020-11-11 18:10:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:07,729 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 18:10:07,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680467074] [2020-11-11 18:10:07,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:07,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:10:07,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884121317] [2020-11-11 18:10:07,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:10:07,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:07,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:10:07,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:10:07,735 INFO L87 Difference]: Start difference. First operand 3118 states and 10083 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 18:10:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:07,940 INFO L93 Difference]: Finished difference Result 4382 states and 13899 transitions. [2020-11-11 18:10:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:10:07,940 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 18:10:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:07,953 INFO L225 Difference]: With dead ends: 4382 [2020-11-11 18:10:07,954 INFO L226 Difference]: Without dead ends: 2830 [2020-11-11 18:10:07,954 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 18:10:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-11-11 18:10:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2190. [2020-11-11 18:10:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2189 states have (on average 3.098675194152581) internal successors, (6783), 2189 states have internal predecessors, (6783), 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 18:10:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 6783 transitions. [2020-11-11 18:10:08,045 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 6783 transitions. Word has length 45 [2020-11-11 18:10:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:08,046 INFO L481 AbstractCegarLoop]: Abstraction has 2190 states and 6783 transitions. [2020-11-11 18:10:08,046 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 18:10:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 6783 transitions. [2020-11-11 18:10:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-11 18:10:08,052 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:08,053 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 18:10:08,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:10:08,053 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:08,054 INFO L82 PathProgramCache]: Analyzing trace with hash -643023679, now seen corresponding path program 1 times [2020-11-11 18:10:08,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:08,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73470086] [2020-11-11 18:10:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:08,159 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 18:10:08,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73470086] [2020-11-11 18:10:08,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:08,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:10:08,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423397338] [2020-11-11 18:10:08,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:10:08,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:08,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:10:08,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:10:08,162 INFO L87 Difference]: Start difference. First operand 2190 states and 6783 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:08,312 INFO L93 Difference]: Finished difference Result 2665 states and 8119 transitions. [2020-11-11 18:10:08,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:10:08,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-11 18:10:08,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:08,322 INFO L225 Difference]: With dead ends: 2665 [2020-11-11 18:10:08,322 INFO L226 Difference]: Without dead ends: 1993 [2020-11-11 18:10:08,323 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:10:08,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-11-11 18:10:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1993. [2020-11-11 18:10:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1992 states have (on average 3.0451807228915664) internal successors, (6066), 1992 states have internal predecessors, (6066), 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 18:10:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 6066 transitions. [2020-11-11 18:10:08,398 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 6066 transitions. Word has length 46 [2020-11-11 18:10:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:08,399 INFO L481 AbstractCegarLoop]: Abstraction has 1993 states and 6066 transitions. [2020-11-11 18:10:08,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:10:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 6066 transitions. [2020-11-11 18:10:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:10:08,405 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:08,405 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 18:10:08,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:10:08,406 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2047216989, now seen corresponding path program 1 times [2020-11-11 18:10:08,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:08,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46020198] [2020-11-11 18:10:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:08,526 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 18:10:08,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46020198] [2020-11-11 18:10:08,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:08,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:10:08,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871112601] [2020-11-11 18:10:08,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:10:08,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:08,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:10:08,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:10:08,529 INFO L87 Difference]: Start difference. First operand 1993 states and 6066 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 18:10:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:08,722 INFO L93 Difference]: Finished difference Result 1864 states and 5467 transitions. [2020-11-11 18:10:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:10:08,723 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 18:10:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:08,729 INFO L225 Difference]: With dead ends: 1864 [2020-11-11 18:10:08,729 INFO L226 Difference]: Without dead ends: 1284 [2020-11-11 18:10:08,729 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 18:10:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-11-11 18:10:08,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2020-11-11 18:10:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.8706157443491818) internal successors, (3683), 1283 states have internal predecessors, (3683), 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 18:10:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3683 transitions. [2020-11-11 18:10:08,771 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3683 transitions. Word has length 47 [2020-11-11 18:10:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:08,772 INFO L481 AbstractCegarLoop]: Abstraction has 1284 states and 3683 transitions. [2020-11-11 18:10:08,772 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 18:10:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3683 transitions. [2020-11-11 18:10:08,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:10:08,776 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:10:08,776 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 18:10:08,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:10:08,776 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:10:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:10:08,777 INFO L82 PathProgramCache]: Analyzing trace with hash -306973980, now seen corresponding path program 1 times [2020-11-11 18:10:08,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:10:08,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432036115] [2020-11-11 18:10:08,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:10:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:10:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:10:08,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432036115] [2020-11-11 18:10:08,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:10:08,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:10:08,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428659757] [2020-11-11 18:10:08,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:10:08,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:10:08,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:10:08,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:10:08,904 INFO L87 Difference]: Start difference. First operand 1284 states and 3683 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 18:10:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:10:09,032 INFO L93 Difference]: Finished difference Result 726 states and 1958 transitions. [2020-11-11 18:10:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-11 18:10:09,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 18:10:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:10:09,033 INFO L225 Difference]: With dead ends: 726 [2020-11-11 18:10:09,033 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:10:09,033 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:10:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:10:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:10:09,034 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 18:10:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:10:09,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-11-11 18:10:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:10:09,035 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:10:09,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 18:10:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:10:09,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:10:09,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:10:09,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:10:09 BasicIcfg [2020-11-11 18:10:09,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:10:09,044 INFO L168 Benchmark]: Toolchain (without parser) took 7556.73 ms. Allocated memory was 302.0 MB in the beginning and 750.8 MB in the end (delta: 448.8 MB). Free memory was 275.8 MB in the beginning and 584.5 MB in the end (delta: -308.7 MB). Peak memory consumption was 142.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:09,045 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 273.2 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:10:09,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.68 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 278.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:09,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 302.0 MB. Free memory was 278.4 MB in the beginning and 276.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:10:09,047 INFO L168 Benchmark]: Boogie Preprocessor took 28.26 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 275.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:09,048 INFO L168 Benchmark]: RCFGBuilder took 684.36 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 251.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:09,049 INFO L168 Benchmark]: TraceAbstraction took 6068.11 ms. Allocated memory was 302.0 MB in the beginning and 750.8 MB in the end (delta: 448.8 MB). Free memory was 250.1 MB in the beginning and 584.5 MB in the end (delta: -334.4 MB). Peak memory consumption was 114.4 MB. Max. memory is 16.0 GB. [2020-11-11 18:10:09,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 273.2 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 711.68 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 278.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 302.0 MB. Free memory was 278.4 MB in the beginning and 276.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.26 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 275.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 684.36 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 251.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6068.11 ms. Allocated memory was 302.0 MB in the beginning and 750.8 MB in the end (delta: 448.8 MB). Free memory was 250.1 MB in the beginning and 584.5 MB in the end (delta: -334.4 MB). Peak memory consumption was 114.4 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 762 SDtfs, 1030 SDslu, 2336 SDs, 0 SdLazy, 266 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8446occurred 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: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1280 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 358 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 40938 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...