/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 23:19:00,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 23:19:00,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 23:19:00,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 23:19:00,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 23:19:00,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 23:19:00,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 23:19:00,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 23:19:00,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 23:19:00,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 23:19:00,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 23:19:00,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 23:19:00,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 23:19:00,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 23:19:00,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 23:19:00,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 23:19:00,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 23:19:00,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 23:19:00,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 23:19:00,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 23:19:00,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 23:19:00,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 23:19:00,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 23:19:00,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 23:19:00,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-14 23:19:00,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 23:19:00,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 23:19:00,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 23:19:00,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 23:19:00,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 23:19:00,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 23:19:00,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 23:19:00,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 23:19:00,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 23:19:00,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 23:19:00,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 23:19:00,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 23:19:00,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 23:19:00,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 23:19:00,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 23:19:00,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 23:19:00,423 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 23:19:00,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 23:19:00,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 23:19:00,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 23:19:00,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 23:19:00,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 23:19:00,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 23:19:00,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 23:19:00,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 23:19:00,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 23:19:00,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 23:19:00,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 23:19:00,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 23:19:00,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 23:19:00,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 23:19:00,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 23:19:00,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 23:19:00,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 23:19:00,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 23:19:00,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 23:19:00,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 23:19:00,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 23:19:00,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 23:19:00,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 23:19:00,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 23:19:00,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 23:19:00,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 23:19:00,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 23:19:00,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 23:19:00,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 23:19:00,957 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 23:19:00,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-09-14 23:19:01,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb2f977c/d9a27789a8044706968ce42aa5943e2b/FLAGedf85593c [2020-09-14 23:19:01,726 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 23:19:01,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-09-14 23:19:01,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb2f977c/d9a27789a8044706968ce42aa5943e2b/FLAGedf85593c [2020-09-14 23:19:01,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb2f977c/d9a27789a8044706968ce42aa5943e2b [2020-09-14 23:19:01,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 23:19:01,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 23:19:01,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 23:19:01,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 23:19:01,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 23:19:01,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:19:01" (1/1) ... [2020-09-14 23:19:01,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb81fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:01, skipping insertion in model container [2020-09-14 23:19:01,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:19:01" (1/1) ... [2020-09-14 23:19:01,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 23:19:02,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 23:19:02,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:19:02,605 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 23:19:02,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:19:02,741 INFO L208 MainTranslator]: Completed translation [2020-09-14 23:19:02,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02 WrapperNode [2020-09-14 23:19:02,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 23:19:02,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 23:19:02,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 23:19:02,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 23:19:02,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 23:19:02,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 23:19:02,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 23:19:02,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 23:19:02,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... [2020-09-14 23:19:02,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 23:19:02,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 23:19:02,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 23:19:02,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 23:19:02,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 23:19:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 23:19:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 23:19:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 23:19:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 23:19:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 23:19:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 23:19:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 23:19:02,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 23:19:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 23:19:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 23:19:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 23:19:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 23:19:02,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 23:19:02,933 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 23:19:03,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 23:19:03,356 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 23:19:03,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:19:03 BoogieIcfgContainer [2020-09-14 23:19:03,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 23:19:03,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 23:19:03,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 23:19:03,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 23:19:03,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 11:19:01" (1/3) ... [2020-09-14 23:19:03,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab13568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:19:03, skipping insertion in model container [2020-09-14 23:19:03,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:19:02" (2/3) ... [2020-09-14 23:19:03,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab13568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:19:03, skipping insertion in model container [2020-09-14 23:19:03,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:19:03" (3/3) ... [2020-09-14 23:19:03,371 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-09-14 23:19:03,384 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 23:19:03,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 23:19:03,394 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 23:19:03,396 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 23:19:03,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,426 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,426 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,427 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,427 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,428 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,428 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,431 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,440 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,440 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,441 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,441 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,457 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,457 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,458 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:19:03,481 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 23:19:03,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 23:19:03,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 23:19:03,510 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 23:19:03,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 23:19:03,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 23:19:03,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 23:19:03,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 23:19:03,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 23:19:03,527 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-14 23:19:03,530 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:19:03,579 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:19:03,579 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:19:03,585 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 23:19:03,588 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:19:03,608 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:19:03,609 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:19:03,610 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 23:19:03,612 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 23:19:03,613 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 23:19:05,411 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-14 