/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:34:21,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:34:21,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:34:21,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:34:21,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-15 01:34:21,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-15 01:34:21,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-15 01:34:21,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-15 01:34:21,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-15 01:34:21,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-15 01:34:21,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-15 01:34:21,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-15 01:34:21,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:34:21,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:34:21,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:34:21,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-04-15 01:34:21,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:34:21,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:34:21,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:34:21,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:34:21,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:34:21,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:34:21,655 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:34:21,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:34:21,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:34:21,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:34:21,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:34:21,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:34:21,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:34:21,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:34:21,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:34:21,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:34:21,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:34:21,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:34:21,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:34:21,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:34:21,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:34:21,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:34:21,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:34:21,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:34:21,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:34:21,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:34:21,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:34:21,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:34:21,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:34:21,660 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:34:21,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:34:21,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:34:21,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:34:21,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:34:21,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:34:21,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:34:21,990 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:34:21,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-04-15 01:34:22,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710f73038/2bbb9a8966fa4f06b42bc3864ed24536/FLAGa2fc73f18 [2021-04-15 01:34:22,556 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:34:22,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-04-15 01:34:22,557 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:34:22,557 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:34:22,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710f73038/2bbb9a8966fa4f06b42bc3864ed24536/FLAGa2fc73f18 [2021-04-15 01:34:22,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/710f73038/2bbb9a8966fa4f06b42bc3864ed24536 [2021-04-15 01:34:22,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:34:22,931 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:34:22,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:34:22,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:34:22,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:34:22,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:34:22" (1/1) ... [2021-04-15 01:34:22,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cccbcc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:22, skipping insertion in model container [2021-04-15 01:34:22,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:34:22" (1/1) ... [2021-04-15 01:34:22,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:34:22,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:34:23,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:34:23,118 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:34:23,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:34:23,146 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:34:23,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23 WrapperNode [2021-04-15 01:34:23,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:34:23,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:34:23,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:34:23,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:34:23,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:34:23,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:34:23,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:34:23,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:34:23,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (1/1) ... [2021-04-15 01:34:23,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:34:23,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:34:23,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:34:23,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:34:23,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (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 [2021-04-15 01:34:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-04-15 01:34:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:34:23,279 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-04-15 01:34:23,280 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-04-15 01:34:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:34:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:34:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:34:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-15 01:34:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-04-15 01:34:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:34:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:34:23,283 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:34:23,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:34:23,605 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-04-15 01:34:23,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:34:23 BoogieIcfgContainer [2021-04-15 01:34:23,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:34:23,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:34:23,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:34:23,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:34:23,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:34:22" (1/3) ... [2021-04-15 01:34:23,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3200362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:34:23, skipping insertion in model container [2021-04-15 01:34:23,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:34:23" (2/3) ... [2021-04-15 01:34:23,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3200362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:34:23, skipping insertion in model container [2021-04-15 01:34:23,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:34:23" (3/3) ... [2021-04-15 01:34:23,619 INFO L111 eAbstractionObserver]: Analyzing ICFG simpleReturn.c [2021-04-15 01:34:23,624 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:34:23,624 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:34:23,629 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:34:23,629 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:34:23,652 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,652 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,652 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,652 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,653 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,653 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,653 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,653 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,653 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,653 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,653 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,654 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,654 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,654 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,654 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,654 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,654 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,655 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,655 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,655 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,655 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,655 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,655 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,656 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,656 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,656 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,656 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,656 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,657 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,657 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,657 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,657 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,657 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,657 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,658 