/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:50:29,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:50:29,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:50:29,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:50:29,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:50:29,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:50:29,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:50:29,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:50:29,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:50:29,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:50:29,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:50:29,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:50:29,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:50:29,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:50:29,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:50:29,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:50:29,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:50:29,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:50:29,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:50:29,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:50:29,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:50:29,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:50:29,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:50:29,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:50:29,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:50:29,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:50:29,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:50:29,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:50:29,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:50:29,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:50:29,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:50:29,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:50:29,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:50:29,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:50:29,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:50:29,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:50:29,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:50:29,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:50:29,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:50:29,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:50:29,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:50:29,897 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:50:29,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:50:29,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:50:29,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:50:29,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:50:29,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:50:29,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:50:29,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:50:29,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:50:29,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:50:29,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:50:29,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:50:29,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:50:29,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:50:29,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:50:29,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:50:29,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:50:29,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:50:29,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:50:29,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:50:29,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:50:29,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:50:29,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:50:29,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:50:29,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:50:29,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:50:30,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:50:30,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:50:30,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:50:30,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:50:30,394 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:50:30,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2020-11-09 12:50:30,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0acb38b52/6333b21488b94747806f08e1bad5a980/FLAG2c52a5047 [2020-11-09 12:50:31,328 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:50:31,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2020-11-09 12:50:31,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0acb38b52/6333b21488b94747806f08e1bad5a980/FLAG2c52a5047 [2020-11-09 12:50:31,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0acb38b52/6333b21488b94747806f08e1bad5a980 [2020-11-09 12:50:31,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:50:31,527 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:50:31,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:50:31,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:50:31,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:50:31,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:31" (1/1) ... [2020-11-09 12:50:31,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2d9cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:31, skipping insertion in model container [2020-11-09 12:50:31,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:31" (1/1) ... [2020-11-09 12:50:31,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:50:31,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:50:32,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:50:32,163 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:50:32,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:50:32,454 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:50:32,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32 WrapperNode [2020-11-09 12:50:32,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:50:32,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:50:32,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:50:32,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:50:32,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:50:32,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:50:32,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:50:32,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:50:32,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (1/1) ... [2020-11-09 12:50:32,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:50:32,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:50:32,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:50:32,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:50:32,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (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 [2020-11-09 12:50:32,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:50:32,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:50:32,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:50:32,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:50:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:50:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:50:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:50:32,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:50:32,633 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:50:32,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:50:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:50:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:50:32,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:50:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:50:32,637 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:50:33,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:50:33,166 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:50:33,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:33 BoogieIcfgContainer [2020-11-09 12:50:33,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:50:33,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:50:33,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:50:33,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:50:33,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:50:31" (1/3) ... [2020-11-09 12:50:33,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9b7d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:50:33, skipping insertion in model container [2020-11-09 12:50:33,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:32" (2/3) ... [2020-11-09 12:50:33,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9b7d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:50:33, skipping insertion in model container [2020-11-09 12:50:33,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:33" (3/3) ... [2020-11-09 12:50:33,180 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2020-11-09 12:50:33,198 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:50:33,199 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:50:33,204 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:50:33,205 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:50:33,246 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,246 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,252 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,252 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,258 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,258 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,266 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,266 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,270 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,270 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,271 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:33,275 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:50:33,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:50:33,313 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:50:33,313 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:50:33,313 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:50:33,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:50:33,314 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:50:33,314 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:50:33,314 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:50:33,314 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:50:33,327 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:50:33,330 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-09 12:50:33,333 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-09 12:50:33,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-09 12:50:33,383 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-09 12:50:33,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:50:33,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:50:33,391 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:50:35,680 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-09 12:50:35,848 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-09 12:50:37,591 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-09 12:50:37,716 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 12:50:37,980 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-09 12:50:38,096 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 12:50:38,424 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-09 12:50:38,525 INFO L131 LiptonReduction]: Checked pairs total: 3412 [2020-11-09 12:50:38,525 INFO L133 LiptonReduction]: Total number of compositions: 77 [2020-11-09 12:50:38,534 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:50:38,562 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:50:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:50:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:50:38,572 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:38,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:38,574 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:38,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1698580066, now seen corresponding path program 1 times [2020-11-09 12:50:38,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:38,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525160770] [2020-11-09 12:50:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:38,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525160770] [2020-11-09 12:50:38,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:38,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:50:38,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637102021] [2020-11-09 12:50:38,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:50:38,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:50:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:38,880 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:50:38,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:38,947 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 12:50:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:50:38,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:50:38,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:38,981 INFO L225 Difference]: With dead ends: 282 [2020-11-09 12:50:38,981 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 12:50:38,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 12:50:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 12:50:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 12:50:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 12:50:39,113 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 12:50:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:39,114 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 12:50:39,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:50:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 12:50:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:50:39,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:39,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:39,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:50:39,119 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:39,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1116373545, now seen corresponding path program 1 times [2020-11-09 12:50:39,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:39,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409561890] [2020-11-09 12:50:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:39,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409561890] [2020-11-09 12:50:39,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:39,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:50:39,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144540751] [2020-11-09 12:50:39,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:39,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:39,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:39,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:39,232 