/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:24:01,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:24:01,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:24:01,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:24:01,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 17:24:01,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 17:24:01,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 17:24:01,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 17:24:01,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 17:24:01,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 17:24:01,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 17:24:01,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 17:24:01,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 17:24:01,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 17:24:01,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 17:24:01,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 17:24:01,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 17:24:01,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:24:01,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:24:01,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:24:01,387 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 [2021-05-21 17:24:01,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:24:01,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:24:01,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:24:01,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:24:01,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:24:01,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:24:01,425 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:24:01,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:24:01,425 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:24:01,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:24:01,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:24:01,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:24:01,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:24:01,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:24:01,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:24:01,427 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:24:01,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:24:01,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:24:01,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:24:01,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:24:01,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:24:01,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:24:01,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:24:01,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:24:01,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:24:01,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:24:01,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:24:01,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:24:01,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:24:01,429 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:24:01,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:24:01,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:24:01,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:24:01,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:24:01,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:24:01,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:24:01,776 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:24:01,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-05-21 17:24:01,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fced0522/6a59f8d7eeaa472c9f3375d4057cd2b5/FLAG567146708 [2021-05-21 17:24:02,229 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:24:02,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-05-21 17:24:02,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fced0522/6a59f8d7eeaa472c9f3375d4057cd2b5/FLAG567146708 [2021-05-21 17:24:02,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fced0522/6a59f8d7eeaa472c9f3375d4057cd2b5 [2021-05-21 17:24:02,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:24:02,274 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:24:02,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:24:02,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:24:02,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:24:02,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e247e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02, skipping insertion in model container [2021-05-21 17:24:02,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:24:02,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:24:02,527 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/safe015_pso.opt.i[949,962] [2021-05-21 17:24:02,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:24:02,689 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:24:02,699 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/safe015_pso.opt.i[949,962] [2021-05-21 17:24:02,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:24:02,813 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:24:02,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02 WrapperNode [2021-05-21 17:24:02,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:24:02,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:24:02,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:24:02,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:24:02,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:24:02,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:24:02,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:24:02,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:24:02,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (1/1) ... [2021-05-21 17:24:02,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:24:02,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:24:02,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:24:02,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:24:02,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (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 [2021-05-21 17:24:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:24:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:24:02,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:24:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:24:02,974 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:24:02,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:24:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:24:02,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:24:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 17:24:02,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 17:24:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:24:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:24:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:24:02,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:24:02,978 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:24:03,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:24:03,249 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:24:03,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:24:03 BoogieIcfgContainer [2021-05-21 17:24:03,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:24:03,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:24:03,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:24:03,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:24:03,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:24:02" (1/3) ... [2021-05-21 17:24:03,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1484e35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:24:03, skipping insertion in model container [2021-05-21 17:24:03,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:24:02" (2/3) ... [2021-05-21 17:24:03,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1484e35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:24:03, skipping insertion in model container [2021-05-21 17:24:03,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:24:03" (3/3) ... [2021-05-21 17:24:03,256 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2021-05-21 17:24:03,261 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:24:03,261 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:24:03,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:24:03,262 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:24:03,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,293 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,293 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,294 