/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 23:27:38,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 23:27:38,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 23:27:39,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 23:27:39,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 23:27:39,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 23:27:39,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 23:27:39,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 23:27:39,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 23:27:39,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 23:27:39,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 23:27:39,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 23:27:39,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 23:27:39,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 23:27:39,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 23:27:39,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 23:27:39,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 23:27:39,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 23:27:39,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 23:27:39,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 23:27:39,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 23:27:39,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 23:27:39,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 23:27:39,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 23:27:39,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 23:27:39,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 23:27:39,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 23:27:39,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 23:27:39,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 23:27:39,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 23:27:39,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 23:27:39,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 23:27:39,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 23:27:39,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 23:27:39,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 23:27:39,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 23:27:39,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 23:27:39,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 23:27:39,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 23:27:39,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 23:27:39,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 23:27:39,097 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 23:27:39,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 23:27:39,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 23:27:39,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 23:27:39,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 23:27:39,126 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 23:27:39,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 23:27:39,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 23:27:39,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 23:27:39,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 23:27:39,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 23:27:39,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 23:27:39,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 23:27:39,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 23:27:39,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 23:27:39,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 23:27:39,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 23:27:39,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 23:27:39,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 23:27:39,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 23:27:39,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 23:27:39,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 23:27:39,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 23:27:39,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 23:27:39,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 23:27:39,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 23:27:39,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 23:27:39,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 23:27:39,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 23:27:39,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 23:27:39,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 23:27:39,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 23:27:39,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 23:27:39,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 23:27:39,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 23:27:39,612 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 23:27:39,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-09-14 23:27:39,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/094596bba/55dcee09555a4dffb2a05787921df6ee/FLAG24b9f1d80 [2020-09-14 23:27:40,326 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 23:27:40,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-09-14 23:27:40,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/094596bba/55dcee09555a4dffb2a05787921df6ee/FLAG24b9f1d80 [2020-09-14 23:27:40,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/094596bba/55dcee09555a4dffb2a05787921df6ee [2020-09-14 23:27:40,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 23:27:40,584 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 23:27:40,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 23:27:40,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 23:27:40,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 23:27:40,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:27:40" (1/1) ... [2020-09-14 23:27:40,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253f621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:40, skipping insertion in model container [2020-09-14 23:27:40,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 11:27:40" (1/1) ... [2020-09-14 23:27:40,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 23:27:40,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 23:27:41,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:27:41,251 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 23:27:41,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 23:27:41,379 INFO L208 MainTranslator]: Completed translation [2020-09-14 23:27:41,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41 WrapperNode [2020-09-14 23:27:41,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 23:27:41,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 23:27:41,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 23:27:41,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 23:27:41,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 23:27:41,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 23:27:41,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 23:27:41,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 23:27:41,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (1/1) ... [2020-09-14 23:27:41,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 23:27:41,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 23:27:41,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 23:27:41,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 23:27:41,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (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 23:27:41,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 23:27:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 23:27:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 23:27:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 23:27:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 23:27:41,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 23:27:41,560 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 23:27:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 23:27:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 23:27:41,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 23:27:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 23:27:41,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 23:27:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 23:27:41,564 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 23:27:41,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 23:27:41,956 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 23:27:41,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:27:41 BoogieIcfgContainer [2020-09-14 23:27:41,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 23:27:41,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 23:27:41,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 23:27:41,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 23:27:41,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 11:27:40" (1/3) ... [2020-09-14 23:27:41,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2175c552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:27:41, skipping insertion in model container [2020-09-14 23:27:41,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 11:27:41" (2/3) ... [2020-09-14 23:27:41,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2175c552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 11:27:41, skipping insertion in model container [2020-09-14 23:27:41,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 11:27:41" (3/3) ... [2020-09-14 23:27:41,970 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-09-14 23:27:41,982 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 23:27:41,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 23:27:41,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 23:27:41,994 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 23:27:42,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,022 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,022 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,023 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,025 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,025 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,026 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,026 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,026 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,027 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,027 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,027 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,032 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,033 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,033 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,044 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,045 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,049 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,049 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,049 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 23:27:42,073 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 23:27:42,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 23:27:42,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 23:27:42,098 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 23:27:42,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 23:27:42,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 23:27:42,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 23:27:42,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 23:27:42,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 23:27:42,118 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-14 23:27:42,120 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:27:42,173 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:27:42,173 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:27:42,180 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 23:27:42,183 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-14 23:27:42,205 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-14 23:27:42,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 23:27:42,206 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 23:27:42,208 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 23:27:42,209 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 23:27:43,868 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-14 23:27:44,044 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-14 23:27:44,044 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-14 23:27:44,049 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 