23:19:05,411 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-14 23:19:05,416 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 23:19:05,445 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-14 23:19:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-14 23:19:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 23:19:05,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:05,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:05,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:05,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:05,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-14 23:19:05,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:05,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907177841] [2020-09-14 23:19:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:05,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907177841] [2020-09-14 23:19:05,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:05,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 23:19:05,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793429851] [2020-09-14 23:19:05,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:19:05,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:19:05,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:05,783 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-14 23:19:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:05,855 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-09-14 23:19:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:19:05,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 23:19:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:05,879 INFO L225 Difference]: With dead ends: 294 [2020-09-14 23:19:05,879 INFO L226 Difference]: Without dead ends: 230 [2020-09-14 23:19:05,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:05,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-14 23:19:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-09-14 23:19:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-14 23:19:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-09-14 23:19:05,982 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-09-14 23:19:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:05,984 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-09-14 23:19:05,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:19:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-09-14 23:19:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 23:19:05,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:05,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:05,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 23:19:05,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:05,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:05,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1775895904, now seen corresponding path program 1 times [2020-09-14 23:19:05,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:05,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794071398] [2020-09-14 23:19:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794071398] [2020-09-14 23:19:06,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:19:06,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241172279] [2020-09-14 23:19:06,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:19:06,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:19:06,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:06,097 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-09-14 23:19:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,122 INFO L93 Difference]: Finished difference Result 344 states and 903 transitions. [2020-09-14 23:19:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:19:06,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-14 23:19:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,127 INFO L225 Difference]: With dead ends: 344 [2020-09-14 23:19:06,127 INFO L226 Difference]: Without dead ends: 254 [2020-09-14 23:19:06,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-14 23:19:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-09-14 23:19:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-14 23:19:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 570 transitions. [2020-09-14 23:19:06,150 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 570 transitions. Word has length 9 [2020-09-14 23:19:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,150 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 570 transitions. [2020-09-14 23:19:06,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:19:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 570 transitions. [2020-09-14 23:19:06,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 23:19:06,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:06,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:06,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 23:19:06,152 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:06,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:06,153 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-14 23:19:06,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:06,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43070782] [2020-09-14 23:19:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43070782] [2020-09-14 23:19:06,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 23:19:06,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765546526] [2020-09-14 23:19:06,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:19:06,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:19:06,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:06,222 INFO L87 Difference]: Start difference. First operand 218 states and 570 transitions. Second operand 3 states. [2020-09-14 23:19:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,230 INFO L93 Difference]: Finished difference Result 194 states and 488 transitions. [2020-09-14 23:19:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:19:06,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-14 23:19:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,232 INFO L225 Difference]: With dead ends: 194 [2020-09-14 23:19:06,233 INFO L226 Difference]: Without dead ends: 164 [2020-09-14 23:19:06,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-14 23:19:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-09-14 23:19:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-14 23:19:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 422 transitions. [2020-09-14 23:19:06,244 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 422 transitions. Word has length 9 [2020-09-14 23:19:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,245 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 422 transitions. [2020-09-14 23:19:06,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:19:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 422 transitions. [2020-09-14 23:19:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 23:19:06,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:06,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:06,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 23:19:06,247 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash -424003265, now seen corresponding path program 1 times [2020-09-14 23:19:06,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:06,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596377069] [2020-09-14 23:19:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596377069] [2020-09-14 23:19:06,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 23:19:06,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220232753] [2020-09-14 23:19:06,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:19:06,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:19:06,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:06,327 INFO L87 Difference]: Start difference. First operand 164 states and 422 transitions. Second operand 3 states. [2020-09-14 23:19:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,335 INFO L93 Difference]: Finished difference Result 158 states and 403 transitions. [2020-09-14 23:19:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:19:06,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-14 23:19:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,338 INFO L225 Difference]: With dead ends: 158 [2020-09-14 23:19:06,339 INFO L226 Difference]: Without dead ends: 158 [2020-09-14 23:19:06,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:19:06,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-14 23:19:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-14 23:19:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-14 23:19:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 403 transitions. [2020-09-14 23:19:06,363 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 403 transitions. Word has length 11 [2020-09-14 23:19:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,363 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 403 transitions. [2020-09-14 23:19:06,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:19:06,364 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 403 transitions. [2020-09-14 23:19:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 23:19:06,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:06,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:06,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 23:19:06,366 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:06,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:06,366 INFO L82 PathProgramCache]: Analyzing trace with hash -259200532, now seen corresponding path program 1 times [2020-09-14 23:19:06,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:06,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567683967] [2020-09-14 23:19:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567683967] [2020-09-14 23:19:06,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:19:06,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277196675] [2020-09-14 23:19:06,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:19:06,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:19:06,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:19:06,477 INFO L87 Difference]: Start difference. First operand 158 states and 403 transitions. Second operand 4 states. [2020-09-14 23:19:06,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,500 INFO L93 Difference]: Finished difference Result 188 states and 468 transitions. [2020-09-14 23:19:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:19:06,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 23:19:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,501 INFO L225 Difference]: With dead ends: 188 [2020-09-14 23:19:06,502 INFO L226 Difference]: Without dead ends: 110 [2020-09-14 23:19:06,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:19:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-14 23:19:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-14 23:19:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-14 23:19:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-09-14 23:19:06,507 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 12 [2020-09-14 23:19:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,508 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-09-14 23:19:06,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:19:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-09-14 23:19:06,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 