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,294 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,302 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,302 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,302 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,302 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,306 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,308 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:24:03,311 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:24:03,328 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 17:24:03,344 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:24:03,344 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:24:03,344 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:24:03,345 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:24:03,345 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:24:03,345 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:24:03,345 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:24:03,345 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:24:03,359 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-05-21 17:24:03,931 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 17:24:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 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) [2021-05-21 17:24:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 17:24:04,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:04,006 INFO L521 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] [2021-05-21 17:24:04,006 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:04,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-05-21 17:24:04,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:04,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391380146] [2021-05-21 17:24:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:04,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:04,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391380146] [2021-05-21 17:24:04,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391380146] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:04,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:04,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:24:04,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55064946] [2021-05-21 17:24:04,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:24:04,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:04,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:24:04,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:24:04,516 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:24:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:04,961 INFO L93 Difference]: Finished difference Result 21088 states and 72805 transitions. [2021-05-21 17:24:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:24:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-05-21 17:24:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:05,122 INFO L225 Difference]: With dead ends: 21088 [2021-05-21 17:24:05,122 INFO L226 Difference]: Without dead ends: 7140 [2021-05-21 17:24:05,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 195.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:24:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-05-21 17:24:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6006. [2021-05-21 17:24:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6006 states, 6005 states have (on average 3.33488759367194) internal successors, (20026), 6005 states have internal predecessors, (20026), 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) [2021-05-21 17:24:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6006 states to 6006 states and 20026 transitions. [2021-05-21 17:24:05,501 INFO L78 Accepts]: Start accepts. Automaton has 6006 states and 20026 transitions. Word has length 48 [2021-05-21 17:24:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:05,502 INFO L482 AbstractCegarLoop]: Abstraction has 6006 states and 20026 transitions. [2021-05-21 17:24:05,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:24:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6006 states and 20026 transitions. [2021-05-21 17:24:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-21 17:24:05,515 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:05,515 INFO L521 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] [2021-05-21 17:24:05,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:24:05,516 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:05,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:05,517 INFO L82 PathProgramCache]: Analyzing trace with hash -396116582, now seen corresponding path program 1 times [2021-05-21 17:24:05,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:05,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119276923] [2021-05-21 17:24:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:05,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:05,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119276923] [2021-05-21 17:24:05,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119276923] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:05,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:05,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:05,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411212713] [2021-05-21 17:24:05,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:05,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:05,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:05,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:05,721 INFO L87 Difference]: Start difference. First operand 6006 states and 20026 transitions. 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) [2021-05-21 17:24:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:06,083 INFO L93 Difference]: Finished difference Result 8410 states and 27696 transitions. [2021-05-21 17:24:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 17:24:06,084 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 [2021-05-21 17:24:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:06,126 INFO L225 Difference]: With dead ends: 8410 [2021-05-21 17:24:06,126 INFO L226 Difference]: Without dead ends: 6474 [2021-05-21 17:24:06,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 248.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:24:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2021-05-21 17:24:06,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5338. [2021-05-21 17:24:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.3041034288926365) internal successors, (17634), 5337 states have internal predecessors, (17634), 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) [2021-05-21 17:24:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 17634 transitions. [2021-05-21 17:24:06,360 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 17634 transitions. Word has length 50 [2021-05-21 17:24:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:06,360 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 17634 transitions. [2021-05-21 17:24:06,361 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) [2021-05-21 17:24:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 17634 transitions. [2021-05-21 17:24:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 17:24:06,375 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:06,375 INFO L521 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] [2021-05-21 17:24:06,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:24:06,376 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:06,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:06,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1823781980, now seen corresponding path program 1 times [2021-05-21 17:24:06,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:06,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946521674] [2021-05-21 17:24:06,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:06,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:06,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946521674] [2021-05-21 17:24:06,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946521674] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:06,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:06,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:24:06,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200828447] [2021-05-21 17:24:06,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:24:06,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:06,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:24:06,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:24:06,526 