/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:50:30,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:50:30,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:50:30,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:50:30,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:50:30,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:50:30,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:50:30,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:50:30,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:50:30,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:50:30,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:50:30,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:50:30,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:50:30,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:50:30,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:50:30,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:50:30,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:50:30,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:50:30,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:50:30,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:50:30,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:50:30,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:50:30,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:50:30,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:50:30,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:50:30,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:50:30,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:50:30,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:50:30,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:50:30,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:50:30,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:50:30,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:50:30,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:50:30,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:50:30,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:50:30,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:50:30,590 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 [2021-01-20 14:50:30,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:50:30,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:50:30,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:50:30,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:50:30,656 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:50:30,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:50:30,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:50:30,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:50:30,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:50:30,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:50:30,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:50:30,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:50:30,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:50:30,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:50:30,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:50:30,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:50:30,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:50:30,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:50:30,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:50:30,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:50:30,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:50:30,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:50:30,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:50:30,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:50:30,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:50:30,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:50:30,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:50:30,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:50:30,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:50:30,664 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:50:30,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:50:31,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:50:31,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:50:31,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:50:31,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:50:31,183 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:50:31,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-01-20 14:50:31,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930469b17/31421124abad4b61a174ef8227d08b0e/FLAG1f2dee3d6 [2021-01-20 14:50:32,039 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:50:32,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-01-20 14:50:32,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930469b17/31421124abad4b61a174ef8227d08b0e/FLAG1f2dee3d6 [2021-01-20 14:50:32,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930469b17/31421124abad4b61a174ef8227d08b0e [2021-01-20 14:50:32,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:50:32,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:50:32,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:50:32,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:50:32,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:50:32,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:32,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba1f559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32, skipping insertion in model container [2021-01-20 14:50:32,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:32,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:50:32,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:50:32,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:50:32,766 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:50:32,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:50:32,949 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:50:32,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32 WrapperNode [2021-01-20 14:50:32,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:50:32,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:50:32,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:50:32,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:50:32,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:32,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:50:33,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:50:33,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:50:33,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:50:33,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (1/1) ... [2021-01-20 14:50:33,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:50:33,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:50:33,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:50:33,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:50:33,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (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 [2021-01-20 14:50:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:50:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:50:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:50:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:50:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:50:33,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:50:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:50:33,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:50:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:50:33,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:50:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:50:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:50:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:50:33,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:50:33,199 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:50:33,680 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:50:33,681 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:50:33,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:50:33 BoogieIcfgContainer [2021-01-20 14:50:33,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:50:33,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:50:33,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:50:33,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:50:33,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:50:32" (1/3) ... [2021-01-20 14:50:33,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcda616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:50:33, skipping insertion in model container [2021-01-20 14:50:33,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:50:32" (2/3) ... [2021-01-20 14:50:33,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcda616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:50:33, skipping insertion in model container [2021-01-20 14:50:33,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:50:33" (3/3) ... [2021-01-20 