/usr/bin/java -Xmx8000000000 -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 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:49:09,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:49:09,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:49:09,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:49:09,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 16:49:09,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 16:49:09,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 16:49:09,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 16:49:09,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 16:49:09,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 16:49:09,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 16:49:09,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 16:49:09,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 16:49:09,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 16:49:09,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 16:49:09,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 16:49:09,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 16:49:09,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:49:09,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:49:09,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:49:09,535 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 [2021-07-09 16:49:09,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:49:09,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:49:09,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:49:09,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:49:09,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:49:09,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:49:09,566 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:49:09,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:49:09,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:49:09,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:49:09,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:49:09,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:49:09,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:49:09,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:49:09,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:49:09,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:49:09,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:49:09,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:49:09,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:49:09,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:49:09,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:49:09,569 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:49:09,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:49:09,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:49:09,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:49:09,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:49:09,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:49:09,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:49:09,831 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:49:09,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-07-09 16:49:09,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c7b9e52/5a8607ce456d4f2889fc328cb7583272/FLAGcba8e9a47 [2021-07-09 16:49:10,297 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:49:10,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-07-09 16:49:10,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c7b9e52/5a8607ce456d4f2889fc328cb7583272/FLAGcba8e9a47 [2021-07-09 16:49:10,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c7b9e52/5a8607ce456d4f2889fc328cb7583272 [2021-07-09 16:49:10,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:49:10,643 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:49:10,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:49:10,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:49:10,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:49:10,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:10,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4060c8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10, skipping insertion in model container [2021-07-09 16:49:10,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:10,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:49:10,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:49:10,809 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] [2021-07-09 16:49:10,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:49:10,944 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:49:10,951 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] [2021-07-09 16:49:10,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:49:10,989 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:49:10,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10 WrapperNode [2021-07-09 16:49:10,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:49:10,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:49:10,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:49:10,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:49:10,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:49:11,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:49:11,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:49:11,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:49:11,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (1/1) ... [2021-07-09 16:49:11,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:49:11,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:49:11,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:49:11,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:49:11,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (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 [2021-07-09 16:49:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:49:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-09 16:49:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:49:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:49:11,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-09 16:49:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-09 16:49:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-09 16:49:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-09 16:49:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-09 16:49:11,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-09 16:49:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:49:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-09 16:49:11,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:49:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:49:11,129 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:49:11,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:49:11,495 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-09 16:49:11,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:49:11 BoogieIcfgContainer [2021-07-09 16:49:11,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:49:11,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:49:11,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:49:11,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:49:11,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:49:10" (1/3) ... [2021-07-09 16:49:11,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15778362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:49:11, skipping insertion in model container [2021-07-09 16:49:11,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:49:10" (2/3) ... [2021-07-09 16:49:11,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15778362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:49:11, skipping insertion in model container [2021-07-09 16:49:11,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:49:11" (3/3) ... [2021-07-09 16:49:11,503 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2021-07-09 16:49:11,509 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:49:11,509 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:49:11,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 16:49:11,509 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:49:11,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,537 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,537 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,539 