/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:52:21,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:52:21,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:52:21,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:52:21,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 19:52:21,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:52:21,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:52:21,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:52:21,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:52:21,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:52:21,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:52:21,695 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:52:21,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:52:21,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:52:21,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:52:21,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:52:21,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:52:21,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:52:21,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:52:21,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:52:21,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:52:21,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:52:21,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:52:21,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:52:21,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:52:21,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:52:21,698 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:52:21,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:52:21,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:52:21,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:52:21,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:52:21,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:52:21,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:52:21,933 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:52:21,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-06-05 19:52:21,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5581d31a/4aff1e31403a442c999ec0364859cee8/FLAG7aa91b7d6 [2021-06-05 19:52:22,438 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:52:22,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-06-05 19:52:22,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5581d31a/4aff1e31403a442c999ec0364859cee8/FLAG7aa91b7d6 [2021-06-05 19:52:22,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5581d31a/4aff1e31403a442c999ec0364859cee8 [2021-06-05 19:52:22,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:52:22,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:52:22,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:52:22,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:52:22,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:52:22,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:52:22" (1/1) ... [2021-06-05 19:52:22,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784b2e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:22, skipping insertion in model container [2021-06-05 19:52:22,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:52:22" (1/1) ... [2021-06-05 19:52:22,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:52:22,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:52:23,138 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i[949,962] [2021-06-05 19:52:23,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:52:23,282 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:52:23,291 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i[949,962] [2021-06-05 19:52:23,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:52:23,369 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:52:23,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23 WrapperNode [2021-06-05 19:52:23,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:52:23,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:52:23,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:52:23,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:52:23,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:52:23,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:52:23,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:52:23,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:52:23,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... [2021-06-05 19:52:23,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:52:23,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:52:23,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:52:23,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:52:23,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:52:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:52:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:52:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:52:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:52:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:52:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:52:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:52:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:52:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:52:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:52:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:52:23,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:52:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:52:23,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:52:23,545 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:52:23,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:52:23,815 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:52:23,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:52:23 BoogieIcfgContainer [2021-06-05 19:52:23,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:52:23,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:52:23,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:52:23,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:52:23,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:52:22" (1/3) ... [2021-06-05 19:52:23,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f660cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:52:23, skipping insertion in model container [2021-06-05 19:52:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:52:23" (2/3) ... [2021-06-05 19:52:23,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f660cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:52:23, skipping insertion in model container [2021-06-05 19:52:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:52:23" (3/3) ... [2021-06-05 19:52:23,821 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2021-06-05 19:52:23,824 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:52:23,824 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:52:23,824 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:52:23,825 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:52:23,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,848 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,848 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,850 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,850 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,851 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,851 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,858 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,858 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,860 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,861 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,861 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,864 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,867 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:52:23,870 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:52:23,885 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:52:23,897 