INFO L87 Difference]: Start difference. First operand 5338 states and 17634 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-05-21 17:24:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:06,725 INFO L93 Difference]: Finished difference Result 6058 states and 19897 transitions. [2021-05-21 17:24:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:24:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2021-05-21 17:24:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:06,763 INFO L225 Difference]: With dead ends: 6058 [2021-05-21 17:24:06,764 INFO L226 Difference]: Without dead ends: 5134 [2021-05-21 17:24:06,764 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:24:06,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2021-05-21 17:24:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 5118. [2021-05-21 17:24:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 5117 states have (on average 3.2855188587062734) internal successors, (16812), 5117 states have internal predecessors, (16812), 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) [2021-05-21 17:24:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 16812 transitions. [2021-05-21 17:24:06,996 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 16812 transitions. Word has length 51 [2021-05-21 17:24:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:06,999 INFO L482 AbstractCegarLoop]: Abstraction has 5118 states and 16812 transitions. [2021-05-21 17:24:06,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-05-21 17:24:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 16812 transitions. [2021-05-21 17:24:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:24:07,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:07,013 INFO L521 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] [2021-05-21 17:24:07,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:24:07,014 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:07,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:07,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1802568255, now seen corresponding path program 1 times [2021-05-21 17:24:07,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:07,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461130651] [2021-05-21 17:24:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:07,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:07,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461130651] [2021-05-21 17:24:07,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461130651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:07,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:07,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:07,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025792358] [2021-05-21 17:24:07,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:07,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:07,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:07,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:07,170 INFO L87 Difference]: Start difference. First operand 5118 states and 16812 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) [2021-05-21 17:24:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:07,389 INFO L93 Difference]: Finished difference Result 6686 states and 21789 transitions. [2021-05-21 17:24:07,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 17:24:07,390 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 [2021-05-21 17:24:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:07,406 INFO L225 Difference]: With dead ends: 6686 [2021-05-21 17:24:07,407 INFO L226 Difference]: Without dead ends: 5586 [2021-05-21 17:24:07,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 154.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:24:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-05-21 17:24:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 4427. [2021-05-21 17:24:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.2790329868956167) internal successors, (14513), 4426 states have internal predecessors, (14513), 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) [2021-05-21 17:24:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14513 transitions. [2021-05-21 17:24:07,657 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14513 transitions. Word has length 52 [2021-05-21 17:24:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:07,657 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14513 transitions. [2021-05-21 17:24:07,657 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) [2021-05-21 17:24:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14513 transitions. [2021-05-21 17:24:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:24:07,667 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:07,667 INFO L521 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] [2021-05-21 17:24:07,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:24:07,668 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:07,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1730681128, now seen corresponding path program 1 times [2021-05-21 17:24:07,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:07,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987747497] [2021-05-21 17:24:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:07,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:07,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987747497] [2021-05-21 17:24:07,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987747497] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:07,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:07,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:07,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422651965] [2021-05-21 17:24:07,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:07,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:07,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:07,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:07,782 INFO L87 Difference]: Start difference. First operand 4427 states and 14513 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) [2021-05-21 17:24:08,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:08,005 INFO L93 Difference]: Finished difference Result 6233 states and 20189 transitions. [2021-05-21 17:24:08,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 17:24:08,006 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 [2021-05-21 17:24:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:08,023 INFO L225 Difference]: With dead ends: 6233 [2021-05-21 17:24:08,023 INFO L226 Difference]: Without dead ends: 5349 [2021-05-21 17:24:08,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 156.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:24:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-05-21 17:24:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4205. [2021-05-21 17:24:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2649857278782113) internal successors, (13726), 4204 states have internal predecessors, (13726), 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) [2021-05-21 17:24:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13726 transitions. [2021-05-21 17:24:08,198 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13726 transitions. Word has length 54 [2021-05-21 17:24:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:08,199 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13726 transitions. [2021-05-21 17:24:08,199 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) [2021-05-21 17:24:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13726 transitions. [2021-05-21 17:24:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:24:08,208 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:08,208 INFO L521 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] [2021-05-21 17:24:08,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:24:08,209 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:08,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:08,209 INFO L82 PathProgramCache]: Analyzing trace with hash 245526365, now seen corresponding path program 1 times [2021-05-21 17:24:08,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:08,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191385312] [2021-05-21 17:24:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:08,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:08,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191385312] [2021-05-21 