/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/safe035_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:28:55,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:28:55,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:28:55,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:28:55,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:28:55,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:28:55,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:28:55,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:28:55,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:28:55,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:28:55,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:28:55,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:28:55,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:28:55,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:28:55,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:28:55,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:28:55,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:28:55,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:28:55,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:28:55,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:28:55,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:28:55,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:28:55,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:28:55,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:28:55,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:28:55,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:28:55,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:28:56,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:28:56,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:28:56,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:28:56,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:28:56,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:28:56,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:28:56,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:28:56,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:28:56,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:28:56,012 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 12:28:56,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:28:56,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:28:56,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:28:56,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:28:56,075 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:28:56,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:28:56,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:28:56,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:28:56,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:28:56,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:28:56,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:28:56,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:28:56,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:28:56,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:28:56,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:28:56,078 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:28:56,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:28:56,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:28:56,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:28:56,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:28:56,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:28:56,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:28:56,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:28:56,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:28:56,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:28:56,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:28:56,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:28:56,081 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:28:56,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:28:56,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:28:56,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:28:56,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:28:56,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:28:56,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:28:56,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:28:56,563 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:28:56,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2020-11-12 12:28:56,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe7048e8/c5326d44ee8749c4a6e77f8e08aaa798/FLAG059493580 [2020-11-12 12:28:57,472 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:28:57,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2020-11-12 12:28:57,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe7048e8/c5326d44ee8749c4a6e77f8e08aaa798/FLAG059493580 [2020-11-12 12:28:57,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe7048e8/c5326d44ee8749c4a6e77f8e08aaa798 [2020-11-12 12:28:57,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:28:57,675 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:28:57,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:28:57,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:28:57,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:28:57,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:28:57" (1/1) ... [2020-11-12 12:28:57,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fa78fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:57, skipping insertion in model container [2020-11-12 12:28:57,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:28:57" (1/1) ... [2020-11-12 12:28:57,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:28:57,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:28:58,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:28:58,164 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:28:58,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:28:58,331 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:28:58,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58 WrapperNode [2020-11-12 12:28:58,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:28:58,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:28:58,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:28:58,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:28:58,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:28:58,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:28:58,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:28:58,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:28:58,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (1/1) ... [2020-11-12 12:28:58,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:28:58,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:28:58,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:28:58,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:28:58,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (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 12:28:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:28:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:28:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:28:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:28:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:28:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:28:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:28:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:28:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:28:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:28:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:28:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:28:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:28:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:28:58,520 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 12:28:58,892 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:28:58,892 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:28:58,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:28:58 BoogieIcfgContainer [2020-11-12 12:28:58,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:28:58,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:28:58,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:28:58,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:28:58,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:28:57" (1/3) ... [2020-11-12 12:28:58,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584e217f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:28:58, skipping insertion in model container [2020-11-12 12:28:58,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:28:58" (2/3) ... [2020-11-12 12:28:58,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584e217f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:28:58, skipping