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:52:23,897 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:52:23,897 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:52:23,897 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:52:23,897 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:52:23,898 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:52:23,898 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:52:23,898 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:52:23,904 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-06-05 19:52:24,342 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 19:52:24,407 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:24,408 INFO L554 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] [2021-06-05 19:52:24,408 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1408065288, now seen corresponding path program 1 times [2021-06-05 19:52:24,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:24,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986658133] [2021-06-05 19:52:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:24,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:24,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986658133] [2021-06-05 19:52:24,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986658133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:24,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:24,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:24,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764722042] [2021-06-05 19:52:24,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:24,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:24,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:24,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:24,878 INFO L87 Difference]: Start difference. First operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 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 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-06-05 19:52:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:25,107 INFO L93 Difference]: Finished difference Result 12224 states and 42408 transitions. [2021-06-05 19:52:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:25,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 [2021-06-05 19:52:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:25,160 INFO L225 Difference]: With dead ends: 12224 [2021-06-05 19:52:25,160 INFO L226 Difference]: Without dead ends: 4629 [2021-06-05 19:52:25,161 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-05 19:52:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-06-05 19:52:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4629. [2021-06-05 19:52:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4628 states have (on average 3.3854796888504755) internal successors, (15668), 4628 states have internal predecessors, (15668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 15668 transitions. [2021-06-05 19:52:25,429 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 15668 transitions. Word has length 50 [2021-06-05 19:52:25,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:25,432 INFO L482 AbstractCegarLoop]: Abstraction has 4629 states and 15668 transitions. [2021-06-05 19:52:25,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-06-05 19:52:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 15668 transitions. [2021-06-05 19:52:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 19:52:25,448 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:25,448 INFO L554 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] [2021-06-05 19:52:25,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:52:25,448 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:25,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:25,452 INFO L82 PathProgramCache]: Analyzing trace with hash 452026023, now seen corresponding path program 1 times [2021-06-05 19:52:25,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:25,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693920766] [2021-06-05 19:52:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:25,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:25,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693920766] [2021-06-05 19:52:25,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693920766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:25,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:25,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:25,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763583879] [2021-06-05 19:52:25,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:25,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:25,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:25,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:25,627 INFO L87 Difference]: Start difference. First operand 4629 states and 15668 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:25,916 INFO L93 Difference]: Finished difference Result 5945 states and 20058 transitions. [2021-06-05 19:52:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 19:52:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-06-05 19:52:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:25,938 INFO L225 Difference]: With dead ends: 5945 [2021-06-05 19:52:25,938 INFO L226 Difference]: Without dead ends: 4825 [2021-06-05 19:52:25,939 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 227.2ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-05 19:52:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-06-05 19:52:26,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4825. [2021-06-05 19:52:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 3.3857794361525704) internal successors, (16333), 4824 states have internal predecessors, (16333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 16333 transitions. [2021-06-05 19:52:26,142 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 16333 transitions. Word has length 52 [2021-06-05 19:52:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:26,143 INFO L482 AbstractCegarLoop]: Abstraction has 4825 states and 16333 transitions. [2021-06-05 19:52:26,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 16333 transitions. [2021-06-05 19:52:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 19:52:26,177 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:26,178 INFO L554 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] [2021-06-05 19:52:26,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:52:26,178 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash -172126231, now seen corresponding path program 1 times [2021-06-05 19:52:26,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:26,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230813875] [2021-06-05 19:52:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:26,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:26,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230813875] [2021-06-05 19:52:26,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230813875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:26,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:26,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:52:26,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831518940] [2021-06-05 19:52:26,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:52:26,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:52:26,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:52:26,240 INFO L87 Difference]: Start difference. First operand 4825 states and 16333 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:26,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:26,330 INFO L93 Difference]: Finished difference Result 5273 states and 17697 transitions. [2021-06-05 19:52:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:26,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 19:52:26,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:26,349 