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,539 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,540 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,541 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,541 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,542 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,542 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,546 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,546 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,546 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,547 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,547 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,547 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,547 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,548 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,548 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,548 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,548 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,549 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,549 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,555 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,556 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,557 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:49:11,561 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-09 16:49:11,578 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-09 16:49:11,597 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:49:11,597 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:49:11,597 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:49:11,598 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:49:11,598 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:49:11,598 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:49:11,598 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:49:11,598 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 16:49:11,609 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-07-09 16:49:11,765 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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) [2021-07-09 16:49:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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) [2021-07-09 16:49:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-09 16:49:11,815 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:11,816 INFO L508 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] [2021-07-09 16:49:11,816 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1408065288, now seen corresponding path program 1 times [2021-07-09 16:49:11,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:11,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343101669] [2021-07-09 16:49:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:12,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:12,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343101669] [2021-07-09 16:49:12,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343101669] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:12,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:12,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:12,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049257065] [2021-07-09 16:49:12,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:12,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:12,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:12,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:12,286 INFO L87 Difference]: Start difference. First operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 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) [2021-07-09 16:49:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:12,608 INFO L93 Difference]: Finished difference Result 6344 states and 21548 transitions. [2021-07-09 16:49:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:12,610 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 [2021-07-09 16:49:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:12,658 INFO L225 Difference]: With dead ends: 6344 [2021-07-09 16:49:12,659 INFO L226 Difference]: Without dead ends: 4629 [2021-07-09 16:49:12,660 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-09 16:49:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-07-09 16:49:12,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4629. [2021-07-09 16:49:12,823 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) [2021-07-09 16:49:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 15668 transitions. [2021-07-09 16:49:12,844 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 15668 transitions. Word has length 50 [2021-07-09 16:49:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:12,845 INFO L482 AbstractCegarLoop]: Abstraction has 4629 states and 15668 transitions. [2021-07-09 16:49:12,845 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) [2021-07-09 16:49:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 15668 transitions. [2021-07-09 16:49:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-09 16:49:12,853 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:12,853 INFO L508 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] [2021-07-09 16:49:12,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:49:12,853 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:12,854 INFO L82 PathProgramCache]: Analyzing trace with hash 452026023, now seen corresponding path program 1 times [2021-07-09 16:49:12,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:12,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362650044] [2021-07-09 16:49:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:12,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:12,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362650044] [2021-07-09 16:49:12,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362650044] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:12,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:12,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:12,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790762862] [2021-07-09 16:49:12,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:12,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:12,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:12,958 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) [2021-07-09 16:49:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:13,225 INFO L93 Difference]: Finished difference Result 5945 states and 20058 transitions. [2021-07-09 16:49:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 16:49:13,226 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 [2021-07-09 16:49:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:13,249 INFO L225 Difference]: With dead ends: 5945 [2021-07-09 16:49:13,249 INFO L226 Difference]: Without dead ends: 4825 [2021-07-09 16:49:13,250 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 176.0ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-07-09 16:49:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-07-09 16:49:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4825. [2021-07-09 16:49:13,413 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) [2021-07-09 16:49:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 16333 transitions. [2021-07-09 16:49:13,435 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 16333 transitions. Word has length 52 [2021-07-09 16:49:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:13,435 INFO L482 AbstractCegarLoop]: Abstraction has 4825 states and 16333 transitions. [2021-07-09 16:49:13,435 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) [2021-07-09 16:49:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 16333 transitions. [2021-07-09 16:49:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 16:49:13,445 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:13,445 INFO L508 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] [2021-07-09 16:49:13,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:49:13,445 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1841101257, now seen corresponding path program 1 times [2021-07-09 16:49:13,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:13,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006093367] [2021-07-09 