/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:06:47,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:06:47,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:06:47,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:06:47,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:06:47,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:06:47,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:06:47,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:06:47,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:06:47,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:06:47,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:06:47,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:06:47,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:06:47,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:06:47,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:06:47,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:06:47,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:06:47,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:06:47,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:06:47,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:06:47,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:06:47,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:06:47,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:06:47,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:06:47,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-20 21:06:47,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-20 21:06:47,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-20 21:06:47,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-20 21:06:47,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-20 21:06:47,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-20 21:06:47,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:06:47,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:06:47,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:06:47,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:06:47,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:06:47,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:06:47,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:06:47,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:06:47,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:06:47,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:06:47,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:06:47,629 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-keepdead.epf [2021-01-20 21:06:47,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:06:47,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:06:47,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:06:47,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:06:47,688 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:06:47,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:06:47,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:06:47,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:06:47,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:06:47,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:06:47,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:06:47,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:06:47,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:06:47,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:06:47,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:06:47,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:06:47,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:06:47,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:06:47,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:06:47,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:06:47,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:06:47,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:06:47,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:06:47,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:06:47,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:06:47,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:06:47,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:06:47,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:06:47,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:06:47,695 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:06:47,695 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:06:47,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:06:48,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:06:48,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:06:48,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:06:48,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:06:48,151 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:06:48,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2021-01-20 21:06:48,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354e3938d/e979b1bcd6fc4c53b1a47ce3f07863b3/FLAG00c6386b2 [2021-01-20 21:06:49,066 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:06:49,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2021-01-20 21:06:49,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354e3938d/e979b1bcd6fc4c53b1a47ce3f07863b3/FLAG00c6386b2 [2021-01-20 21:06:49,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354e3938d/e979b1bcd6fc4c53b1a47ce3f07863b3 [2021-01-20 21:06:49,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:06:49,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:06:49,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:06:49,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:06:49,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:06:49,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:06:49" (1/1) ... [2021-01-20 21:06:49,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631f1dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:49, skipping insertion in model container [2021-01-20 21:06:49,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:06:49" (1/1) ... [2021-01-20 21:06:49,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:06:49,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:06:49,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:06:49,872 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:06:49,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:06:50,016 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:06:50,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50 WrapperNode [2021-01-20 21:06:50,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:06:50,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:06:50,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:06:50,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:06:50,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:06:50,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:06:50,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:06:50,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:06:50,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (1/1) ... [2021-01-20 21:06:50,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:06:50,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:06:50,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:06:50,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:06:50,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (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 21:06:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:06:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:06:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:06:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:06:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:06:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:06:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:06:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:06:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:06:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:06:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:06:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:06:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:06:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:06:50,176 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 21:06:50,701 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:06:50,701 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:06:50,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:06:50 BoogieIcfgContainer [2021-01-20 21:06:50,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:06:50,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:06:50,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:06:50,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:06:50,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:06:49" (1/3) ... [2021-01-20 21:06:50,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fa7efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:06:50, skipping insertion in model container [2021-01-20 21:06:50,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:06:50" (2/3) ... [2021-01-20 21:06:50,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fa7efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:06:50, skipping insertion in model container [2021-01-20 21:06:50,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:06:50" (3/3) ... [2021-01-20 21:06:50,713 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2021-01-20 21:06:50,729 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:06:50,729 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:06:50,733 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:06:50,734 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:06:50,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,768 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,768 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,769 