/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:12:08,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:12:08,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:12:08,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:12:08,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:12:08,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:12:08,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:12:09,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:12:09,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:12:09,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:12:09,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:12:09,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:12:09,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:12:09,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:12:09,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:12:09,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:12:09,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:12:09,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:12:09,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:12:09,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:12:09,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:12:09,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:12:09,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:12:09,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:12:09,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:12:09,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:12:09,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:12:09,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:12:09,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:12:09,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:12:09,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:12:09,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:12:09,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:12:09,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:12:09,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:12:09,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:12:09,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 18:12:09,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:12:09,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:12:09,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:12:09,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:12:09,129 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:12:09,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:12:09,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:12:09,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:12:09,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:12:09,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:12:09,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:12:09,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:12:09,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:12:09,132 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:12:09,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:12:09,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:12:09,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:12:09,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:12:09,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:12:09,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:12:09,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:12:09,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:12:09,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:12:09,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:12:09,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:12:09,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:12:09,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:12:09,135 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:12:09,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:12:09,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:12:09,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:12:09,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:12:09,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:12:09,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:12:09,584 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:12:09,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-11-11 18:12:09,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e009b7f/1d1d6d0fe4674019bab262327efcd93e/FLAGfd65986b1 [2020-11-11 18:12:10,453 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:12:10,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-11-11 18:12:10,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e009b7f/1d1d6d0fe4674019bab262327efcd93e/FLAGfd65986b1 [2020-11-11 18:12:10,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e009b7f/1d1d6d0fe4674019bab262327efcd93e [2020-11-11 18:12:10,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:12:10,750 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:12:10,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:12:10,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:12:10,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:12:10,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:12:10" (1/1) ... [2020-11-11 18:12:10,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67098c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:10, skipping insertion in model container [2020-11-11 18:12:10,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:12:10" (1/1) ... [2020-11-11 18:12:10,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:12:10,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:12:11,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:12:11,286 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:12:11,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:12:11,476 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:12:11,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11 WrapperNode [2020-11-11 18:12:11,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:12:11,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:12:11,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:12:11,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:12:11,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:12:11,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:12:11,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:12:11,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:12:11,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (1/1) ... [2020-11-11 18:12:11,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:12:11,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:12:11,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:12:11,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:12:11,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (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 [2020-11-11 18:12:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:12:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:12:11,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:12:11,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:12:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:12:11,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:12:11,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:12:11,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:12:11,713 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:12:11,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:12:11,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:12:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:12:11,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:12:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:12:11,717 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:12:12,220 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:12:12,220 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:12:12,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:12:12 BoogieIcfgContainer [2020-11-11 18:12:12,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:12:12,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:12:12,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:12:12,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:12:12,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:12:10" (1/3) ... [2020-11-11 18:12:12,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31364b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:12:12, skipping insertion in model container [2020-11-11 18:12:12,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:12:11" (2/3) ... [2020-11-11 18:12:12,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31364b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:12:12, skipping