16:49:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:13,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:13,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006093367] [2021-07-09 16:49:13,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006093367] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:13,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:13,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:13,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196271240] [2021-07-09 16:49:13,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:13,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:13,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:13,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:13,518 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) [2021-07-09 16:49:13,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:13,668 INFO L93 Difference]: Finished difference Result 5273 states and 17697 transitions. [2021-07-09 16:49:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:13,669 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 [2021-07-09 16:49:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:13,690 INFO L225 Difference]: With dead ends: 5273 [2021-07-09 16:49:13,690 INFO L226 Difference]: Without dead ends: 4489 [2021-07-09 16:49:13,691 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:13,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2021-07-09 16:49:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4489. [2021-07-09 16:49:13,780 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) [2021-07-09 16:49:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 15121 transitions. [2021-07-09 16:49:13,793 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 15121 transitions. Word has length 53 [2021-07-09 16:49:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:13,794 INFO L482 AbstractCegarLoop]: Abstraction has 4489 states and 15121 transitions. [2021-07-09 16:49:13,794 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) [2021-07-09 16:49:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 15121 transitions. [2021-07-09 16:49:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-09 16:49:13,802 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:13,802 INFO L508 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] [2021-07-09 16:49:13,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:49:13,803 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:13,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1133187088, now seen corresponding path program 1 times [2021-07-09 16:49:13,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:13,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047492875] [2021-07-09 16:49:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:13,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:13,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047492875] [2021-07-09 16:49:13,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047492875] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:13,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:13,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:13,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660599021] [2021-07-09 16:49:13,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:13,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:13,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:13,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:13,878 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) [2021-07-09 16:49:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:14,119 INFO L93 Difference]: Finished difference Result 7427 states and 24905 transitions. [2021-07-09 16:49:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 16:49:14,119 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 [2021-07-09 16:49:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:14,143 INFO L225 Difference]: With dead ends: 7427 [2021-07-09 16:49:14,144 INFO L226 Difference]: Without dead ends: 5047 [2021-07-09 16:49:14,144 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 172.1ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-07-09 16:49:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-07-09 16:49:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 4447. [2021-07-09 16:49:14,233 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) [2021-07-09 16:49:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 14860 transitions. [2021-07-09 16:49:14,245 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 14860 transitions. Word has length 54 [2021-07-09 16:49:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:14,246 INFO L482 AbstractCegarLoop]: Abstraction has 4447 states and 14860 transitions. [2021-07-09 16:49:14,246 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) [2021-07-09 16:49:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 14860 transitions. [2021-07-09 16:49:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 16:49:14,255 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:14,256 INFO L508 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] [2021-07-09 16:49:14,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:49:14,256 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:14,259 INFO L82 PathProgramCache]: Analyzing trace with hash 327983370, now seen corresponding path program 1 times [2021-07-09 16:49:14,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:14,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172823446] [2021-07-09 16:49:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:14,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:14,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172823446] [2021-07-09 16:49:14,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172823446] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:14,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:14,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:49:14,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982896953] [2021-07-09 16:49:14,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:49:14,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:14,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:49:14,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:49:14,412 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) [2021-07-09 16:49:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:14,520 INFO L93 Difference]: Finished difference Result 5919 states and 19684 transitions. [2021-07-09 16:49:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:49:14,521 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 [2021-07-09 16:49:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:14,529 INFO L225 Difference]: With dead ends: 5919 [2021-07-09 16:49:14,530 INFO L226 Difference]: Without dead ends: 2879 [2021-07-09 16:49:14,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-07-09 16:49:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2879. [2021-07-09 16:49:14,577 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) [2021-07-09 16:49:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 9459 transitions. [2021-07-09 16:49:14,584 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 9459 transitions. Word has length 55 [2021-07-09 16:49:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:14,584 INFO L482 AbstractCegarLoop]: Abstraction has 2879 states and 9459 transitions. [2021-07-09 16:49:14,584 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) [2021-07-09 16:49:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 9459 transitions. [2021-07-09 16:49:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-09 16:49:14,588 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:14,589 INFO L508 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] [2021-07-09 16:49:14,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:49:14,589 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:14,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:14,589 INFO L82 PathProgramCache]: Analyzing trace with hash 108256550, now seen corresponding path program 1 times [2021-07-09 16:49:14,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:14,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030133428] [2021-07-09 16:49:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:14,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:14,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030133428] [2021-07-09 