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,658 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,658 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,658 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,660 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,661 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,661 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,661 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,661 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,661 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,661 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:34:23,671 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-15 01:34:23,687 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-15 01:34:23,714 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:34:23,715 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:34:23,715 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:34:23,715 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:34:23,715 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:34:23,715 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:34:23,715 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:34:23,715 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:34:23,725 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 42 transitions, 92 flow [2021-04-15 01:34:23,735 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 63 states, 61 states have (on average 1.360655737704918) internal successors, (83), 62 states have internal predecessors, (83), 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) [2021-04-15 01:34:23,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 61 states have (on average 1.360655737704918) internal successors, (83), 62 states have internal predecessors, (83), 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) [2021-04-15 01:34:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-15 01:34:23,743 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:23,744 INFO L551 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] [2021-04-15 01:34:23,744 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:23,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:23,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1577019086, now seen corresponding path program 1 times [2021-04-15 01:34:23,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:23,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688764147] [2021-04-15 01:34:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:24,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688764147] [2021-04-15 01:34:24,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:24,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-15 01:34:24,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597717676] [2021-04-15 01:34:24,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 01:34:24,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:24,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 01:34:24,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-04-15 01:34:24,294 INFO L87 Difference]: Start difference. First operand has 63 states, 61 states have (on average 1.360655737704918) internal successors, (83), 62 states have internal predecessors, (83), 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 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:25,288 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2021-04-15 01:34:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-04-15 01:34:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 31 [2021-04-15 01:34:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:25,297 INFO L225 Difference]: With dead ends: 87 [2021-04-15 01:34:25,298 INFO L226 Difference]: Without dead ends: 49 [2021-04-15 01:34:25,302 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 853.6ms TimeCoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2021-04-15 01:34:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-04-15 01:34:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-04-15 01:34:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 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) [2021-04-15 01:34:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2021-04-15 01:34:25,336 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 31 [2021-04-15 01:34:25,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:25,336 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2021-04-15 01:34:25,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:25,337 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2021-04-15 01:34:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-15 01:34:25,337 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:25,338 INFO L551 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] [2021-04-15 01:34:25,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:34:25,338 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:25,339 INFO L82 PathProgramCache]: Analyzing trace with hash -945048428, now seen corresponding path program 2 times [2021-04-15 01:34:25,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:25,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301499654] [2021-04-15 01:34:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:25,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301499654] [2021-04-15 01:34:25,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:25,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-15 01:34:25,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038642058] [2021-04-15 01:34:25,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 01:34:25,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:25,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 01:34:25,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-04-15 01:34:25,625 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:26,358 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2021-04-15 01:34:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 01:34:26,359 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 31 [2021-04-15 01:34:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:26,364 INFO L225 Difference]: With dead ends: 67 [2021-04-15 01:34:26,364 INFO L226 Difference]: Without dead ends: 45 [2021-04-15 01:34:26,365 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 682.2ms TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2021-04-15 01:34:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-04-15 01:34:26,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-04-15 01:34:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 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) [2021-04-15 01:34:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2021-04-15 01:34:26,377 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 31 [2021-04-15 01:34:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:26,377 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2021-04-15 01:34:26,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2021-04-15 01:34:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-15 01:34:26,379 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:26,379 INFO L551 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] [2021-04-15 01:34:26,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:34:26,379 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:26,380 INFO L82 PathProgramCache]: Analyzing trace with hash 327280468, now seen corresponding path program 3 times [2021-04-15 01:34:26,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:26,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774765266] [2021-04-15 01:34:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:26,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774765266] [2021-04-15 01:34:26,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:26,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-15 01:34:26,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621329231] [2021-04-15 01:34:26,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 01:34:26,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:26,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 01:34:26,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-04-15 01:34:26,643 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:27,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:27,354 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2021-04-15 01:34:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-04-15 01:34:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 31 [2021-04-15 01:34:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:27,356 INFO L225 Difference]: With dead ends: 65 [2021-04-15 01:34:27,356 INFO L226 Difference]: Without dead ends: 43 [2021-04-15 01:34:27,357 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 615.3ms TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2021-04-15 01:34:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-04-15 01:34:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-04-15 01:34:27,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:34:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-04-15 01:34:27,361 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 31 [2021-04-15 01:34:27,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:27,361 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-04-15 01:34:27,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:27,361 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-04-15 01:34:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-15 01:34:27,362 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:27,362 INFO L551 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] [2021-04-15 01:34:27,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:34:27,362 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1731554394, now seen corresponding path program 4 times [2021-04-15 01:34:27,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:27,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295111410] [2021-04-15 01:34:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:27,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295111410] [2021-04-15 