insertion in model container [2020-11-11 18:12:12,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:12:12" (3/3) ... [2020-11-11 18:12:12,231 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-11-11 18:12:12,246 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:12:12,246 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:12:12,250 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:12:12,251 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:12:12,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,292 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,292 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,294 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,297 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,301 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:12:12,321 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:12:12,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:12:12,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:12:12,357 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:12:12,357 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:12:12,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:12:12,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:12:12,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:12:12,358 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:12:12,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:12:12,369 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-11 18:12:13,105 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) [2020-11-11 18:12:13,145 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2020-11-11 18:12:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:12:13,194 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:13,195 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] [2020-11-11 18:12:13,196 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:13,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash 143249805, now seen corresponding path program 1 times [2020-11-11 18:12:13,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:13,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622779555] [2020-11-11 18:12:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:13,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622779555] [2020-11-11 18:12:13,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:13,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:13,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833134577] [2020-11-11 18:12:13,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:13,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:13,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:13,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:13,743 INFO L87 Difference]: Start difference. First operand 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) 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) [2020-11-11 18:12:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:14,188 INFO L93 Difference]: Finished difference Result 12200 states and 42464 transitions. [2020-11-11 18:12:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:14,191 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 [2020-11-11 18:12:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:14,256 INFO L225 Difference]: With dead ends: 12200 [2020-11-11 18:12:14,256 INFO L226 Difference]: Without dead ends: 4605 [2020-11-11 18:12:14,257 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 [2020-11-11 18:12:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2020-11-11 18:12:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4605. [2020-11-11 18:12:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4605 states, 4604 states have (on average 3.415291051259774) internal successors, (15724), 4604 states have internal predecessors, (15724), 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) [2020-11-11 18:12:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 15724 transitions. [2020-11-11 18:12:14,804 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 15724 transitions. Word has length 42 [2020-11-11 18:12:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:14,805 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states and 15724 transitions. [2020-11-11 18:12:14,806 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) [2020-11-11 18:12:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 15724 transitions. [2020-11-11 18:12:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:12:14,823 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:14,824 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] [2020-11-11 18:12:14,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:12:14,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash -521439444, now seen corresponding path program 1 times [2020-11-11 18:12:14,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:14,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109159380] [2020-11-11 18:12:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:14,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109159380] [2020-11-11 18:12:14,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:14,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:14,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536924760] [2020-11-11 18:12:14,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:14,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:14,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:14,997 INFO L87 Difference]: Start difference. First operand 4605 states and 15724 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:15,251 INFO L93 Difference]: Finished difference Result 5345 states and 18041 transitions. [2020-11-11 18:12:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:15,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-11 18:12:15,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:15,297 INFO L225 Difference]: With dead ends: 5345 [2020-11-11 18:12:15,298 INFO L226 Difference]: Without dead ends: 4365 [2020-11-11 18:12:15,299 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 [2020-11-11 18:12:15,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2020-11-11 18:12:15,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 4365. [2020-11-11 18:12:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4364 states have (on average 3.3941338221814847) internal successors, (14812), 4364 states have internal predecessors, (14812), 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) [2020-11-11 18:12:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 14812 transitions. [2020-11-11 18:12:15,490 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 14812 transitions. Word has length 44 [2020-11-11 18:12:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:15,491 INFO L481 AbstractCegarLoop]: Abstraction has 4365 states and 14812 transitions. [2020-11-11 18:12:15,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 14812 transitions. [2020-11-11 18:12:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-11 18:12:15,557 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:15,557 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] [2020-11-11 18:12:15,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:12:15,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash -95566873, now seen corresponding path program 1 times [2020-11-11 18:12:15,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:15,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034540955] [2020-11-11 18:12:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:15,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034540955] [2020-11-11 18:12:15,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:15,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:15,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092329542] [2020-11-11 18:12:15,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:15,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:15,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:15,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:15,753 INFO L87 Difference]: Start difference. First operand 4365 states and 14812 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:16,008 INFO L93 Difference]: Finished difference Result 5605 states and 18839 transitions. [2020-11-11 18:12:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:12:16,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-11 18:12:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:16,036 INFO L225 Difference]: With dead ends: 5605 [2020-11-11 18:12:16,036 INFO L226 Difference]: Without dead ends: 3030 [2020-11-11 18:12:16,037 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:12:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2020-11-11 