/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-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:23:06,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:23:06,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:23:06,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:23:06,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:23:06,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:23:06,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:23:06,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:23:06,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:23:06,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:23:06,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:23:06,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:23:06,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:23:06,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:23:06,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:23:06,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:23:06,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:23:06,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:23:06,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:23:06,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:23:06,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:23:06,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:23:06,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:23:06,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:23:06,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 12:23:06,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 12:23:06,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 12:23:06,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 12:23:06,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 12:23:06,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 12:23:06,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:23:06,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:23:06,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:23:06,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:23:06,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:23:06,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:23:06,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:23:06,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:23:06,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:23:06,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:23:06,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:23:06,954 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-New_States.epf [2020-11-12 12:23:06,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:23:06,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:23:06,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:23:06,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:23:06,985 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:23:06,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:23:06,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:23:06,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:23:06,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:23:06,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:23:06,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:23:06,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:23:06,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:23:06,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:23:06,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:23:06,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:23:06,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:23:06,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:23:06,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:23:06,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:23:06,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:23:06,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:23:06,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:23:06,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:23:06,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:23:06,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:23:06,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:23:06,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:23:06,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:23:06,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:23:06,992 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:23:07,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:23:07,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:23:07,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:23:07,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:23:07,406 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:23:07,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-11-12 12:23:07,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13bb5ac93/f1cd15d725a9440ebab75f49a1c0e475/FLAG2bea1eab0 [2020-11-12 12:23:08,323 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:23:08,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-11-12 12:23:08,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13bb5ac93/f1cd15d725a9440ebab75f49a1c0e475/FLAG2bea1eab0 [2020-11-12 12:23:08,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13bb5ac93/f1cd15d725a9440ebab75f49a1c0e475 [2020-11-12 12:23:08,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:23:08,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:23:08,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:23:08,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:23:08,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:23:08,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:23:08" (1/1) ... [2020-11-12 12:23:08,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed14b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:08, skipping insertion in model container [2020-11-12 12:23:08,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:23:08" (1/1) ... [2020-11-12 12:23:08,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:23:08,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:23:09,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:23:09,218 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:23:09,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:23:09,439 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:23:09,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09 WrapperNode [2020-11-12 12:23:09,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:23:09,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:23:09,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:23:09,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:23:09,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:23:09,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:23:09,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:23:09,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:23:09,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... [2020-11-12 12:23:09,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:23:09,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:23:09,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:23:09,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:23:09,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:23:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:23:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:23:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:23:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:23:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:23:09,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:23:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:23:09,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:23:09,718 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:23:09,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:23:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:23:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:23:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:23:09,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:23:09,722 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:23:10,193 