INFO L225 Difference]: With dead ends: 5273 [2021-06-05 19:52:26,349 INFO L226 Difference]: Without dead ends: 4489 [2021-06-05 19:52:26,349 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2021-06-05 19:52:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4489. [2021-06-05 19:52:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4488 states have (on average 3.3692067736185383) internal successors, (15121), 4488 states have internal predecessors, (15121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 15121 transitions. [2021-06-05 19:52:26,474 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 15121 transitions. Word has length 53 [2021-06-05 19:52:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:26,474 INFO L482 AbstractCegarLoop]: Abstraction has 4489 states and 15121 transitions. [2021-06-05 19:52:26,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 15121 transitions. [2021-06-05 19:52:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:52:26,481 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:26,482 INFO L554 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] [2021-06-05 19:52:26,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:52:26,482 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:26,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1133187088, now seen corresponding path program 1 times [2021-06-05 19:52:26,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:26,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375563244] [2021-06-05 19:52:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:26,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:26,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375563244] [2021-06-05 19:52:26,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375563244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:26,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:26,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:26,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645149149] [2021-06-05 19:52:26,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:26,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:26,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:26,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:26,555 INFO L87 Difference]: Start difference. First operand 4489 states and 15121 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) [2021-06-05 19:52:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:26,844 INFO L93 Difference]: Finished difference Result 7427 states and 24905 transitions. [2021-06-05 19:52:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 19:52:26,845 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 [2021-06-05 19:52:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:26,863 INFO L225 Difference]: With dead ends: 7427 [2021-06-05 19:52:26,863 INFO L226 Difference]: Without dead ends: 5047 [2021-06-05 19:52:26,864 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 246.0ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-05 19:52:26,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-06-05 19:52:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 4447. [2021-06-05 19:52:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4447 states, 4446 states have (on average 3.3423301844354474) internal successors, (14860), 4446 states have internal predecessors, (14860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 14860 transitions. [2021-06-05 19:52:26,952 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 14860 transitions. Word has length 54 [2021-06-05 19:52:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:26,952 INFO L482 AbstractCegarLoop]: Abstraction has 4447 states and 14860 transitions. [2021-06-05 19:52:26,952 INFO L483 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) [2021-06-05 19:52:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 14860 transitions. [2021-06-05 19:52:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:52:26,959 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:26,959 INFO L554 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, 1] [2021-06-05 19:52:26,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:52:26,963 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:26,963 INFO L82 PathProgramCache]: Analyzing trace with hash 327983370, now seen corresponding path program 1 times [2021-06-05 19:52:26,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:26,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098507099] [2021-06-05 19:52:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:27,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:27,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098507099] [2021-06-05 19:52:27,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098507099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:27,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:27,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:52:27,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490018519] [2021-06-05 19:52:27,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:52:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:52:27,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:52:27,112 INFO L87 Difference]: Start difference. First operand 4447 states and 14860 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:27,222 INFO L93 Difference]: Finished difference Result 5919 states and 19684 transitions. [2021-06-05 19:52:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:52:27,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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 55 [2021-06-05 19:52:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:27,230 INFO L225 Difference]: With dead ends: 5919 [2021-06-05 19:52:27,230 INFO L226 Difference]: Without dead ends: 2879 [2021-06-05 19:52:27,231 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:52:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-06-05 19:52:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2879. [2021-06-05 19:52:27,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2878 states have (on average 3.286657400972898) internal successors, (9459), 2878 states have internal predecessors, (9459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 9459 transitions. [2021-06-05 19:52:27,291 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 9459 transitions. Word has length 55 [2021-06-05 19:52:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:27,291 INFO L482 AbstractCegarLoop]: Abstraction has 2879 states and 9459 transitions. [2021-06-05 19:52:27,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 9459 transitions. [2021-06-05 19:52:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:52:27,295 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:27,296 INFO L554 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, 1] [2021-06-05 19:52:27,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:52:27,296 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 108256550, now seen corresponding path program 1 times [2021-06-05 19:52:27,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:27,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756665053] [2021-06-05 19:52:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:27,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:27,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756665053] [2021-06-05 19:52:27,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756665053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:27,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:27,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:27,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857183032] [2021-06-05 19:52:27,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:27,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:27,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:27,391 INFO L87 Difference]: Start difference. First operand 