16:49:14,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030133428] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:14,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:14,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:14,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839765725] [2021-07-09 16:49:14,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:14,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:14,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:14,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:14,644 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) [2021-07-09 16:49:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:14,740 INFO L93 Difference]: Finished difference Result 4039 states and 13185 transitions. [2021-07-09 16:49:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:49:14,740 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 [2021-07-09 16:49:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:14,745 INFO L225 Difference]: With dead ends: 4039 [2021-07-09 16:49:14,745 INFO L226 Difference]: Without dead ends: 1799 [2021-07-09 16:49:14,746 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-09 16:49:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-07-09 16:49:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1799. [2021-07-09 16:49:14,775 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) [2021-07-09 16:49:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 5631 transitions. [2021-07-09 16:49:14,806 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 5631 transitions. Word has length 55 [2021-07-09 16:49:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:14,806 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 5631 transitions. [2021-07-09 16:49:14,806 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) [2021-07-09 16:49:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 5631 transitions. [2021-07-09 16:49:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-09 16:49:14,810 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:14,810 INFO L508 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] [2021-07-09 16:49:14,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:49:14,810 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:14,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:14,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2083636199, now seen corresponding path program 1 times [2021-07-09 16:49:14,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:14,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500949309] [2021-07-09 16:49:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:14,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:14,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500949309] [2021-07-09 16:49:14,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500949309] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:14,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:14,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 16:49:14,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070882077] [2021-07-09 16:49:14,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 16:49:14,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:14,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 16:49:14,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-09 16:49:14,872 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) [2021-07-09 16:49:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:14,956 INFO L93 Difference]: Finished difference Result 2269 states and 7052 transitions. [2021-07-09 16:49:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-09 16:49:14,956 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 [2021-07-09 16:49:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:14,961 INFO L225 Difference]: With dead ends: 2269 [2021-07-09 16:49:14,961 INFO L226 Difference]: Without dead ends: 1677 [2021-07-09 16:49:14,961 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 66.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2021-07-09 16:49:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1677. [2021-07-09 16:49:14,992 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) [2021-07-09 16:49:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 5218 transitions. [2021-07-09 16:49:14,997 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 5218 transitions. Word has length 58 [2021-07-09 16:49:14,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:14,998 INFO L482 AbstractCegarLoop]: Abstraction has 1677 states and 5218 transitions. [2021-07-09 16:49:14,998 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) [2021-07-09 16:49:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 5218 transitions. [2021-07-09 16:49:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-09 16:49:15,001 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:15,001 INFO L508 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] [2021-07-09 16:49:15,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 16:49:15,002 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash 439804712, now seen corresponding path program 1 times [2021-07-09 16:49:15,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:15,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121322931] [2021-07-09 16:49:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:15,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:15,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121322931] [2021-07-09 16:49:15,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121322931] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:15,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:15,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:15,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468332008] [2021-07-09 16:49:15,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:15,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:15,061 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) [2021-07-09 16:49:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:15,167 INFO L93 Difference]: Finished difference Result 1866 states and 5695 transitions. [2021-07-09 16:49:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-09 16:49:15,167 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 [2021-07-09 16:49:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:15,171 INFO L225 Difference]: With dead ends: 1866 [2021-07-09 16:49:15,171 INFO L226 Difference]: Without dead ends: 1362 [2021-07-09 16:49:15,172 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-09 16:49:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-07-09 16:49:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2021-07-09 16:49:15,196 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) [2021-07-09 16:49:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4108 transitions. [2021-07-09 16:49:15,199 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4108 transitions. Word has length 59 [2021-07-09 16:49:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:15,199 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 4108 transitions. [2021-07-09 16:49:15,199 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) [2021-07-09 16:49:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4108 transitions. [2021-07-09 16:49:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-07-09 16:49:15,202 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:15,202 INFO L508 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] [2021-07-09 16:49:15,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 16:49:15,203 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:15,203 INFO L82 PathProgramCache]: Analyzing trace with hash 592427241, now seen corresponding path program 1 times [2021-07-09 16:49:15,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:15,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998731745] [2021-07-09 16:49:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:15,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:15,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998731745] [2021-07-09 16:49:15,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998731745] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:15,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:15,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-09 