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,770 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,770 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,773 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,779 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,786 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,787 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,787 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,787 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,789 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,790 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,790 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:06:50,792 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:06:50,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:06:50,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:06:50,832 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:06:50,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:06:50,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:06:50,832 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:06:50,832 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:06:50,832 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:06:50,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:06:50,845 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 21:06:51,737 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 21:06:51,778 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 21:06:51,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 21:06:51,828 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:51,829 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 21:06:51,829 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:51,836 INFO L82 PathProgramCache]: Analyzing trace with hash -578983952, now seen corresponding path program 1 times [2021-01-20 21:06:51,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:51,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189330694] [2021-01-20 21:06:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:06:52,308 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 21:06:52,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189330694] [2021-01-20 21:06:52,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:06:52,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:06:52,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112820530] [2021-01-20 21:06:52,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:06:52,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:06:52,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:06:52,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:06:52,381 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 21:06:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:06:52,857 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2021-01-20 21:06:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:06:52,859 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 21:06:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:06:52,862 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 21:06:52,862 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 42463 transitions. Word has length 41 [2021-01-20 21:06:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:06:52,864 INFO L481 AbstractCegarLoop]: Abstraction has 12199 states and 42463 transitions. [2021-01-20 21:06:52,865 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 21:06:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 42463 transitions. [2021-01-20 21:06:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 21:06:52,983 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:52,989 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 21:06:52,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:06:52,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:52,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:52,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1808394825, now seen corresponding path program 1 times [2021-01-20 21:06:52,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:52,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471794933] [2021-01-20 21:06:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:06:53,255 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 21:06:53,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471794933] [2021-01-20 21:06:53,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:06:53,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:06:53,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749262007] [2021-01-20 21:06:53,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:06:53,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:06:53,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:06:53,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:06:53,260 INFO L87 Difference]: Start difference. First operand 12199 states and 42463 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:06:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:06:53,800 INFO L93 Difference]: Finished difference Result 18807 states and 65123 transitions. [2021-01-20 21:06:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:06:53,801 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 21:06:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:06:53,803 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 21:06:53,803 INFO L78 Accepts]: Start accepts. Automaton has 18807 states and 65123 transitions. Word has length 43 [2021-01-20 21:06:53,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:06:53,804 INFO L481 AbstractCegarLoop]: Abstraction has 18807 states and 65123 transitions. [2021-01-20 21:06:53,804 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 21:06:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 18807 states and 65123 transitions. [2021-01-20 21:06:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 21:06:53,852 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:53,852 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] [2021-01-20 21:06:53,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:06:53,853 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:53,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1762653605, now seen corresponding path program 1 times [2021-01-20 21:06:53,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:53,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269730374] [2021-01-20 21:06:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:06:54,038 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 21:06:54,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269730374] [2021-01-20 21:06:54,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:06:54,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:06:54,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753993186] [2021-01-20 21:06:54,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:06:54,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:06:54,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:06:54,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:06:54,042 INFO L87 Difference]: Start difference. First operand 18807 states and 65123 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) [2021-01-20 21:06:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:06:54,574 INFO L93 Difference]: Finished difference Result 30143 states and 102933 transitions. [2021-01-20 21:06:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:06:54,575 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 [2021-01-20 21:06:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:06:54,576 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 21:06:54,576 INFO L78 Accepts]: Start accepts. Automaton has 30143 states and 102933 transitions. Word has length 44 [2021-01-20 21:06:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:06:54,576 INFO L481 AbstractCegarLoop]: Abstraction has 30143 states and 102933 transitions. [2021-01-20 21:06:54,577 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) [2021-01-20 21:06:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 30143 states and 102933 transitions. [2021-01-20 21:06:54,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 21:06:54,714 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:54,714 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] [2021-01-20 21:06:54,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:06:54,715 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:54,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1650393558, now seen corresponding path program 1 times [2021-01-20 21:06:54,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:54,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156819264] [2021-01-20 21:06:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:06:54,817 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 21:06:54,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156819264] [2021-01-20 21:06:54,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:06:54,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:06:54,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339637422] [2021-01-20 21:06:54,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:06:54,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:06:54,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:06:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:06:54,820 INFO L87 Difference]: Start difference. First operand 30143 states and 102933 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) [2021-01-20 21:06:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:06:55,398 INFO L93 Difference]: Finished difference Result 47423 states and 160767 transitions. [2021-01-20 21:06:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:06:55,399 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 [2021-01-20 