18:12:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3030. [2020-11-11 18:12:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 3.2756685374711125) internal successors, (9922), 3029 states have internal predecessors, (9922), 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) [2020-11-11 18:12:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 9922 transitions. [2020-11-11 18:12:16,183 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 9922 transitions. Word has length 46 [2020-11-11 18:12:16,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:16,183 INFO L481 AbstractCegarLoop]: Abstraction has 3030 states and 9922 transitions. [2020-11-11 18:12:16,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:12:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 9922 transitions. [2020-11-11 18:12:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:12:16,191 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:16,191 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] [2020-11-11 18:12:16,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:12:16,192 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:16,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1701093113, now seen corresponding path program 1 times [2020-11-11 18:12:16,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:16,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729425364] [2020-11-11 18:12:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:16,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729425364] [2020-11-11 18:12:16,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:16,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:16,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454446965] [2020-11-11 18:12:16,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:16,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:16,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:16,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:16,334 INFO L87 Difference]: Start difference. First operand 3030 states and 9922 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) [2020-11-11 18:12:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:16,512 INFO L93 Difference]: Finished difference Result 3718 states and 12008 transitions. [2020-11-11 18:12:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:12:16,513 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 [2020-11-11 18:12:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:16,537 INFO L225 Difference]: With dead ends: 3718 [2020-11-11 18:12:16,538 INFO L226 Difference]: Without dead ends: 2766 [2020-11-11 18:12:16,538 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 [2020-11-11 18:12:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2020-11-11 18:12:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2766. [2020-11-11 18:12:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2765 states have (on average 3.228209764918626) internal successors, (8926), 2765 states have internal predecessors, (8926), 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) [2020-11-11 18:12:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 8926 transitions. [2020-11-11 18:12:16,671 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 8926 transitions. Word has length 47 [2020-11-11 18:12:16,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:16,671 INFO L481 AbstractCegarLoop]: Abstraction has 2766 states and 8926 transitions. [2020-11-11 18:12:16,672 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) [2020-11-11 18:12:16,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 8926 transitions. [2020-11-11 18:12:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:12:16,679 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:16,679 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] [2020-11-11 18:12:16,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:12:16,679 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:16,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1482952598, now seen corresponding path program 1 times [2020-11-11 18:12:16,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:16,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513585612] [2020-11-11 18:12:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:16,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513585612] [2020-11-11 18:12:16,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:16,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:16,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920515796] [2020-11-11 18:12:16,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:16,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:16,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:16,809 INFO L87 Difference]: Start difference. First operand 2766 states and 8926 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) [2020-11-11 18:12:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:17,001 INFO L93 Difference]: Finished difference Result 2772 states and 8669 transitions. [2020-11-11 18:12:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:12:17,002 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 [2020-11-11 18:12:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:17,011 INFO L225 Difference]: With dead ends: 2772 [2020-11-11 18:12:17,011 INFO L226 Difference]: Without dead ends: 1980 [2020-11-11 18:12:17,011 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 [2020-11-11 18:12:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-11-11 18:12:17,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1980. [2020-11-11 18:12:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1979 states have (on average 3.0768064679130873) internal successors, (6089), 1979 states have internal predecessors, (6089), 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) [2020-11-11 18:12:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 6089 transitions. [2020-11-11 18:12:17,075 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 6089 transitions. Word has length 48 [2020-11-11 18:12:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:17,075 INFO L481 AbstractCegarLoop]: Abstraction has 1980 states and 6089 transitions. [2020-11-11 18:12:17,075 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) [2020-11-11 18:12:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 6089 transitions. [2020-11-11 18:12:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:12:17,080 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:17,081 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] [2020-11-11 18:12:17,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:12:17,081 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:17,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2070133385, now seen corresponding path program 1 times [2020-11-11 18:12:17,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:17,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178584352] [2020-11-11 18:12:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:17,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178584352] [2020-11-11 18:12:17,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:17,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:12:17,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479585989] [2020-11-11 18:12:17,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:12:17,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:12:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:12:17,279 INFO L87 Difference]: Start difference. First operand 1980 states and 6089 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) [2020-11-11 18:12:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:17,558 INFO L93 Difference]: Finished difference Result 1503 states and 4436 transitions. [2020-11-11 18:12:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:12:17,559 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 [2020-11-11 18:12:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:17,570 INFO L225 Difference]: With dead ends: 1503 [2020-11-11 18:12:17,571 INFO L226 Difference]: Without dead ends: 1071 [2020-11-11 18:12:17,571 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 [2020-11-11 18:12:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-11-11 18:12:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2020-11-11 18:12:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 2.858878504672897) internal successors, (3059), 1070 states have internal predecessors, (3059), 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) [2020-11-11 18:12:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 3059 transitions. [2020-11-11 18:12:17,602 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 