23:19:06,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:06,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:06,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 23:19:06,510 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:06,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:06,510 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-09-14 23:19:06,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:06,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663405643] [2020-09-14 23:19:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663405643] [2020-09-14 23:19:06,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:19:06,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069740922] [2020-09-14 23:19:06,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:19:06,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:19:06,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:19:06,580 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-09-14 23:19:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,614 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-09-14 23:19:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:19:06,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 23:19:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,615 INFO L225 Difference]: With dead ends: 128 [2020-09-14 23:19:06,615 INFO L226 Difference]: Without dead ends: 97 [2020-09-14 23:19:06,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:19:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-14 23:19:06,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-14 23:19:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-14 23:19:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-09-14 23:19:06,620 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-09-14 23:19:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,621 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-09-14 23:19:06,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:19:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-09-14 23:19:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 23:19:06,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:06,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:06,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 23:19:06,623 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:06,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:06,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-09-14 23:19:06,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:06,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170960745] [2020-09-14 23:19:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170960745] [2020-09-14 23:19:06,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:19:06,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686429824] [2020-09-14 23:19:06,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:19:06,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:19:06,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:19:06,695 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-09-14 23:19:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,764 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-09-14 23:19:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 23:19:06,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-14 23:19:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,766 INFO L225 Difference]: With dead ends: 99 [2020-09-14 23:19:06,766 INFO L226 Difference]: Without dead ends: 79 [2020-09-14 23:19:06,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 23:19:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-14 23:19:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-14 23:19:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-14 23:19:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-09-14 23:19:06,770 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-09-14 23:19:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,770 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-09-14 23:19:06,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:19:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-09-14 23:19:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 23:19:06,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:06,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:06,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 23:19:06,772 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-09-14 23:19:06,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:06,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606922702] [2020-09-14 23:19:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606922702] [2020-09-14 23:19:06,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:19:06,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66003196] [2020-09-14 23:19:06,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 23:19:06,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 23:19:06,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 23:19:06,841 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-09-14 23:19:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,887 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-09-14 23:19:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 23:19:06,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 23:19:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,889 INFO L225 Difference]: With dead ends: 76 [2020-09-14 23:19:06,889 INFO L226 Difference]: Without dead ends: 69 [2020-09-14 23:19:06,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-14 23:19:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-14 23:19:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-14 23:19:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-14 23:19:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-09-14 23:19:06,892 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-09-14 23:19:06,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,893 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-09-14 23:19:06,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 23:19:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-09-14 23:19:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:19:06,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:19:06,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:19:06,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 23:19:06,894 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:19:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:19:06,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-14 23:19:06,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:19:06,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458663601] [2020-09-14 23:19:06,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:19:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:19:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 23:19:06,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458663601] [2020-09-14 23:19:06,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:19:06,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:19:06,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879334117] [2020-09-14 23:19:06,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:19:06,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:19:06,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:19:06,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:19:06,967 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-09-14 23:19:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:19:06,986 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-09-14 23:19:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:19:06,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:19:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:19:06,987 INFO L225 Difference]: With dead ends: 68 [2020-09-14 23:19:06,987 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 23:19:06,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:19:06,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 23:19:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 23:19:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 23:19:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 23:19:06,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-14 23:19:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:19:06,989 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 23:19:06,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:19:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 23:19:06,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 23:19:06,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 23:19:06,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 11:19:06 BasicIcfg [2020-09-14 23:19:06,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 23:19:06,998 INFO L168 Benchmark]: Toolchain (without parser) took 5063.37 ms. Allocated memory was 144.2 MB in the beginning and 247.5 MB in the end (delta: 103.3 MB). Free memory was 104.7 MB in the beginning and 112.5 MB in the end (delta: -7.8 MB). Peak memory consumption was 95.5 MB. Max. memory is 7.1 GB. [2020-09-14 23:19:06,999 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 144.2 MB. Free memory was 124.4 MB in the beginning and 124.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-14 23:19:07,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 800.00 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 104.1 MB in the beginning and 163.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-14 23:19:07,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.16 ms. Allocated memory is still 205.5 MB. Free memory was 163.0 MB in the beginning and 160.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-14 23:19:07,004 INFO L168 Benchmark]: Boogie Preprocessor took 40.27 ms. Allocated memory is still 205.5 MB. Free memory was 160.6 MB in the beginning and 159.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-14 23:19:07,005 INFO L168 Benchmark]: RCFGBuilder took 520.62 ms. Allocated memory is still 205.5 MB. Free memory was 159.4 MB in the beginning and 137.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-14 23:19:07,006 INFO L168 Benchmark]: TraceAbstraction took 3631.73 ms. Allocated memory was 205.5 MB in the beginning and 247.5 MB in the end (delta: 41.9 MB). Free memory was 136.9 MB in the beginning and 112.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2020-09-14 23:19:07,017 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 144.2 MB. Free memory was 124.4 MB in the beginning and 124.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 800.00 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 104.1 MB in the beginning and 163.0 MB in the end (delta: -58.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.16 ms. Allocated memory is still 205.5 MB. Free memory was 163.0 MB in the beginning and 160.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.27 ms. Allocated memory is still 205.5 MB. Free memory was 160.6 MB in the beginning and 159.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.62 ms. Allocated memory is still 205.5 MB. Free memory was 159.4 MB in the beginning and 137.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3631.73 ms. Allocated memory was 205.5 MB in the beginning and 247.5 MB in the end (delta: 41.9 MB). Free memory was 136.9 MB in the beginning and 112.5 MB in the end (delta: 24.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 677 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 165 SDtfs, 119 SDslu, 178 SDs, 0 SdLazy, 111 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 3169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...