17:24:08,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191385312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:08,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:08,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:24:08,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145551841] [2021-05-21 17:24:08,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:24:08,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:08,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:24:08,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:24:08,301 INFO L87 Difference]: Start difference. First operand 4205 states and 13726 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-05-21 17:24:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:08,417 INFO L93 Difference]: Finished difference Result 7461 states and 24155 transitions. [2021-05-21 17:24:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:24:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 [2021-05-21 17:24:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:08,433 INFO L225 Difference]: With dead ends: 7461 [2021-05-21 17:24:08,433 INFO L226 Difference]: Without dead ends: 5277 [2021-05-21 17:24:08,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-05-21 17:24:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2021-05-21 17:24:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 4205. [2021-05-21 17:24:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2516650808753567) internal successors, (13670), 4204 states have internal predecessors, (13670), 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) [2021-05-21 17:24:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13670 transitions. [2021-05-21 17:24:08,571 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13670 transitions. Word has length 54 [2021-05-21 17:24:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:08,571 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13670 transitions. [2021-05-21 17:24:08,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-05-21 17:24:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13670 transitions. [2021-05-21 17:24:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:24:08,581 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:08,581 INFO L521 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] [2021-05-21 17:24:08,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:24:08,581 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash 192553753, now seen corresponding path program 2 times [2021-05-21 17:24:08,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:08,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694403263] [2021-05-21 17:24:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:08,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:08,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694403263] [2021-05-21 17:24:08,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694403263] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:08,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:08,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:24:08,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722949069] [2021-05-21 17:24:08,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:24:08,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:08,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:24:08,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:24:08,738 INFO L87 Difference]: Start difference. First operand 4205 states and 13670 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-05-21 17:24:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:08,842 INFO L93 Difference]: Finished difference Result 5341 states and 17118 transitions. [2021-05-21 17:24:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 17:24:08,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 [2021-05-21 17:24:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:08,850 INFO L225 Difference]: With dead ends: 5341 [2021-05-21 17:24:08,851 INFO L226 Difference]: Without dead ends: 2597 [2021-05-21 17:24:08,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.5ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-05-21 17:24:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-05-21 17:24:08,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2405. [2021-05-21 17:24:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 3.074459234608985) internal successors, (7391), 2404 states have internal predecessors, (7391), 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) [2021-05-21 17:24:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 7391 transitions. [2021-05-21 17:24:08,917 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 7391 transitions. Word has length 54 [2021-05-21 17:24:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:08,917 INFO L482 AbstractCegarLoop]: Abstraction has 2405 states and 7391 transitions. [2021-05-21 17:24:08,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-05-21 17:24:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 7391 transitions. [2021-05-21 17:24:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 17:24:08,922 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:08,922 INFO L521 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] [2021-05-21 17:24:08,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 17:24:08,922 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:08,923 INFO L82 PathProgramCache]: Analyzing trace with hash -663113566, now seen corresponding path program 1 times [2021-05-21 17:24:08,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:08,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767206988] [2021-05-21 17:24:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:09,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:09,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767206988] [2021-05-21 17:24:09,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767206988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:09,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:09,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:24:09,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785253851] [2021-05-21 17:24:09,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:24:09,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:09,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:24:09,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:24:09,022 INFO L87 Difference]: Start difference. First operand 2405 states and 7391 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-05-21 17:24:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:09,126 INFO L93 Difference]: Finished difference Result 2882 states and 8749 transitions. [2021-05-21 17:24:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:24:09,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 [2021-05-21 17:24:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:09,132 INFO L225 Difference]: With dead ends: 2882 [2021-05-21 17:24:09,132 INFO L226 Difference]: Without dead ends: 2186 [2021-05-21 17:24:09,133 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:24:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2021-05-21 17:24:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2186. [2021-05-21 17:24:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 3.0187643020594965) internal successors, (6596), 2185 states have internal predecessors, (6596), 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) [2021-05-21 17:24:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 6596 transitions. [2021-05-21 17:24:09,176 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 6596 transitions. Word has length 55 [2021-05-21 17:24:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:09,177 INFO L482 AbstractCegarLoop]: Abstraction has 2186 states and 6596 transitions. [2021-05-21 17:24:09,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-05-21 17:24:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6596 transitions. [2021-05-21 17:24:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-21 17:24:09,180 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:09,181 INFO L521 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] [2021-05-21 17:24:09,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 17:24:09,181 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:09,181 INFO L82 PathProgramCache]: Analyzing trace with hash 328653495, now seen corresponding path program 1 times [2021-05-21 17:24:09,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:09,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105159480] [2021-05-21 