insertion in model container [2020-11-12 12:28:58,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:28:58" (3/3) ... [2020-11-12 12:28:58,904 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.opt.i [2020-11-12 12:28:58,925 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:28:58,926 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:28:58,929 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:28:58,930 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:28:58,990 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,990 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,990 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,991 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,991 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,992 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,992 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,992 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,994 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,995 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,996 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,997 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,997 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,998 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,998 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:58,999 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,000 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,002 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,003 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,004 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,004 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,005 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,005 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,014 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,026 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,027 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,027 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,045 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:28:59,064 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:28:59,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:28:59,131 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:28:59,131 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:28:59,132 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:28:59,132 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:28:59,132 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:28:59,132 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:28:59,133 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:28:59,133 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:28:59,158 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 12:29:00,233 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 12:29:01,417 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 1180ms [2020-11-12 12:29:01,462 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 12:29:01,615 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 33527 states, 30624 states have (on average 1.1925287356321839) internal successors, (36520), 33526 states have internal predecessors, (36520), 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 12:29:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 33527 states, 30624 states have (on average 1.1925287356321839) internal successors, (36520), 33526 states have internal predecessors, (36520), 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 12:29:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:29:01,749 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:29:01,750 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 12:29:01,750 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:29:01,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:29:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1266406659, now seen corresponding path program 1 times [2020-11-12 12:29:01,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:29:01,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533425495] [2020-11-12 12:29:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:29:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:29:02,282 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 12:29:02,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533425495] [2020-11-12 12:29:02,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:29:02,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:29:02,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034899383] [2020-11-12 12:29:02,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:29:02,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:29:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:29:02,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:29:02,364 INFO L87 Difference]: Start difference. First operand has 33527 states, 30624 states have (on average 1.1925287356321839) internal successors, (36520), 33526 states have internal predecessors, (36520), 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 12:29:02,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:29:02,737 INFO L93 Difference]: Finished difference Result 12663 states and 14447 transitions. [2020-11-12 12:29:02,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:29:02,739 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 12:29:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:29:02,784 INFO L225 Difference]: With dead ends: 12663 [2020-11-12 12:29:02,784 INFO L226 Difference]: Without dead ends: 3710 [2020-11-12 12:29:02,787 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:29:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2020-11-12 12:29:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3710. [2020-11-12 12:29:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3514 states have (on average 1.3042117245304496) internal successors, (4583), 3709 states have internal predecessors, (4583), 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 12:29:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 4583 transitions. [2020-11-12 12:29:03,058 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 4583 transitions. Word has length 42 [2020-11-12 12:29:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:29:03,059 INFO L481 AbstractCegarLoop]: Abstraction has 3710 states and 4583 transitions. [2020-11-12 12:29:03,059 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 12:29:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 4583 transitions. [2020-11-12 12:29:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-12 12:29:03,066 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:29:03,066 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:29:03,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:29:03,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:29:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:29:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash -805653918, now seen corresponding path program 1 times [2020-11-12 12:29:03,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:29:03,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954901422] [2020-11-12 12:29:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:29:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:29:03,224 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 12:29:03,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954901422] [2020-11-12 12:29:03,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:29:03,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:29:03,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080681417] [2020-11-12 12:29:03,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:29:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:29:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:29:03,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:29:03,231 INFO L87 Difference]: Start difference. First operand 3710 states and 4583 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:29:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:29:03,398 INFO L93 Difference]: Finished difference Result 5894 states and 7333 transitions. [2020-11-12 12:29:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:29:03,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-12 12:29:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:29:03,411 INFO L225 Difference]: With dead ends: 5894 [2020-11-12 12:29:03,412 INFO L226 Difference]: Without dead ends: 2493 [2020-11-12 12:29:03,413 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 12:29:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-11-12 12:29:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2020-11-12 12:29:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2353 states have (on average 