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:23:10,194 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:23:10,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:23:10 BoogieIcfgContainer [2020-11-12 12:23:10,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:23:10,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:23:10,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:23:10,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:23:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:23:08" (1/3) ... [2020-11-12 12:23:10,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ceb788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:23:10, skipping insertion in model container [2020-11-12 12:23:10,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:23:09" (2/3) ... [2020-11-12 12:23:10,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ceb788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:23:10, skipping insertion in model container [2020-11-12 12:23:10,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:23:10" (3/3) ... [2020-11-12 12:23:10,205 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-11-12 12:23:10,221 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:23:10,222 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:23:10,225 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:23:10,226 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:23:10,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,265 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,265 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,265 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,268 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,269 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,269 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,271 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,271 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,271 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,271 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,276 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,277 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,282 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,282 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,282 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,286 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,286 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,286 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:23:10,290 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:23:10,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:23:10,328 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:23:10,328 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:23:10,328 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:23:10,328 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:23:10,329 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:23:10,329 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:23:10,329 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:23:10,329 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:23:10,342 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 12:23:11,203 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:12,183 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 977ms [2020-11-12 12:23:12,216 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:12,276 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34448 states, 31503 states have (on average 1.1954734469733042) internal successors, (37661), 34447 states have internal predecessors, (37661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 34448 states, 31503 states have (on average 1.1954734469733042) internal successors, (37661), 34447 states have internal predecessors, (37661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:12,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:23:12,421 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:12,422 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:12,423 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:12,429 INFO L82 PathProgramCache]: Analyzing trace with hash 143249805, now seen corresponding path program 1 times [2020-11-12 12:23:12,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:12,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126129491] [2020-11-12 12:23:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:12,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126129491] [2020-11-12 12:23:12,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:12,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:23:12,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747864981] [2020-11-12 12:23:12,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:23:12,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:12,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:23:12,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:23:12,993 INFO L87 Difference]: Start difference. First operand has 34448 states, 31503 states have (on average 1.1954734469733042) internal successors, (37661), 34447 states have internal predecessors, (37661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:13,294 INFO L93 Difference]: Finished difference Result 13976 states and 16024 transitions. [2020-11-12 12:23:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:23:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-12 12:23:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:13,351 INFO L225 Difference]: With dead ends: 13976 [2020-11-12 12:23:13,351 INFO L226 Difference]: Without dead ends: 4768 [2020-11-12 12:23:13,353 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:23:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2020-11-12 12:23:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 4768. [2020-11-12 12:23:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4523 states have (on average 1.3338492151227062) internal successors, (6033), 4767 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 6033 transitions. [2020-11-12 12:23:13,654 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 6033 transitions. Word has length 42 [2020-11-12 12:23:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:13,655 INFO L481 AbstractCegarLoop]: Abstraction has 4768 states and 6033 transitions. [2020-11-12 12:23:13,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 6033 transitions. [2020-11-12 12:23:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:23:13,668 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:13,669 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:13,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:23:13,669 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:13,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1163284558, now seen corresponding path program 1 times [2020-11-12 12:23:13,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:13,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888415624] [2020-11-12 12:23:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:13,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888415624] [2020-11-12 12:23:13,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:13,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:23:13,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674301263] [2020-11-12 12:23:13,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:23:13,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:13,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:23:13,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:23:13,921 INFO L87 Difference]: Start difference. First operand 4768 states and 6033 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:14,246 INFO L93 Difference]: Finished difference Result 6227 states and 8001 transitions. [2020-11-12 12:23:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:23:14,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 12:23:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:14,265 INFO L225 Difference]: With dead ends: 6227 [2020-11-12 12:23:14,265 INFO L226 Difference]: Without dead ends: 2679 [2020-11-12 12:23:14,266 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:23:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2020-11-12 