14:50:33,693 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2021-01-20 14:50:33,711 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:50:33,712 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:50:33,716 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:50:33,717 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:50:33,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,760 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,762 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,762 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,762 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,763 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,764 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,764 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,764 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,764 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,764 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,780 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,781 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:50:33,787 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:50:33,801 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:50:33,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:50:33,826 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:50:33,827 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:50:33,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:50:33,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:50:33,827 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:50:33,827 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:50:33,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:50:33,842 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 14:50:34,798 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 14:50:34,898 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:34,899 INFO L504 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] [2021-01-20 14:50:34,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:34,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1725749416, now seen corresponding path program 1 times [2021-01-20 14:50:34,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:34,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833500288] [2021-01-20 14:50:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:35,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833500288] [2021-01-20 14:50:35,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:35,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:50:35,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576048721] [2021-01-20 14:50:35,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:50:35,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:35,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:50:35,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:50:35,501 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:36,149 INFO L93 Difference]: Finished difference Result 13459 states and 47001 transitions. [2021-01-20 14:50:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:50:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-01-20 14:50:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:36,240 INFO L225 Difference]: With dead ends: 13459 [2021-01-20 14:50:36,241 INFO L226 Difference]: Without dead ends: 5164 [2021-01-20 14:50:36,243 INFO L769 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 [2021-01-20 14:50:36,244 INFO L78 Accepts]: Start accepts. Automaton has 5164 states. Word has length 41 [2021-01-20 14:50:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:36,246 INFO L481 AbstractCegarLoop]: Abstraction has 5164 states. [2021-01-20 14:50:36,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states. [2021-01-20 14:50:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:50:36,270 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:36,270 INFO L504 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] [2021-01-20 14:50:36,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:50:36,272 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:36,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1909768869, now seen corresponding path program 1 times [2021-01-20 14:50:36,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:36,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472170620] [2021-01-20 14:50:36,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:36,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472170620] [2021-01-20 14:50:36,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:36,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:50:36,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173963306] [2021-01-20 14:50:36,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:50:36,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:36,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:50:36,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:50:36,531 INFO L87 Difference]: Start difference. First operand 5164 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:36,701 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-01-20 14:50:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:36,970 INFO L93 Difference]: Finished difference Result 8909 states and 30137 transitions. [2021-01-20 14:50:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:50:36,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:50:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:37,028 INFO L225 Difference]: With dead ends: 8909 [2021-01-20 14:50:37,028 INFO L226 Difference]: Without dead ends: 6004 [2021-01-20 14:50:37,029 INFO L769 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 [2021-01-20 14:50:37,029 INFO L78 Accepts]: Start accepts. Automaton has 6004 states. Word has length 43 [2021-01-20 14:50:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:37,030 INFO L481 AbstractCegarLoop]: Abstraction has 6004 states. [2021-01-20 14:50:37,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6004 states. [2021-01-20 14:50:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:50:37,044 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:37,044 INFO L504 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] [2021-01-20 14:50:37,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:50:37,045 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:37,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1966288231, now seen corresponding path program 1 times [2021-01-20 14:50:37,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:37,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366477209] [2021-01-20 14:50:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:37,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366477209] [2021-01-20 14:50:37,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:37,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:50:37,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522375187] [2021-01-20 14:50:37,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:50:37,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:37,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:50:37,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:50:37,192 INFO L87 Difference]: Start difference. First operand 6004 states. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:37,446 INFO L93 Difference]: Finished difference Result 5444 states and 17955 transitions. [2021-01-20 14:50:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:50:37,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:50:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:37,477 INFO L225 Difference]: With dead ends: 5444 [2021-01-20 14:50:37,477 INFO L226 Difference]: Without dead ends: 3274 [2021-01-20 14:50:37,477 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:50:37,478 INFO L78 Accepts]: Start accepts. Automaton has 3274 states. Word has length 43 [2021-01-20 14:50:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:37,478 INFO L481 AbstractCegarLoop]: Abstraction has 3274 states. [2021-01-20 14:50:37,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states. [2021-01-20 14:50:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-20 14:50:37,490 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:37,490 INFO L504 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] [2021-01-20 14:50:37,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:50:37,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:37,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1990619176, now seen corresponding path program 1 times [2021-01-20 14:50:37,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:37,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129250869] [2021-01-20 14:50:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:37,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129250869] [2021-01-20 14:50:37,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:37,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:50:37,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942338666] [2021-01-20 14:50:37,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:50:37,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:37,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:50:37,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:50:37,619 INFO L87 Difference]: Start difference. First operand 3274 states. 