2879 states and 9459 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:27,527 INFO L93 Difference]: Finished difference Result 4039 states and 13185 transitions. [2021-06-05 19:52:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:52:27,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-06-05 19:52:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:27,532 INFO L225 Difference]: With dead ends: 4039 [2021-06-05 19:52:27,532 INFO L226 Difference]: Without dead ends: 1799 [2021-06-05 19:52:27,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 19:52:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-06-05 19:52:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1799. [2021-06-05 19:52:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 3.131813125695217) internal successors, (5631), 1798 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 5631 transitions. [2021-06-05 19:52:27,567 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 5631 transitions. Word has length 55 [2021-06-05 19:52:27,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:27,568 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 5631 transitions. [2021-06-05 19:52:27,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 5631 transitions. [2021-06-05 19:52:27,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 19:52:27,571 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:27,571 INFO L554 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, 1, 1, 1, 1] [2021-06-05 19:52:27,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:52:27,571 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:27,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2083636199, now seen corresponding path program 1 times [2021-06-05 19:52:27,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:27,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288527343] [2021-06-05 19:52:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:27,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:27,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288527343] [2021-06-05 19:52:27,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288527343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:27,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:27,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:52:27,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232547550] [2021-06-05 19:52:27,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:52:27,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:27,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:52:27,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:52:27,629 INFO L87 Difference]: Start difference. First operand 1799 states and 5631 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:27,730 INFO L93 Difference]: Finished difference Result 2269 states and 7052 transitions. [2021-06-05 19:52:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:52:27,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 58 [2021-06-05 19:52:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:27,734 INFO L225 Difference]: With dead ends: 2269 [2021-06-05 19:52:27,735 INFO L226 Difference]: Without dead ends: 1677 [2021-06-05 19:52:27,735 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 64.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2021-06-05 19:52:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1677. [2021-06-05 19:52:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1676 states have (on average 3.113365155131265) internal successors, (5218), 1676 states have internal predecessors, (5218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 5218 transitions. [2021-06-05 19:52:27,761 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 5218 transitions. Word has length 58 [2021-06-05 19:52:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:27,761 INFO L482 AbstractCegarLoop]: Abstraction has 1677 states and 5218 transitions. [2021-06-05 19:52:27,762 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 5218 transitions. [2021-06-05 19:52:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 19:52:27,764 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:27,764 INFO L554 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, 1, 1, 1, 1, 1] [2021-06-05 19:52:27,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:52:27,764 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:27,764 INFO L82 PathProgramCache]: Analyzing trace with hash 439804712, now seen corresponding path program 1 times [2021-06-05 19:52:27,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:27,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381252096] [2021-06-05 19:52:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:27,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:27,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381252096] [2021-06-05 19:52:27,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381252096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:27,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:27,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:27,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740211463] [2021-06-05 19:52:27,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:27,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:27,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:27,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:27,825 INFO L87 Difference]: Start difference. First operand 1677 states and 5218 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:27,910 INFO L93 Difference]: Finished difference Result 1866 states and 5695 transitions. [2021-06-05 19:52:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:52:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 59 [2021-06-05 19:52:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:27,914 INFO L225 Difference]: With dead ends: 1866 [2021-06-05 19:52:27,914 INFO L226 Difference]: Without dead ends: 1362 [2021-06-05 19:52:27,915 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:52:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-06-05 19:52:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2021-06-05 19:52:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.0183688464364438) internal successors, (4108), 1361 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4108 transitions. [2021-06-05 19:52:27,935 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4108 transitions. Word has length 59 [2021-06-05 19:52:27,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:27,935 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 4108 transitions. [2021-06-05 19:52:27,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4108 transitions. [2021-06-05 19:52:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 19:52:27,938 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:27,938 INFO L554 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, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:27,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 19:52:27,938 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:27,939 INFO L82 PathProgramCache]: Analyzing trace with hash 592427241, now seen corresponding path program 1 times [2021-06-05 19:52:27,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:27,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178575175] [2021-06-05 19:52:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:28,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:28,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:28,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178575175] [2021-06-05 19:52:28,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178575175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:28,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:28,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:52:28,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462789597] [2021-06-05 19:52:28,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:52:28,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:28,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:52:28,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:52:28,011 INFO L87 Difference]: Start difference. First operand 1362 states and 4108 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:28,115 INFO L93 Difference]: Finished difference Result 1200 states and 3505 transitions. [2021-06-05 19:52:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:52:28,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 60 [2021-06-05 19:52:28,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:28,117 INFO L225 Difference]: With dead ends: 1200 [2021-06-05 19:52:28,117 INFO L226 Difference]: Without dead ends: 876 [2021-06-05 19:52:28,118 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 83.