12:23:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2679. [2020-11-12 12:23:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2539 states have (on average 1.2760929499803073) internal successors, (3240), 2678 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 3240 transitions. [2020-11-12 12:23:14,371 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 3240 transitions. Word has length 44 [2020-11-12 12:23:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:14,372 INFO L481 AbstractCegarLoop]: Abstraction has 2679 states and 3240 transitions. [2020-11-12 12:23:14,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:14,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 3240 transitions. [2020-11-12 12:23:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:23:14,382 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:14,382 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:14,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:23:14,383 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:14,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1560628649, now seen corresponding path program 1 times [2020-11-12 12:23:14,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:14,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40337967] [2020-11-12 12:23:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:14,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40337967] [2020-11-12 12:23:14,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:14,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:23:14,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188381457] [2020-11-12 12:23:14,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:23:14,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:14,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:23:14,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:23:14,548 INFO L87 Difference]: Start difference. First operand 2679 states and 3240 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) [2020-11-12 12:23:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:14,760 INFO L93 Difference]: Finished difference Result 3078 states and 3546 transitions. [2020-11-12 12:23:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:23:14,760 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 [2020-11-12 12:23:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:14,773 INFO L225 Difference]: With dead ends: 3078 [2020-11-12 12:23:14,773 INFO L226 Difference]: Without dead ends: 2510 [2020-11-12 12:23:14,774 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:23:14,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2020-11-12 12:23:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2510. [2020-11-12 12:23:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2378 states have (on average 1.2514718250630783) internal successors, (2976), 2509 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 2976 transitions. [2020-11-12 12:23:14,837 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 2976 transitions. Word has length 47 [2020-11-12 12:23:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:14,837 INFO L481 AbstractCegarLoop]: Abstraction has 2510 states and 2976 transitions. [2020-11-12 12:23:14,837 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) [2020-11-12 12:23:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 2976 transitions. [2020-11-12 12:23:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:23:14,842 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:14,842 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:14,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:23:14,843 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:14,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:14,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1321451508, now seen corresponding path program 1 times [2020-11-12 12:23:14,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:14,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884587118] [2020-11-12 12:23:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:14,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884587118] [2020-11-12 12:23:14,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:14,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:23:14,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735985251] [2020-11-12 12:23:14,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:23:14,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:14,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:23:14,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:23:14,997 INFO L87 Difference]: Start difference. First operand 2510 states and 2976 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) [2020-11-12 12:23:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:15,191 INFO L93 Difference]: Finished difference Result 2394 states and 2682 transitions. [2020-11-12 12:23:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:23:15,192 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 [2020-11-12 12:23:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:15,201 INFO L225 Difference]: With dead ends: 2394 [2020-11-12 12:23:15,201 INFO L226 Difference]: Without dead ends: 1713 [2020-11-12 12:23:15,201 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:23:15,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2020-11-12 12:23:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2020-11-12 12:23:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1623 states have (on average 1.1663585951940851) internal successors, (1893), 1712 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 1893 transitions. [2020-11-12 12:23:15,242 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 1893 transitions. Word has length 48 [2020-11-12 12:23:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:15,242 INFO L481 AbstractCegarLoop]: Abstraction has 1713 states and 1893 transitions. [2020-11-12 12:23:15,242 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) [2020-11-12 12:23:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 1893 transitions. [2020-11-12 12:23:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:23:15,246 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:15,246 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:15,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:23:15,247 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash 33663821, now seen corresponding path program 1 times [2020-11-12 12:23:15,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:15,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511637718] [2020-11-12 12:23:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:15,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511637718] [2020-11-12 12:23:15,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:15,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:23:15,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296404229] [2020-11-12 12:23:15,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:23:15,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:15,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:23:15,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:23:15,418 INFO L87 Difference]: Start difference. First operand 1713 states and 1893 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:15,641 INFO L93 Difference]: Finished difference Result 1192 states and 1273 transitions. [2020-11-12 12:23:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:23:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-12 12:23:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:15,645 INFO L225 Difference]: With dead ends: 1192 [2020-11-12 12:23:15,646 INFO L226 Difference]: Without dead ends: 570 [2020-11-12 12:23:15,646 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:23:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-11-12 12:23:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2020-11-12 12:23:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 543 states have (on average 1.0699815837937385) internal successors, (581), 569 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 581 transitions. [2020-11-12 12:23:15,660 