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) [2021-01-20 14:50:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:37,765 INFO L93 Difference]: Finished difference Result 3770 states and 12367 transitions. [2021-01-20 14:50:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:50:37,766 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 [2021-01-20 14:50:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:37,782 INFO L225 Difference]: With dead ends: 3770 [2021-01-20 14:50:37,782 INFO L226 Difference]: Without dead ends: 3210 [2021-01-20 14:50:37,783 INFO L769 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 [2021-01-20 14:50:37,783 INFO L78 Accepts]: Start accepts. Automaton has 3210 states. Word has length 46 [2021-01-20 14:50:37,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:37,784 INFO L481 AbstractCegarLoop]: Abstraction has 3210 states. [2021-01-20 14:50:37,784 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) [2021-01-20 14:50:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states. [2021-01-20 14:50:37,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:50:37,842 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:37,842 INFO L504 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] [2021-01-20 14:50:37,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:50:37,843 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:37,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1452854260, now seen corresponding path program 1 times [2021-01-20 14:50:37,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:37,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305642117] [2021-01-20 14:50:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:37,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305642117] [2021-01-20 14:50:37,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:37,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:50:37,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885583098] [2021-01-20 14:50:37,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:50:37,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:37,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:50:37,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:50:37,966 INFO L87 Difference]: Start difference. First operand 3210 states. 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) [2021-01-20 14:50:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:38,119 INFO L93 Difference]: Finished difference Result 4718 states and 15578 transitions. [2021-01-20 14:50:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:50:38,120 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 [2021-01-20 14:50:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:38,135 INFO L225 Difference]: With dead ends: 4718 [2021-01-20 14:50:38,135 INFO L226 Difference]: Without dead ends: 2965 [2021-01-20 14:50:38,136 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:50:38,136 INFO L78 Accepts]: Start accepts. Automaton has 2965 states. Word has length 47 [2021-01-20 14:50:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:38,137 INFO L481 AbstractCegarLoop]: Abstraction has 2965 states. [2021-01-20 14:50:38,137 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) [2021-01-20 14:50:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states. [2021-01-20 14:50:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 14:50:38,147 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:38,147 INFO L504 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] [2021-01-20 14:50:38,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:50:38,148 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1988271790, now seen corresponding path program 2 times [2021-01-20 14:50:38,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:38,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560058205] [2021-01-20 14:50:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:38,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560058205] [2021-01-20 14:50:38,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:38,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:50:38,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816743738] [2021-01-20 14:50:38,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:50:38,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:50:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:50:38,252 INFO L87 Difference]: Start difference. First operand 2965 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:38,455 INFO L93 Difference]: Finished difference Result 4677 states and 15065 transitions. [2021-01-20 14:50:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:50:38,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-01-20 14:50:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:38,471 INFO L225 Difference]: With dead ends: 4677 [2021-01-20 14:50:38,471 INFO L226 Difference]: Without dead ends: 3349 [2021-01-20 14:50:38,472 INFO L769 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 [2021-01-20 14:50:38,472 INFO L78 Accepts]: Start accepts. Automaton has 3349 states. Word has length 47 [2021-01-20 14:50:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:38,472 INFO L481 AbstractCegarLoop]: Abstraction has 3349 states. [2021-01-20 14:50:38,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states. [2021-01-20 14:50:38,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:50:38,483 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:38,483 INFO L504 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] [2021-01-20 14:50:38,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:50:38,483 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:38,484 INFO L82 PathProgramCache]: Analyzing trace with hash 659614723, now seen corresponding path program 1 times [2021-01-20 14:50:38,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:38,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218638325] [2021-01-20 14:50:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:38,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218638325] [2021-01-20 14:50:38,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:38,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:50:38,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742012167] [2021-01-20 14:50:38,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:50:38,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:50:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:50:38,609 INFO L87 Difference]: Start difference. First operand 3349 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:38,775 INFO L93 Difference]: Finished difference Result 4005 states and 12589 transitions. [2021-01-20 14:50:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:50:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:50:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:38,789 INFO L225 Difference]: With dead ends: 4005 [2021-01-20 14:50:38,790 INFO L226 Difference]: Without dead ends: 3053 [2021-01-20 14:50:38,790 INFO L769 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 [2021-01-20 14:50:38,790 INFO L78 Accepts]: Start accepts. Automaton has 3053 states. Word has length 48 [2021-01-20 14:50:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:38,791 INFO L481 AbstractCegarLoop]: Abstraction has 3053 states. [2021-01-20 14:50:38,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states. [2021-01-20 14:50:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:50:38,800 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:38,800 INFO L504 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] [2021-01-20 14:50:38,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:50:38,800 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:38,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1879681106, now seen corresponding path program 1 times [2021-01-20 14:50:38,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:38,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765435033] [2021-01-20 14:50:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:38,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765435033] [2021-01-20 14:50:38,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:38,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:50:38,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198775571] [2021-01-20 14:50:38,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:50:38,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:38,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:50:38,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:50:38,946 