01:34:27,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:27,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-15 01:34:27,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006508689] [2021-04-15 01:34:27,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 01:34:27,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 01:34:27,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-04-15 01:34:27,601 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:28,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:28,270 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2021-04-15 01:34:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 01:34:28,271 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 31 [2021-04-15 01:34:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:28,271 INFO L225 Difference]: With dead ends: 65 [2021-04-15 01:34:28,271 INFO L226 Difference]: Without dead ends: 41 [2021-04-15 01:34:28,272 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 602.4ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 01:34:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-04-15 01:34:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-04-15 01:34:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 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) [2021-04-15 01:34:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-04-15 01:34:28,275 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2021-04-15 01:34:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:28,275 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-04-15 01:34:28,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-04-15 01:34:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-15 01:34:28,276 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:28,276 INFO L551 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] [2021-04-15 01:34:28,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:34:28,277 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash -542677548, now seen corresponding path program 5 times [2021-04-15 01:34:28,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:28,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079173557] [2021-04-15 01:34:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:28,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079173557] [2021-04-15 01:34:28,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:28,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-15 01:34:28,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262494676] [2021-04-15 01:34:28,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 01:34:28,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:28,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 01:34:28,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-04-15 01:34:28,501 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:29,112 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2021-04-15 01:34:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 01:34:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 31 [2021-04-15 01:34:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:29,116 INFO L225 Difference]: With dead ends: 65 [2021-04-15 01:34:29,116 INFO L226 Difference]: Without dead ends: 39 [2021-04-15 01:34:29,117 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 549.5ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 01:34:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-04-15 01:34:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-04-15 01:34:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 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) [2021-04-15 01:34:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-04-15 01:34:29,120 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 31 [2021-04-15 01:34:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:29,120 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-04-15 01:34:29,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-04-15 01:34:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-04-15 01:34:29,121 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:34:29,121 INFO L551 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] [2021-04-15 01:34:29,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 01:34:29,121 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:34:29,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:34:29,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1286378202, now seen corresponding path program 6 times [2021-04-15 01:34:29,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:34:29,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031048490] [2021-04-15 01:34:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:34:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:34:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:34:29,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031048490] [2021-04-15 01:34:29,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:34:29,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-04-15 01:34:29,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777496517] [2021-04-15 01:34:29,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-04-15 01:34:29,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:34:29,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-04-15 01:34:29,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-04-15 01:34:29,413 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:29,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:34:29,951 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2021-04-15 01:34:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-04-15 01:34:29,951 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 31 [2021-04-15 01:34:29,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:34:29,952 INFO L225 Difference]: With dead ends: 38 [2021-04-15 01:34:29,952 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:34:29,952 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 592.6ms TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2021-04-15 01:34:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:34:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:34:29,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:34:29,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:34:29,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-04-15 01:34:29,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:34:29,953 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:34:29,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2021-04-15 01:34:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:34:29,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:34:29,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 01:34:29,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:34:29 BasicIcfg [2021-04-15 01:34:29,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:34:29,958 INFO L168 Benchmark]: Toolchain (without parser) took 7027.08 ms. Allocated memory was 255.9 MB in the beginning and 503.3 MB in the end (delta: 247.5 MB). Free memory was 232.5 MB in the beginning and 355.0 MB in the end (delta: -122.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:29,959 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 168.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:29,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.08 ms. Allocated memory was 255.9 MB in the beginning and 419.4 MB in the end (delta: 163.6 MB). Free memory was 231.9 MB in the beginning and 402.4 MB in the end (delta: -170.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:29,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 419.4 MB. Free memory was 402.4 MB in the beginning and 401.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:34:29,959 INFO L168 Benchmark]: Boogie Preprocessor took 34.02 ms. Allocated memory is still 419.4 MB. Free memory was 401.0 MB in the beginning and 399.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:29,960 INFO L168 Benchmark]: RCFGBuilder took 393.54 ms. Allocated memory is still 419.4 MB. Free memory was 399.7 MB in the beginning and 384.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:29,960 INFO L168 Benchmark]: TraceAbstraction took 6349.74 ms. Allocated memory was 419.4 MB in the beginning and 503.3 MB in the end (delta: 83.9 MB). Free memory was 383.6 MB in the beginning and 355.0 MB in the end (delta: 28.6 MB). Peak memory consumption was 113.2 MB. Max. memory is 16.0 GB. [2021-04-15 01:34:29,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 168.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 215.08 ms. Allocated memory was 255.9 MB in the beginning and 419.4 MB in the end (delta: 163.6 MB). Free memory was 231.9 MB in the beginning and 402.4 MB in the end (delta: -170.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 419.4 MB. Free memory was 402.4 MB in the beginning and 401.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.02 ms. Allocated memory is still 419.4 MB. Free memory was 401.0 MB in the beginning and 399.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 393.54 ms. Allocated memory is still 419.4 MB. Free memory was 399.7 MB in the beginning and 384.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6349.74 ms. Allocated memory was 419.4 MB in the beginning and 503.3 MB in the end (delta: 83.9 MB). Free memory was 383.6 MB in the beginning and 355.0 MB in the end (delta: 28.6 MB). Peak memory consumption was 113.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6241.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 11.3ms, AutomataDifference: 4300.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 107 SDtfs, 818 SDslu, 1311 SDs, 0 SdLazy, 2060 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1045.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 3895.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.7ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 109.1ms SatisfiabilityAnalysisTime, 1612.8ms InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 1636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...