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 581 transitions. Word has length 50 [2020-11-12 12:23:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:15,661 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 581 transitions. [2020-11-12 12:23:15,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 581 transitions. [2020-11-12 12:23:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:23:15,663 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:15,664 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:15,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:23:15,664 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:15,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:15,665 INFO L82 PathProgramCache]: Analyzing trace with hash -178527541, now seen corresponding path program 1 times [2020-11-12 12:23:15,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:15,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926949638] [2020-11-12 12:23:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:15,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926949638] [2020-11-12 12:23:15,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:15,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:23:15,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190779063] [2020-11-12 12:23:15,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:23:15,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:15,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:23:15,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:23:15,790 INFO L87 Difference]: Start difference. First operand 570 states and 581 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:15,908 INFO L93 Difference]: Finished difference Result 934 states and 942 transitions. [2020-11-12 12:23:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 12:23:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2020-11-12 12:23:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:15,914 INFO L225 Difference]: With dead ends: 934 [2020-11-12 12:23:15,914 INFO L226 Difference]: Without dead ends: 519 [2020-11-12 12:23:15,914 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-12 12:23:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-11-12 12:23:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2020-11-12 12:23:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 492 states have (on average 1.0528455284552845) internal successors, (518), 518 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 518 transitions. [2020-11-12 12:23:15,928 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 518 transitions. Word has length 54 [2020-11-12 12:23:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:15,929 INFO L481 AbstractCegarLoop]: Abstraction has 519 states and 518 transitions. [2020-11-12 12:23:15,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 518 transitions. [2020-11-12 12:23:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:23:15,931 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:23:15,931 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:23:15,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:23:15,931 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:23:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:23:15,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1453263537, now seen corresponding path program 2 times [2020-11-12 12:23:15,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:23:15,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220501076] [2020-11-12 12:23:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:23:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:23:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:23:16,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220501076] [2020-11-12 12:23:16,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:23:16,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:23:16,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950051677] [2020-11-12 12:23:16,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:23:16,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:23:16,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:23:16,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:23:16,165 INFO L87 Difference]: Start difference. First operand 519 states and 518 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:23:16,279 INFO L93 Difference]: Finished difference Result 411 states and 410 transitions. [2020-11-12 12:23:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:23:16,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2020-11-12 12:23:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:23:16,280 INFO L225 Difference]: With dead ends: 411 [2020-11-12 12:23:16,280 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:23:16,280 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:23:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:23:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:23:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:23:16,282 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-12 12:23:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:23:16,283 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:23:16,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:23:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:23:16,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:23:16,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:23:16,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:23:16 BasicIcfg [2020-11-12 12:23:16,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:23:16,295 INFO L168 Benchmark]: Toolchain (without parser) took 7671.95 ms. Allocated memory was 302.0 MB in the beginning and 763.4 MB in the end (delta: 461.4 MB). Free memory was 277.7 MB in the beginning and 560.0 MB in the end (delta: -282.2 MB). Peak memory consumption was 181.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:16,296 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:23:16,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.50 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 246.2 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:16,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.13 ms. Allocated memory is still 302.0 MB. Free memory was 246.2 MB in the beginning and 244.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:16,305 INFO L168 Benchmark]: Boogie Preprocessor took 62.02 ms. Allocated memory is still 302.0 MB. Free memory was 244.2 MB in the beginning and 243.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:16,305 INFO L168 Benchmark]: RCFGBuilder took 588.60 ms. Allocated memory is still 302.0 MB. Free memory was 242.7 MB in the beginning and 264.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:16,306 INFO L168 Benchmark]: TraceAbstraction took 6092.84 ms. Allocated memory was 302.0 MB in the beginning and 763.4 MB in the end (delta: 461.4 MB). Free memory was 264.9 MB in the beginning and 560.0 MB in the end (delta: -295.1 MB). Peak memory consumption was 166.3 MB. Max. memory is 16.0 GB. [2020-11-12 12:23:16,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 813.50 ms. Allocated memory is still 302.0 MB. Free memory was 276.9 MB in the beginning and 246.2 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 102.13 ms. Allocated memory is still 302.0 MB. Free memory was 246.2 MB in the beginning and 244.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 62.02 ms. Allocated memory is still 302.0 MB. Free memory was 244.2 MB in the beginning and 243.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 588.60 ms. Allocated memory is still 302.0 MB. Free memory was 242.7 MB in the beginning and 264.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6092.84 ms. Allocated memory was 302.0 MB in the beginning and 763.4 MB in the end (delta: 461.4 MB). Free memory was 264.9 MB in the beginning and 560.0 MB in the end (delta: -295.1 MB). Peak memory consumption was 166.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 461 SDtfs, 691 SDslu, 1678 SDs, 0 SdLazy, 182 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34448occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 41700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...