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 12:50:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:39,263 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-09 12:50:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:39,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:50:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:39,266 INFO L225 Difference]: With dead ends: 242 [2020-11-09 12:50:39,266 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 12:50:39,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 12:50:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 12:50:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 12:50:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 12:50:39,281 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-09 12:50:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:39,281 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 12:50:39,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 12:50:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:50:39,283 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:39,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:39,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:50:39,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:39,292 INFO L82 PathProgramCache]: Analyzing trace with hash -906978528, now seen corresponding path program 1 times [2020-11-09 12:50:39,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:39,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495396950] [2020-11-09 12:50:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:39,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495396950] [2020-11-09 12:50:39,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:39,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:50:39,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487283395] [2020-11-09 12:50:39,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:39,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:39,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:39,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:39,429 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-11-09 12:50:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:39,466 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-11-09 12:50:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:50:39,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 12:50:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:39,469 INFO L225 Difference]: With dead ends: 165 [2020-11-09 12:50:39,469 INFO L226 Difference]: Without dead ends: 125 [2020-11-09 12:50:39,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:39,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-09 12:50:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-09 12:50:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-09 12:50:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-11-09 12:50:39,479 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-11-09 12:50:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:39,479 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-11-09 12:50:39,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-11-09 12:50:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:50:39,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:39,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:39,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:50:39,481 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:39,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1053183531, now seen corresponding path program 1 times [2020-11-09 12:50:39,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:39,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649382101] [2020-11-09 12:50:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:39,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649382101] [2020-11-09 12:50:39,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:39,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:39,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433361563] [2020-11-09 12:50:39,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:50:39,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:50:39,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:39,572 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-11-09 12:50:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:39,628 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-09 12:50:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:50:39,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 12:50:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:39,630 INFO L225 Difference]: With dead ends: 122 [2020-11-09 12:50:39,631 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 12:50:39,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:50:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 12:50:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 12:50:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 12:50:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-09 12:50:39,641 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-11-09 12:50:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:39,641 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-09 12:50:39,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:50:39,643 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-09 12:50:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:50:39,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:39,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:39,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:50:39,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:39,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1529886427, now seen corresponding path program 1 times [2020-11-09 12:50:39,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:39,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880504492] [2020-11-09 12:50:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:39,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880504492] [2020-11-09 12:50:39,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:39,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:50:39,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567275933] [2020-11-09 12:50:39,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:50:39,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:39,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:50:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:50:39,759 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-11-09 12:50:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:39,807 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-11-09 12:50:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:50:39,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-09 12:50:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:39,809 INFO L225 Difference]: With dead ends: 92 [2020-11-09 12:50:39,809 INFO L226 Difference]: Without dead ends: 84 [2020-11-09 12:50:39,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:50:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-09 12:50:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-09 12:50:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-09 12:50:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-11-09 12:50:39,814 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-11-09 12:50:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:39,815 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-11-09 12:50:39,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:50:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-11-09 12:50:39,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:50:39,816 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:39,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:39,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:50:39,817 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:39,817 INFO L82 PathProgramCache]: Analyzing trace with hash 212367058, now seen corresponding path program 1 times [2020-11-09 12:50:39,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:39,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622923087] [2020-11-09 12:50:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:39,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622923087] [2020-11-09 12:50:39,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:39,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:39,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359420115] [2020-11-09 12:50:39,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:39,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:39,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:39,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:39,890 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-11-09 12:50:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:39,908 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-11-09 12:50:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:39,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:50:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:39,910 INFO L225 Difference]: With dead ends: 97 [2020-11-09 12:50:39,910 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 12:50:39,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 12:50:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 12:50:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 12:50:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-09 12:50:39,913 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-11-09 12:50:39,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:39,914 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-09 12:50:39,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-09 12:50:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:50:39,915 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:39,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:39,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:50:39,916 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:39,916 INFO L82 PathProgramCache]: Analyzing trace with hash 671694040, now seen corresponding path program 2 times [2020-11-09 12:50:39,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:39,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936171770] [2020-11-09 12:50:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:39,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936171770] [2020-11-09 12:50:39,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:39,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:39,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070443877] [2020-11-09 12:50:39,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:39,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:39,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:39,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:39,979 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-09 12:50:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:39,997 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-09 12:50:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:39,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:50:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:39,998 INFO L225 Difference]: With dead ends: 35 [2020-11-09 12:50:39,998 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:50:39,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:50:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:50:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:50:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:50:40,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:50:40,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:40,001 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:50:40,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:50:40,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:50:40,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:50:40,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:50:40 BasicIcfg [2020-11-09 12:50:40,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:50:40,010 INFO L168 Benchmark]: Toolchain (without parser) took 8485.35 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 128.0 MB in the beginning and 96.6 MB in the end (delta: 31.4 MB). Peak memory consumption was 102.2 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:40,014 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 154.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:50:40,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 926.48 ms. Allocated memory is still 154.1 MB. Free memory was 127.4 MB in the beginning and 129.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:40,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 154.1 MB. Free memory was 129.9 MB in the beginning and 127.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:40,018 INFO L168 Benchmark]: Boogie Preprocessor took 29.38 ms. Allocated memory is still 154.1 MB. Free memory was 127.8 MB in the beginning and 126.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:40,018 INFO L168 Benchmark]: RCFGBuilder took 628.79 ms. Allocated memory is still 154.1 MB. Free memory was 126.2 MB in the beginning and 104.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:40,022 INFO L168 Benchmark]: TraceAbstraction took 6835.07 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 103.6 MB in the beginning and 96.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 77.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:40,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 154.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 926.48 ms. Allocated memory is still 154.1 MB. Free memory was 127.4 MB in the beginning and 129.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 154.1 MB. Free memory was 129.9 MB in the beginning and 127.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.38 ms. Allocated memory is still 154.1 MB. Free memory was 127.8 MB in the beginning and 126.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 628.79 ms. Allocated memory is still 154.1 MB. Free memory was 126.2 MB in the beginning and 104.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6835.07 ms. Allocated memory was 154.1 MB in the beginning and 223.3 MB in the end (delta: 69.2 MB). Free memory was 103.6 MB in the beginning and 96.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 77.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1073 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 105 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.1s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 77 TotalNumberOfCompositions, 3412 MoverChecksTotal - 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 136 SDtfs, 132 SDslu, 188 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 2789 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...