23:27:44,077 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-14 23:27:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-14 23:27:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 23:27:44,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:44,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:27:44,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:44,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-14 23:27:44,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:44,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22611957] [2020-09-14 23:27:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:44,371 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 23:27:44,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22611957] [2020-09-14 23:27:44,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:44,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 23:27:44,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901564624] [2020-09-14 23:27:44,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:27:44,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:27:44,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:27:44,400 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-14 23:27:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:44,459 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-14 23:27:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:27:44,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 23:27:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:44,481 INFO L225 Difference]: With dead ends: 282 [2020-09-14 23:27:44,481 INFO L226 Difference]: Without dead ends: 218 [2020-09-14 23:27:44,483 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 23:27:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-14 23:27:44,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-14 23:27:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-14 23:27:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-14 23:27:44,559 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-14 23:27:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:44,561 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-14 23:27:44,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:27:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-14 23:27:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 23:27:44,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:44,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:27:44,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 23:27:44,564 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:44,564 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-14 23:27:44,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:44,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397589527] [2020-09-14 23:27:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:44,695 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 23:27:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397589527] [2020-09-14 23:27:44,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:44,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:27:44,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688572327] [2020-09-14 23:27:44,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:27:44,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:44,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:27:44,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:27:44,699 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-14 23:27:44,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:44,720 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-14 23:27:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:27:44,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-14 23:27:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:44,725 INFO L225 Difference]: With dead ends: 202 [2020-09-14 23:27:44,725 INFO L226 Difference]: Without dead ends: 202 [2020-09-14 23:27:44,726 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 23:27:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-14 23:27:44,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-14 23:27:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-14 23:27:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-14 23:27:44,744 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-14 23:27:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:44,744 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-14 23:27:44,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:27:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-14 23:27:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 23:27:44,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:44,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:27:44,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 23:27:44,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:44,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-09-14 23:27:44,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:44,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323807835] [2020-09-14 23:27:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:44,818 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 23:27:44,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323807835] [2020-09-14 23:27:44,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:44,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 23:27:44,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265883353] [2020-09-14 23:27:44,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 23:27:44,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:44,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 23:27:44,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 23:27:44,820 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-14 23:27:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:44,829 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-09-14 23:27:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 23:27:44,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-14 23:27:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:44,832 INFO L225 Difference]: With dead ends: 194 [2020-09-14 23:27:44,832 INFO L226 Difference]: Without dead ends: 194 [2020-09-14 23:27:44,832 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 23:27:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-14 23:27:44,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-14 23:27:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-14 23:27:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-09-14 23:27:44,848 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-09-14 23:27:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:44,849 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-09-14 23:27:44,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 23:27:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-09-14 23:27:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 23:27:44,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:44,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:27:44,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 23:27:44,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:44,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-14 23:27:44,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:44,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600021477] [2020-09-14 23:27:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:44,963 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 23:27:44,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600021477] [2020-09-14 23:27:44,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:44,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:27:44,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370381626] [2020-09-14 23:27:44,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:27:44,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:44,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:27:44,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:27:44,966 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-09-14 23:27:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:45,017 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-09-14 23:27:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:27:45,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-14 23:27:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:45,020 INFO L225 Difference]: With dead ends: 225 [2020-09-14 23:27:45,020 INFO L226 Difference]: Without dead ends: 161 [2020-09-14 23:27:45,020 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 23:27:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-09-14 23:27:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-09-14 23:27:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-14 23:27:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-09-14 23:27:45,030 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-09-14 23:27:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:45,031 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-09-14 23:27:45,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:27:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-09-14 23:27:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 23:27:45,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:45,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:27:45,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 23:27:45,033 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:45,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-09-14 23:27:45,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:45,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113803466] [2020-09-14 23:27:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:45,118 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 23:27:45,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113803466] [2020-09-14 23:27:45,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:45,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:27:45,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128824976] [2020-09-14 23:27:45,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 23:27:45,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 23:27:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:27:45,124 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-09-14 23:27:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:45,179 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-09-14 23:27:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 23:27:45,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-14 23:27:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:45,181 INFO L225 Difference]: With dead ends: 160 [2020-09-14 23:27:45,181 INFO L226 Difference]: Without dead ends: 123 [2020-09-14 23:27:45,182 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 23:27:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-14 23:27:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-14 23:27:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-14 23:27:45,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-14 23:27:45,188 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-09-14 23:27:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:45,188 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-14 23:27:45,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 23:27:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-14 23:27:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 23:27:45,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:45,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 23:27:45,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 23:27:45,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:45,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-09-14 23:27:45,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:45,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453385720] [2020-09-14 23:27:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:45,262 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 23:27:45,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453385720] [2020-09-14 23:27:45,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:45,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 23:27:45,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489048840] [2020-09-14 23:27:45,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 23:27:45,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:45,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 