16:49:15,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182160423] [2021-07-09 16:49:15,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 16:49:15,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:15,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 16:49:15,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-09 16:49:15,267 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) [2021-07-09 16:49:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:15,383 INFO L93 Difference]: Finished difference Result 1200 states and 3505 transitions. [2021-07-09 16:49:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 16:49:15,383 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 [2021-07-09 16:49:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:15,386 INFO L225 Difference]: With dead ends: 1200 [2021-07-09 16:49:15,386 INFO L226 Difference]: Without dead ends: 876 [2021-07-09 16:49:15,386 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-09 16:49:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-07-09 16:49:15,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2021-07-09 16:49:15,400 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) [2021-07-09 16:49:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2488 transitions. [2021-07-09 16:49:15,402 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2488 transitions. Word has length 60 [2021-07-09 16:49:15,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:15,402 INFO L482 AbstractCegarLoop]: Abstraction has 876 states and 2488 transitions. [2021-07-09 16:49:15,402 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) [2021-07-09 16:49:15,402 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2488 transitions. [2021-07-09 16:49:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-09 16:49:15,404 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:49:15,404 INFO L508 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] [2021-07-09 16:49:15,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 16:49:15,404 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:49:15,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:49:15,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1769529258, now seen corresponding path program 1 times [2021-07-09 16:49:15,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:49:15,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144237652] [2021-07-09 16:49:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:49:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:49:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:49:15,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:49:15,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144237652] [2021-07-09 16:49:15,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144237652] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:49:15,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:49:15,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-09 16:49:15,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164702895] [2021-07-09 16:49:15,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 16:49:15,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:49:15,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 16:49:15,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 16:49:15,477 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) [2021-07-09 16:49:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:49:15,547 INFO L93 Difference]: Finished difference Result 822 states and 2326 transitions. [2021-07-09 16:49:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 16:49:15,547 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 [2021-07-09 16:49:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:49:15,547 INFO L225 Difference]: With dead ends: 822 [2021-07-09 16:49:15,547 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 16:49:15,547 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-09 16:49:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 16:49:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 16:49:15,548 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) [2021-07-09 16:49:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 16:49:15,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-07-09 16:49:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:49:15,548 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 16:49:15,548 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) [2021-07-09 16:49:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 16:49:15,548 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 16:49:15,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 16:49:15,550 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 16:49:15,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 04:49:15 BasicIcfg [2021-07-09 16:49:15,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 16:49:15,553 INFO L168 Benchmark]: Toolchain (without parser) took 4909.42 ms. Allocated memory was 182.5 MB in the beginning and 782.2 MB in the end (delta: 599.8 MB). Free memory was 145.1 MB in the beginning and 443.9 MB in the end (delta: -298.8 MB). Peak memory consumption was 301.4 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:15,553 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 182.5 MB. Free memory is still 162.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 16:49:15,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.23 ms. Allocated memory is still 182.5 MB. Free memory was 144.9 MB in the beginning and 156.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:15,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.81 ms. Allocated memory is still 182.5 MB. Free memory was 156.2 MB in the beginning and 154.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:15,553 INFO L168 Benchmark]: Boogie Preprocessor took 13.80 ms. Allocated memory is still 182.5 MB. Free memory was 154.3 MB in the beginning and 153.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:15,554 INFO L168 Benchmark]: RCFGBuilder took 467.04 ms. Allocated memory is still 182.5 MB. Free memory was 153.0 MB in the beginning and 129.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:15,554 INFO L168 Benchmark]: TraceAbstraction took 4053.12 ms. Allocated memory was 182.5 MB in the beginning and 782.2 MB in the end (delta: 599.8 MB). Free memory was 128.9 MB in the beginning and 443.9 MB in the end (delta: -315.0 MB). Peak memory consumption was 285.9 MB. Max. memory is 8.0 GB. [2021-07-09 16:49:15,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 182.5 MB. Free memory is still 162.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.23 ms. Allocated memory is still 182.5 MB. Free memory was 144.9 MB in the beginning and 156.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.81 ms. Allocated memory is still 182.5 MB. Free memory was 156.2 MB in the beginning and 154.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.80 ms. Allocated memory is still 182.5 MB. Free memory was 154.3 MB in the beginning and 153.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 467.04 ms. Allocated memory is still 182.5 MB. Free memory was 153.0 MB in the beginning and 129.2 MB in the end (delta: 23.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4053.12 ms. Allocated memory was 182.5 MB in the beginning and 782.2 MB in the end (delta: 599.8 MB). Free memory was 128.9 MB in the beginning and 443.9 MB in the end (delta: -315.0 MB). Peak memory consumption was 285.9 MB. Max. memory is 8.0 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: 3953.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 99.5ms, AutomataDifference: 1772.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 167.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1029 SDtfs, 1756 SDslu, 3342 SDs, 0 SdLazy, 364 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 265.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1078.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5560occurred 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: 756.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 600 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.8ms SsaConstructionTime, 152.1ms SatisfiabilityAnalysisTime, 802.5ms 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...