1.336166595835104) internal successors, (3144), 2492 states have internal predecessors, (3144), 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 12:29:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3144 transitions. [2020-11-12 12:29:03,541 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3144 transitions. Word has length 45 [2020-11-12 12:29:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:29:03,542 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 3144 transitions. [2020-11-12 12:29:03,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:29:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3144 transitions. [2020-11-12 12:29:03,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:29:03,550 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:29:03,550 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 12:29:03,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:29:03,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:29:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:29:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash 821880729, now seen corresponding path program 1 times [2020-11-12 12:29:03,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:29:03,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280080779] [2020-11-12 12:29:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:29:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:29:03,746 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 12:29:03,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280080779] [2020-11-12 12:29:03,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:29:03,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:29:03,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209300500] [2020-11-12 12:29:03,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:29:03,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:29:03,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:29:03,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:29:03,749 INFO L87 Difference]: Start difference. First operand 2493 states and 3144 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 12:29:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:29:03,891 INFO L93 Difference]: Finished difference Result 2763 states and 3326 transitions. [2020-11-12 12:29:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:29:03,891 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 12:29:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:29:03,903 INFO L225 Difference]: With dead ends: 2763 [2020-11-12 12:29:03,903 INFO L226 Difference]: Without dead ends: 2335 [2020-11-12 12:29:03,904 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 12:29:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2020-11-12 12:29:03,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2335. [2020-11-12 12:29:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2203 states have (on average 1.3104857013163866) internal successors, (2887), 2334 states have internal predecessors, (2887), 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 12:29:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 2887 transitions. [2020-11-12 12:29:03,967 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 2887 transitions. Word has length 47 [2020-11-12 12:29:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:29:03,967 INFO L481 AbstractCegarLoop]: Abstraction has 2335 states and 2887 transitions. [2020-11-12 12:29:03,968 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 12:29:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 2887 transitions. [2020-11-12 12:29:03,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:29:03,972 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:29:03,972 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 12:29:03,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:29:03,973 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:29:03,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:29:03,974 INFO L82 PathProgramCache]: Analyzing trace with hash 296373738, now seen corresponding path program 1 times [2020-11-12 12:29:03,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:29:03,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162135998] [2020-11-12 12:29:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:29:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:29:04,223 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 12:29:04,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162135998] [2020-11-12 12:29:04,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:29:04,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:29:04,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264723178] [2020-11-12 12:29:04,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:29:04,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:29:04,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:29:04,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:29:04,226 INFO L87 Difference]: Start difference. First operand 2335 states and 2887 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 12:29:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:29:04,401 INFO L93 Difference]: Finished difference Result 2138 states and 2527 transitions. [2020-11-12 12:29:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:29:04,402 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 12:29:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:29:04,410 INFO L225 Difference]: With dead ends: 2138 [2020-11-12 12:29:04,410 INFO L226 Difference]: Without dead ends: 1587 [2020-11-12 12:29:04,411 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:29:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-11-12 12:29:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1587. [2020-11-12 12:29:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1497 states have (on average 1.2271209084836339) internal successors, (1837), 1586 states have internal predecessors, (1837), 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 12:29:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 1837 transitions. [2020-11-12 12:29:04,457 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 1837 transitions. Word has length 48 [2020-11-12 12:29:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:29:04,458 INFO L481 AbstractCegarLoop]: Abstraction has 1587 states and 1837 transitions. [2020-11-12 12:29:04,458 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 12:29:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 1837 transitions. [2020-11-12 12:29:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:29:04,462 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:29:04,462 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 12:29:04,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:29:04,463 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:29:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:29:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash 115705963, now seen corresponding path program 1 times [2020-11-12 12:29:04,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:29:04,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211214194] [2020-11-12 12:29:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:29:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:29:04,614 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 12:29:04,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211214194] [2020-11-12 12:29:04,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:29:04,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:29:04,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138274988] [2020-11-12 12:29:04,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:29:04,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:29:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:29:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:29:04,617 INFO L87 Difference]: Start difference. First operand 1587 states and 1837 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 12:29:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:29:04,798 INFO L93 Difference]: Finished difference Result 1039 states and 1190 transitions. [2020-11-12 12:29:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:29:04,799 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 12:29:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:29:04,802 INFO L225 Difference]: With dead ends: 1039 [2020-11-12 12:29:04,802 INFO L226 Difference]: Without dead ends: 538 [2020-11-12 12:29:04,802 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:29:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-11-12 12:29:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2020-11-12 12:29:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 511 states have (on average 1.1272015655577299) internal successors, (576), 