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:52:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-06-05 19:52:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2021-06-05 19:52:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.8434285714285714) internal successors, (2488), 875 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2488 transitions. [2021-06-05 19:52:28,129 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2488 transitions. Word has length 60 [2021-06-05 19:52:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:28,129 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2488 transitions. [2021-06-05 19:52:28,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2488 transitions. [2021-06-05 19:52:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-05 19:52:28,131 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:52:28,131 INFO L554 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 19:52:28,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 19:52:28,131 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:52:28,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:52:28,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1769529258, now seen corresponding path program 1 times [2021-06-05 19:52:28,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:52:28,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848647243] [2021-06-05 19:52:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:52:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:52:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:52:28,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:52:28,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848647243] [2021-06-05 19:52:28,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848647243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:52:28,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:52:28,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:52:28,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063110956] [2021-06-05 19:52:28,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:52:28,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:52:28,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:52:28,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:52:28,224 INFO L87 Difference]: Start difference. First operand 876 states and 2488 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:52:28,287 INFO L93 Difference]: Finished difference Result 822 states and 2326 transitions. [2021-06-05 19:52:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 19:52:28,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-06-05 19:52:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:52:28,287 INFO L225 Difference]: With dead ends: 822 [2021-06-05 19:52:28,287 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:52:28,287 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:52:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:52:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:52:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:52:28,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-06-05 19:52:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:52:28,288 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:52:28,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:52:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:52:28,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:52:28,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 19:52:28,290 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:52:28,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:52:28 BasicIcfg [2021-06-05 19:52:28,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:52:28,292 INFO L168 Benchmark]: Toolchain (without parser) took 5335.83 ms. Allocated memory was 367.0 MB in the beginning and 880.8 MB in the end (delta: 513.8 MB). Free memory was 329.1 MB in the beginning and 558.2 MB in the end (delta: -229.1 MB). Peak memory consumption was 286.8 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:28,292 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 367.0 MB. Free memory was 347.5 MB in the beginning and 347.4 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:52:28,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.39 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 328.9 MB in the end (delta: -13.0 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:28,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.17 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 325.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:28,293 INFO L168 Benchmark]: Boogie Preprocessor took 28.39 ms. Allocated memory is still 367.0 MB. Free memory was 325.7 MB in the beginning and 324.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:52:28,293 INFO L168 Benchmark]: RCFGBuilder took 369.28 ms. Allocated memory is still 367.0 MB. Free memory was 324.7 MB in the beginning and 299.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:28,293 INFO L168 Benchmark]: TraceAbstraction took 4474.42 ms. Allocated memory was 367.0 MB in the beginning and 880.8 MB in the end (delta: 513.8 MB). Free memory was 298.5 MB in the beginning and 558.2 MB in the end (delta: -259.7 MB). Peak memory consumption was 254.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:52:28,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 367.0 MB. Free memory was 347.5 MB in the beginning and 347.4 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 412.39 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 328.9 MB in the end (delta: -13.0 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.17 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 325.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.39 ms. Allocated memory is still 367.0 MB. Free memory was 325.7 MB in the beginning and 324.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 369.28 ms. Allocated memory is still 367.0 MB. Free memory was 324.7 MB in the beginning and 299.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4474.42 ms. Allocated memory was 367.0 MB in the beginning and 880.8 MB in the end (delta: 513.8 MB). Free memory was 298.5 MB in the beginning and 558.2 MB in the end (delta: -259.7 MB). Peak memory consumption was 254.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4393.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 140.0ms, AutomataDifference: 1699.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 444.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1038 SDtfs, 1767 SDslu, 3528 SDs, 0 SdLazy, 371 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 259.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1246.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9333occurred in iteration=0, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 829.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 600 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 187.9ms SatisfiabilityAnalysisTime, 911.0ms InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 548 ConstructedInterpolants, 0 QuantifiedInterpolants, 2234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...