17:24:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:09,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:09,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105159480] [2021-05-21 17:24:09,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105159480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:09,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:09,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:24:09,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16190606] [2021-05-21 17:24:09,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:24:09,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:09,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:24:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:24:09,249 INFO L87 Difference]: Start difference. First operand 2186 states and 6596 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-05-21 17:24:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:09,364 INFO L93 Difference]: Finished difference Result 2123 states and 6230 transitions. [2021-05-21 17:24:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:24:09,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-05-21 17:24:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:09,369 INFO L225 Difference]: With dead ends: 2123 [2021-05-21 17:24:09,369 INFO L226 Difference]: Without dead ends: 1571 [2021-05-21 17:24:09,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:24:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-05-21 17:24:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2021-05-21 17:24:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 2.875796178343949) internal successors, (4515), 1570 states have internal predecessors, (4515), 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) [2021-05-21 17:24:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 4515 transitions. [2021-05-21 17:24:09,401 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 4515 transitions. Word has length 56 [2021-05-21 17:24:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:09,402 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 4515 transitions. [2021-05-21 17:24:09,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-05-21 17:24:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 4515 transitions. [2021-05-21 17:24:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-21 17:24:09,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:24:09,405 INFO L521 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] [2021-05-21 17:24:09,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 17:24:09,406 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:24:09,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:24:09,406 INFO L82 PathProgramCache]: Analyzing trace with hash -372773896, now seen corresponding path program 1 times [2021-05-21 17:24:09,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:24:09,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962933541] [2021-05-21 17:24:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:24:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:24:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:24:09,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:24:09,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962933541] [2021-05-21 17:24:09,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962933541] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:24:09,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:24:09,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:24:09,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157425000] [2021-05-21 17:24:09,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:24:09,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:24:09,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:24:09,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:24:09,550 INFO L87 Difference]: Start difference. First operand 1571 states and 4515 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-05-21 17:24:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:24:09,630 INFO L93 Difference]: Finished difference Result 1139 states and 3192 transitions. [2021-05-21 17:24:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 17:24:09,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 [2021-05-21 17:24:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:24:09,631 INFO L225 Difference]: With dead ends: 1139 [2021-05-21 17:24:09,631 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:24:09,631 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:24:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:24:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:24:09,632 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) [2021-05-21 17:24:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:24:09,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-05-21 17:24:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:24:09,632 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:24:09,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-05-21 17:24:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:24:09,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:24:09,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 17:24:09,634 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:24:09,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:24:09 BasicIcfg [2021-05-21 17:24:09,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:24:09,637 INFO L168 Benchmark]: Toolchain (without parser) took 7362.68 ms. Allocated memory was 371.2 MB in the beginning and 2.0 GB in the end (delta: 1.6 GB). Free memory was 334.2 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 181.0 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:09,638 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 371.2 MB. Free memory is still 352.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:24:09,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.09 ms. Allocated memory is still 371.2 MB. Free memory was 334.1 MB in the beginning and 332.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:09,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.34 ms. Allocated memory is still 371.2 MB. Free memory was 332.2 MB in the beginning and 330.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:09,642 INFO L168 Benchmark]: Boogie Preprocessor took 26.94 ms. Allocated memory is still 371.2 MB. Free memory was 330.1 MB in the beginning and 329.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:24:09,643 INFO L168 Benchmark]: RCFGBuilder took 351.95 ms. Allocated memory is still 371.2 MB. Free memory was 329.0 MB in the beginning and 303.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:09,643 INFO L168 Benchmark]: TraceAbstraction took 6384.83 ms. Allocated memory was 371.2 MB in the beginning and 2.0 GB in the end (delta: 1.6 GB). Free memory was 303.9 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 150.6 MB. Max. memory is 16.0 GB. [2021-05-21 17:24:09,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 371.2 MB. Free memory is still 352.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 537.09 ms. Allocated memory is still 371.2 MB. Free memory was 334.1 MB in the beginning and 332.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.34 ms. Allocated memory is still 371.2 MB. Free memory was 332.2 MB in the beginning and 330.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.94 ms. Allocated memory is still 371.2 MB. Free memory was 330.1 MB in the beginning and 329.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 351.95 ms. Allocated memory is still 371.2 MB. Free memory was 329.0 MB in the beginning and 303.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6384.83 ms. Allocated memory was 371.2 MB in the beginning and 2.0 GB in the end (delta: 1.6 GB). Free memory was 303.9 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 150.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6291.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 152.6ms, AutomataDifference: 2332.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 586.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1120 SDtfs, 1642 SDslu, 3835 SDs, 0 SdLazy, 486 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 365.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1416.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1533.1ms AutomataMinimizationTime, 10 MinimizatonAttempts, 5853 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.2ms SsaConstructionTime, 210.5ms SatisfiabilityAnalysisTime, 1243.5ms InterpolantComputationTime, 532 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 2698 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...