21:06:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:06:55,399 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 21:06:55,400 INFO L78 Accepts]: Start accepts. Automaton has 47423 states and 160767 transitions. Word has length 45 [2021-01-20 21:06:55,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:06:55,400 INFO L481 AbstractCegarLoop]: Abstraction has 47423 states and 160767 transitions. [2021-01-20 21:06:55,400 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) [2021-01-20 21:06:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 47423 states and 160767 transitions. [2021-01-20 21:06:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:06:55,438 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:55,438 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 21:06:55,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:06:55,439 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1010838069, now seen corresponding path program 1 times [2021-01-20 21:06:55,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:55,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552191239] [2021-01-20 21:06:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:06:55,643 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2021-01-20 21:06:55,680 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 21:06:55,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552191239] [2021-01-20 21:06:55,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:06:55,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:06:55,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290991067] [2021-01-20 21:06:55,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:06:55,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:06:55,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:06:55,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:06:55,684 INFO L87 Difference]: Start difference. First operand 47423 states and 160767 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:06:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:06:56,533 INFO L93 Difference]: Finished difference Result 70459 states and 237271 transitions. [2021-01-20 21:06:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:06:56,533 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 21:06:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:06:56,534 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 21:06:56,534 INFO L78 Accepts]: Start accepts. Automaton has 70459 states and 237271 transitions. Word has length 47 [2021-01-20 21:06:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:06:56,535 INFO L481 AbstractCegarLoop]: Abstraction has 70459 states and 237271 transitions. [2021-01-20 21:06:56,535 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 21:06:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 70459 states and 237271 transitions. [2021-01-20 21:06:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:06:56,600 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:56,600 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 21:06:56,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:06:56,601 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1880295013, now seen corresponding path program 1 times [2021-01-20 21:06:56,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:56,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588388474] [2021-01-20 21:06:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:06:56,772 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 21:06:56,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588388474] [2021-01-20 21:06:56,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:06:56,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:06:56,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452744800] [2021-01-20 21:06:56,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:06:56,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:06:56,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:06:56,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:06:56,778 INFO L87 Difference]: Start difference. First operand 70459 states and 237271 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:06:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:06:58,005 INFO L93 Difference]: Finished difference Result 96235 states and 322723 transitions. [2021-01-20 21:06:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:06:58,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:06:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:06:58,007 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:06:58,007 INFO L78 Accepts]: Start accepts. Automaton has 96235 states and 322723 transitions. Word has length 48 [2021-01-20 21:06:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:06:58,007 INFO L481 AbstractCegarLoop]: Abstraction has 96235 states and 322723 transitions. [2021-01-20 21:06:58,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:06:58,008 INFO L276 IsEmpty]: Start isEmpty. Operand 96235 states and 322723 transitions. [2021-01-20 21:06:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:06:58,081 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:58,081 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 21:06:58,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:06:58,081 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:58,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1507471679, now seen corresponding path program 2 times [2021-01-20 21:06:58,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:58,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457265091] [2021-01-20 21:06:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:06:58,225 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 21:06:58,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457265091] [2021-01-20 21:06:58,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:06:58,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:06:58,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157222114] [2021-01-20 21:06:58,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:06:58,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:06:58,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:06:58,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:06:58,229 INFO L87 Difference]: Start difference. First operand 96235 states and 322723 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:06:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:06:59,717 INFO L93 Difference]: Finished difference Result 159835 states and 528007 transitions. [2021-01-20 21:06:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-20 21:06:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:06:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:06:59,718 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:06:59,718 INFO L78 Accepts]: Start accepts. Automaton has 159835 states and 528007 transitions. Word has length 48 [2021-01-20 21:06:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:06:59,719 INFO L481 AbstractCegarLoop]: Abstraction has 159835 states and 528007 transitions. [2021-01-20 21:06:59,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:06:59,719 INFO L276 IsEmpty]: Start isEmpty. Operand 159835 states and 528007 transitions. [2021-01-20 21:06:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:06:59,846 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:06:59,847 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 21:06:59,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:06:59,847 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:06:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:06:59,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2067721465, now seen corresponding path program 1 times [2021-01-20 21:06:59,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:06:59,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630705871] [2021-01-20 21:06:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:06:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:07:00,032 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 21:07:00,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630705871] [2021-01-20 21:07:00,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:07:00,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:07:00,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486131704] [2021-01-20 21:07:00,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:07:00,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:07:00,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:07:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:07:00,035 INFO L87 Difference]: Start difference. First operand 159835 states and 528007 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:07:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:07:02,231 INFO L93 Difference]: Finished difference Result 195411 states and 644189 transitions. [2021-01-20 21:07:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:07:02,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:07:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:07:02,232 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:07:02,233 INFO L78 Accepts]: Start accepts. Automaton has 195411 states and 644189 transitions. Word has length 48 [2021-01-20 21:07:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:07:02,233 INFO L481 AbstractCegarLoop]: Abstraction has 195411 states and 644189 transitions. [2021-01-20 21:07:02,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 21:07:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 195411 states and 644189 transitions. [2021-01-20 21:07:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:07:02,422 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:07:02,423 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 21:07:02,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:07:02,423 