537 states have internal predecessors, (576), 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 12:29:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 576 transitions. [2020-11-12 12:29:04,817 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 576 transitions. Word has length 50 [2020-11-12 12:29:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:29:04,818 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 576 transitions. [2020-11-12 12:29:04,818 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 12:29:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 576 transitions. [2020-11-12 12:29:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:29:04,820 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:29:04,820 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 12:29:04,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:29:04,821 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:29:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:29:04,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1879306967, now seen corresponding path program 1 times [2020-11-12 12:29:04,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:29:04,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811260019] [2020-11-12 12:29:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:29:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:29:04,944 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 12:29:04,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811260019] [2020-11-12 12:29:04,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:29:04,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:29:04,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769317496] [2020-11-12 12:29:04,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:29:04,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:29:04,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:29:04,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:29:04,947 INFO L87 Difference]: Start difference. First operand 538 states and 576 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 12:29:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:29:05,037 INFO L93 Difference]: Finished difference Result 840 states and 881 transitions. [2020-11-12 12:29:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:29:05,037 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 12:29:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:29:05,040 INFO L225 Difference]: With dead ends: 840 [2020-11-12 12:29:05,040 INFO L226 Difference]: Without dead ends: 459 [2020-11-12 12:29:05,040 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 12:29:05,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-11-12 12:29:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2020-11-12 12:29:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 432 states have (on average 1.0810185185185186) internal successors, (467), 458 states have internal predecessors, (467), 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 12:29:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 467 transitions. [2020-11-12 12:29:05,051 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 467 transitions. Word has length 54 [2020-11-12 12:29:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:29:05,051 INFO L481 AbstractCegarLoop]: Abstraction has 459 states and 467 transitions. [2020-11-12 12:29:05,051 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 12:29:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 467 transitions. [2020-11-12 12:29:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:29:05,053 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:29:05,053 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:29:05,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:29:05,053 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:29:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:29:05,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1783984121, now seen corresponding path program 2 times [2020-11-12 12:29:05,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:29:05,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365728266] [2020-11-12 12:29:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:29:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:29:05,181 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 12:29:05,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365728266] [2020-11-12 12:29:05,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:29:05,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:29:05,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270952915] [2020-11-12 12:29:05,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:29:05,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:29:05,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:29:05,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:29:05,183 INFO L87 Difference]: Start difference. First operand 459 states and 467 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 12:29:05,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:29:05,298 INFO L93 Difference]: Finished difference Result 351 states and 359 transitions. [2020-11-12 12:29:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:29:05,298 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 12:29:05,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:29:05,298 INFO L225 Difference]: With dead ends: 351 [2020-11-12 12:29:05,299 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:29:05,300 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:29:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:29:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:29:05,300 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 12:29:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:29:05,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-12 12:29:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:29:05,301 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:29:05,301 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 12:29:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:29:05,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:29:05,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:29:05,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:29:05 BasicIcfg [2020-11-12 12:29:05,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:29:05,311 INFO L168 Benchmark]: Toolchain (without parser) took 7639.62 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 857.7 MB). Free memory was 277.0 MB in the beginning and 983.8 MB in the end (delta: -706.7 MB). Peak memory consumption was 153.6 MB. Max. memory is 16.0 GB. [2020-11-12 12:29:05,313 INFO L168 Benchmark]: CDTParser took 0.18 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 12:29:05,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.07 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-11-12 12:29:05,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 243.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:29:05,320 INFO L168 Benchmark]: Boogie Preprocessor took 30.77 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:29:05,321 INFO L168 Benchmark]: RCFGBuilder took 477.82 ms. Allocated memory is still 302.0 MB. Free memory was 242.3 MB in the beginning and 264.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:29:05,322 INFO L168 Benchmark]: TraceAbstraction took 6410.90 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 857.7 MB). Free memory was 264.6 MB in the beginning and 983.8 MB in the end (delta: -719.2 MB). Peak memory consumption was 138.6 MB. Max. memory is 16.0 GB. [2020-11-12 12:29:05,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 655.07 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 245.5 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 243.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.77 ms. Allocated memory is still 302.0 MB. Free memory was 243.6 MB in the beginning and 242.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 477.82 ms. Allocated memory is still 302.0 MB. Free memory was 242.3 MB in the beginning and 264.6 MB in the end (delta: -22.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6410.90 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 857.7 MB). Free memory was 264.6 MB in the beginning and 983.8 MB in the end (delta: -719.2 MB). Peak memory consumption was 138.6 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: 6.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 460 SDtfs, 567 SDslu, 1703 SDs, 0 SdLazy, 223 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33527occurred 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, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 333 ConstructedInterpolants, 0 QuantifiedInterpolants, 40081 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...