3059 transitions. Word has length 50 [2020-11-11 18:12:17,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:17,603 INFO L481 AbstractCegarLoop]: Abstraction has 1071 states and 3059 transitions. [2020-11-11 18:12:17,603 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) [2020-11-11 18:12:17,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 3059 transitions. [2020-11-11 18:12:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:12:17,607 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:17,607 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] [2020-11-11 18:12:17,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:12:17,607 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:17,608 INFO L82 PathProgramCache]: Analyzing trace with hash 2090541767, now seen corresponding path program 1 times [2020-11-11 18:12:17,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:17,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598091903] [2020-11-11 18:12:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:17,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598091903] [2020-11-11 18:12:17,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:17,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:12:17,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460591813] [2020-11-11 18:12:17,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:12:17,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:12:17,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:12:17,755 INFO L87 Difference]: Start difference. First operand 1071 states and 3059 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) [2020-11-11 18:12:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:17,857 INFO L93 Difference]: Finished difference Result 1474 states and 4236 transitions. [2020-11-11 18:12:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:12:17,857 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 [2020-11-11 18:12:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:17,860 INFO L225 Difference]: With dead ends: 1474 [2020-11-11 18:12:17,860 INFO L226 Difference]: Without dead ends: 731 [2020-11-11 18:12:17,861 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 [2020-11-11 18:12:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-11-11 18:12:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2020-11-11 18:12:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 2.8068493150684932) internal successors, (2049), 730 states have internal predecessors, (2049), 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) [2020-11-11 18:12:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2049 transitions. [2020-11-11 18:12:17,887 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2049 transitions. Word has length 54 [2020-11-11 18:12:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:17,888 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 2049 transitions. [2020-11-11 18:12:17,888 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) [2020-11-11 18:12:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2049 transitions. [2020-11-11 18:12:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-11 18:12:17,890 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:12:17,890 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] [2020-11-11 18:12:17,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:12:17,891 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:12:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:12:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash -996669883, now seen corresponding path program 2 times [2020-11-11 18:12:17,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:12:17,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287056727] [2020-11-11 18:12:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:12:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:12:18,114 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-11-11 18:12:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:12:18,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287056727] [2020-11-11 18:12:18,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:12:18,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:12:18,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685682298] [2020-11-11 18:12:18,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:12:18,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:12:18,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:12:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:12:18,177 INFO L87 Difference]: Start difference. First operand 731 states and 2049 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) [2020-11-11 18:12:18,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:12:18,242 INFO L93 Difference]: Finished difference Result 623 states and 1725 transitions. [2020-11-11 18:12:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 18:12:18,242 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 [2020-11-11 18:12:18,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:12:18,243 INFO L225 Difference]: With dead ends: 623 [2020-11-11 18:12:18,243 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:12:18,243 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-11 18:12:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:12:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:12:18,244 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) [2020-11-11 18:12:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:12:18,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-11 18:12:18,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:12:18,244 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:12:18,245 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) [2020-11-11 18:12:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:12:18,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:12:18,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:12:18,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:12:18 BasicIcfg [2020-11-11 18:12:18,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:12:18,253 INFO L168 Benchmark]: Toolchain (without parser) took 7507.48 ms. Allocated memory was 302.0 MB in the beginning and 866.1 MB in the end (delta: 564.1 MB). Free memory was 275.9 MB in the beginning and 625.0 MB in the end (delta: -349.1 MB). Peak memory consumption was 216.4 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:18,253 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:12:18,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.87 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 275.4 MB in the end (delta: -198.9 kB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:18,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.88 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 273.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:18,255 INFO L168 Benchmark]: Boogie Preprocessor took 57.42 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 272.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:12:18,256 INFO L168 Benchmark]: RCFGBuilder took 602.50 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 249.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:18,262 INFO L168 Benchmark]: TraceAbstraction took 6026.51 ms. Allocated memory was 302.0 MB in the beginning and 866.1 MB in the end (delta: 564.1 MB). Free memory was 249.2 MB in the beginning and 625.0 MB in the end (delta: -375.7 MB). Peak memory consumption was 188.4 MB. Max. memory is 16.0 GB. [2020-11-11 18:12:18,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 726.87 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 275.4 MB in the end (delta: -198.9 kB). Peak memory consumption was 30.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 80.88 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 273.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 57.42 ms. Allocated memory is still 302.0 MB. Free memory was 273.4 MB in the beginning and 272.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 602.50 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 249.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6026.51 ms. Allocated memory was 302.0 MB in the beginning and 866.1 MB in the end (delta: 564.1 MB). Free memory was 249.2 MB in the beginning and 625.0 MB in the end (delta: -375.7 MB). Peak memory consumption was 188.4 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: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 757 SDtfs, 1070 SDslu, 2405 SDs, 0 SdLazy, 266 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred 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: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 46695 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...