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:07:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:07:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash 608113037, now seen corresponding path program 1 times [2021-01-20 21:07:02,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:07:02,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489886892] [2021-01-20 21:07:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:07:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:07:02,615 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 21:07:02,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489886892] [2021-01-20 21:07:02,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:07:02,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:07:02,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037312281] [2021-01-20 21:07:02,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:07:02,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:07:02,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:07:02,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:07:02,621 INFO L87 Difference]: Start difference. First operand 195411 states and 644189 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:07:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:07:03,694 INFO L93 Difference]: Finished difference Result 102902 states and 331847 transitions. [2021-01-20 21:07:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:07:03,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 21:07:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:07:03,699 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 21:07:03,700 INFO L78 Accepts]: Start accepts. Automaton has 102902 states and 331847 transitions. Word has length 49 [2021-01-20 21:07:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:07:03,700 INFO L481 AbstractCegarLoop]: Abstraction has 102902 states and 331847 transitions. [2021-01-20 21:07:03,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:07:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 102902 states and 331847 transitions. [2021-01-20 21:07:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-20 21:07:03,815 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:07:03,815 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] [2021-01-20 21:07:03,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-20 21:07:03,816 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:07:03,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:07:03,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1984353874, now seen corresponding path program 1 times [2021-01-20 21:07:03,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:07:03,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777654667] [2021-01-20 21:07:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:07:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:07:04,057 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 21:07:04,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777654667] [2021-01-20 21:07:04,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:07:04,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:07:04,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961316589] [2021-01-20 21:07:04,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:07:04,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:07:04,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:07:04,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:07:04,060 INFO L87 Difference]: Start difference. First operand 102902 states and 331847 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:07:04,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:07:04,531 INFO L93 Difference]: Finished difference Result 52904 states and 166377 transitions. [2021-01-20 21:07:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:07:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-01-20 21:07:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:07:04,532 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:07:04,532 INFO L78 Accepts]: Start accepts. Automaton has 52904 states and 166377 transitions. Word has length 50 [2021-01-20 21:07:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:07:04,532 INFO L481 AbstractCegarLoop]: Abstraction has 52904 states and 166377 transitions. [2021-01-20 21:07:04,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:07:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 52904 states and 166377 transitions. [2021-01-20 21:07:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 21:07:04,582 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:07:04,582 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 21:07:04,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-20 21:07:04,582 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:07:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:07:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash -126840041, now seen corresponding path program 1 times [2021-01-20 21:07:04,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:07:04,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304278344] [2021-01-20 21:07:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:07:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:07:04,708 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 21:07:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304278344] [2021-01-20 21:07:04,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:07:04,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:07:04,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597570680] [2021-01-20 21:07:04,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:07:04,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:07:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:07:04,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:07:04,712 INFO L87 Difference]: Start difference. First operand 52904 states and 166377 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:07:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:07:05,758 INFO L93 Difference]: Finished difference Result 30881 states and 96189 transitions. [2021-01-20 21:07:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:07:05,759 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 21:07:05,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:07:05,760 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:07:05,760 INFO L78 Accepts]: Start accepts. Automaton has 30881 states and 96189 transitions. Word has length 51 [2021-01-20 21:07:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:07:05,761 INFO L481 AbstractCegarLoop]: Abstraction has 30881 states and 96189 transitions. [2021-01-20 21:07:05,761 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 21:07:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 30881 states and 96189 transitions. [2021-01-20 21:07:05,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:07:05,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-20 21:07:05,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:07:05 BasicIcfg [2021-01-20 21:07:05,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:07:05,835 INFO L168 Benchmark]: Toolchain (without parser) took 16544.21 ms. Allocated memory was 302.0 MB in the beginning and 11.5 GB in the end (delta: 11.2 GB). Free memory was 271.1 MB in the beginning and 10.2 GB in the end (delta: -9.9 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.0 GB. [2021-01-20 21:07:05,836 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:07:05,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.85 ms. Allocated memory is still 302.0 MB. Free memory was 270.8 MB in the beginning and 263.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-01-20 21:07:05,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.94 ms. Allocated memory is still 302.0 MB. Free memory was 263.3 MB in the beginning and 261.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:07:05,838 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 302.0 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:07:05,839 INFO L168 Benchmark]: RCFGBuilder took 608.02 ms. Allocated memory is still 302.0 MB. Free memory was 259.7 MB in the beginning and 276.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.0 GB. [2021-01-20 21:07:05,840 INFO L168 Benchmark]: TraceAbstraction took 15127.92 ms. Allocated memory was 302.0 MB in the beginning and 11.5 GB in the end (delta: 11.2 GB). Free memory was 276.9 MB in the beginning and 10.2 GB in the end (delta: -9.9 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.0 GB. [2021-01-20 21:07:05,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 723.85 ms. Allocated memory is still 302.0 MB. Free memory was 270.8 MB in the beginning and 263.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.94 ms. Allocated memory is still 302.0 MB. Free memory was 263.3 MB in the beginning and 261.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 302.0 MB. Free memory was 261.1 MB in the beginning and 260.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 608.02 ms. Allocated memory is still 302.0 MB. Free memory was 259.7 MB in the beginning and 276.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 15127.92 ms. Allocated memory was 302.0 MB in the beginning and 11.5 GB in the end (delta: 11.2 GB). Free memory was 276.9 MB in the beginning and 10.2 GB in the end (delta: -9.9 GB). Peak memory consumption was 1.3 GB. 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: 15.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 1373 SDtfs, 2531 SDslu, 4675 SDs, 0 SdLazy, 570 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195411occurred in iteration=8, 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, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 514 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 63547 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...