INFO L87 Difference]: Start difference. First operand 3053 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:39,220 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-01-20 14:50:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:39,247 INFO L93 Difference]: Finished difference Result 2915 states and 8883 transitions. [2021-01-20 14:50:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:50:39,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:50:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:39,256 INFO L225 Difference]: With dead ends: 2915 [2021-01-20 14:50:39,256 INFO L226 Difference]: Without dead ends: 2123 [2021-01-20 14:50:39,257 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:50:39,257 INFO L78 Accepts]: Start accepts. Automaton has 2123 states. Word has length 49 [2021-01-20 14:50:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:39,257 INFO L481 AbstractCegarLoop]: Abstraction has 2123 states. [2021-01-20 14:50:39,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:50:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states. [2021-01-20 14:50:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:50:39,264 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:39,264 INFO L504 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] [2021-01-20 14:50:39,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 14:50:39,265 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:39,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:39,265 INFO L82 PathProgramCache]: Analyzing trace with hash -793050483, now seen corresponding path program 1 times [2021-01-20 14:50:39,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:39,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328388082] [2021-01-20 14:50:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:39,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328388082] [2021-01-20 14:50:39,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:39,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:50:39,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47307189] [2021-01-20 14:50:39,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:50:39,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:39,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:50:39,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:50:39,400 INFO L87 Difference]: Start difference. First operand 2123 states. 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) [2021-01-20 14:50:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:39,601 INFO L93 Difference]: Finished difference Result 1502 states and 4359 transitions. [2021-01-20 14:50:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:50:39,601 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 [2021-01-20 14:50:39,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:39,604 INFO L225 Difference]: With dead ends: 1502 [2021-01-20 14:50:39,605 INFO L226 Difference]: Without dead ends: 730 [2021-01-20 14:50:39,605 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:50:39,605 INFO L78 Accepts]: Start accepts. Automaton has 730 states. Word has length 51 [2021-01-20 14:50:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:39,606 INFO L481 AbstractCegarLoop]: Abstraction has 730 states. [2021-01-20 14:50:39,606 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) [2021-01-20 14:50:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states. [2021-01-20 14:50:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 14:50:39,609 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:50:39,609 INFO L504 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] [2021-01-20 14:50:39,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 14:50:39,609 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:50:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:50:39,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1746000022, now seen corresponding path program 1 times [2021-01-20 14:50:39,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:50:39,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902956711] [2021-01-20 14:50:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:50:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:50:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:50:39,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902956711] [2021-01-20 14:50:39,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:50:39,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:50:39,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665392214] [2021-01-20 14:50:39,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:50:39,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:50:39,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:50:39,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:50:39,754 INFO L87 Difference]: Start difference. First operand 730 states. 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) [2021-01-20 14:50:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:50:39,856 INFO L93 Difference]: Finished difference Result 622 states and 1724 transitions. [2021-01-20 14:50:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:50:39,857 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 [2021-01-20 14:50:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:50:39,857 INFO L225 Difference]: With dead ends: 622 [2021-01-20 14:50:39,857 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:50:39,858 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:50:39,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 53 [2021-01-20 14:50:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:50:39,858 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:50:39,859 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) [2021-01-20 14:50:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:50:39,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:50:39,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 14:50:39,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:50:39 BasicIcfg [2021-01-20 14:50:39,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:50:39,866 INFO L168 Benchmark]: Toolchain (without parser) took 7593.81 ms. Allocated memory was 302.0 MB in the beginning and 752.9 MB in the end (delta: 450.9 MB). Free memory was 275.8 MB in the beginning and 542.4 MB in the end (delta: -266.6 MB). Peak memory consumption was 185.9 MB. Max. memory is 16.0 GB. [2021-01-20 14:50:39,867 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:50:39,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.66 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 275.4 MB in the end (delta: 83.6 kB). Peak memory consumption was 30.4 MB. Max. memory is 16.0 GB. [2021-01-20 14:50:39,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.38 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 274.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:50:39,869 INFO L168 Benchmark]: Boogie Preprocessor took 62.19 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 272.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:50:39,870 INFO L168 Benchmark]: RCFGBuilder took 573.71 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 250.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:50:39,870 INFO L168 Benchmark]: TraceAbstraction took 6178.67 ms. Allocated memory was 302.0 MB in the beginning and 752.9 MB in the end (delta: 450.9 MB). Free memory was 249.2 MB in the beginning and 542.4 MB in the end (delta: -293.2 MB). Peak memory consumption was 159.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:50:39,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 302.0 MB. Free memory was 272.9 MB in the beginning and 272.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 675.66 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 275.4 MB in the end (delta: 83.6 kB). Peak memory consumption was 30.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 95.38 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 274.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 62.19 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 272.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 573.71 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 250.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6178.67 ms. Allocated memory was 302.0 MB in the beginning and 752.9 MB in the end (delta: 450.9 MB). Free memory was 249.2 MB in the beginning and 542.4 MB in the end (delta: -293.2 MB). Peak memory consumption was 159.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 991 SDtfs, 1257 SDslu, 3113 SDs, 0 SdLazy, 385 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 468 NumberOfCodeBlocks, 468 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 458 ConstructedInterpolants, 0 QuantifiedInterpolants, 52608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...