23:27:45,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 23:27:45,264 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-09-14 23:27:45,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:45,321 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-14 23:27:45,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 23:27:45,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-14 23:27:45,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:45,322 INFO L225 Difference]: With dead ends: 118 [2020-09-14 23:27:45,322 INFO L226 Difference]: Without dead ends: 108 [2020-09-14 23:27:45,323 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 23:27:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-14 23:27:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-14 23:27:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-14 23:27:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-14 23:27:45,328 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-14 23:27:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:45,328 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-14 23:27:45,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 23:27:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-14 23:27:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:27:45,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:45,330 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 23:27:45,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 23:27:45,331 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:45,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-14 23:27:45,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:45,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901273253] [2020-09-14 23:27:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:45,397 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 23:27:45,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901273253] [2020-09-14 23:27:45,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:45,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:27:45,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241084703] [2020-09-14 23:27:45,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:27:45,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:45,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:27:45,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:27:45,399 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-09-14 23:27:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:45,422 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-14 23:27:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:27:45,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:27:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:45,423 INFO L225 Difference]: With dead ends: 133 [2020-09-14 23:27:45,424 INFO L226 Difference]: Without dead ends: 54 [2020-09-14 23:27:45,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:27:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-14 23:27:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-14 23:27:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-14 23:27:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-14 23:27:45,427 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-14 23:27:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:45,427 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-14 23:27:45,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:27:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-14 23:27:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:27:45,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:45,428 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 23:27:45,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 23:27:45,429 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:45,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-09-14 23:27:45,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:45,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694456210] [2020-09-14 23:27:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:45,488 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 23:27:45,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694456210] [2020-09-14 23:27:45,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:45,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:27:45,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226691278] [2020-09-14 23:27:45,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:27:45,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:45,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:27:45,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:27:45,491 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-14 23:27:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:45,514 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-09-14 23:27:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:27:45,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:27:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:45,515 INFO L225 Difference]: With dead ends: 63 [2020-09-14 23:27:45,515 INFO L226 Difference]: Without dead ends: 38 [2020-09-14 23:27:45,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:27:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-14 23:27:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-14 23:27:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-14 23:27:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-14 23:27:45,518 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-09-14 23:27:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:45,518 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-14 23:27:45,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:27:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-14 23:27:45,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:27:45,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:45,519 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 23:27:45,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 23:27:45,520 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:45,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-09-14 23:27:45,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:45,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243234454] [2020-09-14 23:27:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:45,576 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 23:27:45,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243234454] [2020-09-14 23:27:45,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:45,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 23:27:45,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803665633] [2020-09-14 23:27:45,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:27:45,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:45,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:27:45,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:27:45,578 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-14 23:27:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:45,596 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-14 23:27:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 23:27:45,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:27:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:45,597 INFO L225 Difference]: With dead ends: 56 [2020-09-14 23:27:45,597 INFO L226 Difference]: Without dead ends: 35 [2020-09-14 23:27:45,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 23:27:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-14 23:27:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-14 23:27:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-14 23:27:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-14 23:27:45,599 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-14 23:27:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:45,600 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-14 23:27:45,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:27:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-14 23:27:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 23:27:45,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 23:27:45,601 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 23:27:45,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 23:27:45,601 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 23:27:45,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 23:27:45,601 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-09-14 23:27:45,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 23:27:45,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122489014] [2020-09-14 23:27:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 23:27:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 23:27:45,655 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 23:27:45,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122489014] [2020-09-14 23:27:45,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 23:27:45,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 23:27:45,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484840458] [2020-09-14 23:27:45,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 23:27:45,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 23:27:45,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 23:27:45,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 23:27:45,657 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-14 23:27:45,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 23:27:45,671 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-14 23:27:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 23:27:45,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-14 23:27:45,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 23:27:45,672 INFO L225 Difference]: With dead ends: 34 [2020-09-14 23:27:45,672 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 23:27:45,673 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 23:27:45,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 23:27:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 23:27:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 23:27:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 23:27:45,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-14 23:27:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 23:27:45,674 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 23:27:45,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 23:27:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 23:27:45,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 23:27:45,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 23:27:45,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 11:27:45 BasicIcfg [2020-09-14 23:27:45,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 23:27:45,681 INFO L168 Benchmark]: Toolchain (without parser) took 5101.52 ms. Allocated memory was 147.3 MB in the beginning and 249.0 MB in the end (delta: 101.7 MB). Free memory was 101.3 MB in the beginning and 131.8 MB in the end (delta: -30.5 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-09-14 23:27:45,682 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-14 23:27:45,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 795.36 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 162.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-14 23:27:45,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.95 ms. Allocated memory is still 204.5 MB. Free memory was 162.7 MB in the beginning and 160.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-14 23:27:45,685 INFO L168 Benchmark]: Boogie Preprocessor took 30.94 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 23:27:45,686 INFO L168 Benchmark]: RCFGBuilder took 492.94 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-14 23:27:45,686 INFO L168 Benchmark]: TraceAbstraction took 3717.04 ms. Allocated memory was 204.5 MB in the beginning and 249.0 MB in the end (delta: 44.6 MB). Free memory was 136.0 MB in the beginning and 131.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-09-14 23:27:45,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 795.36 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 162.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.95 ms. Allocated memory is still 204.5 MB. Free memory was 162.7 MB in the beginning and 160.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.94 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.94 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3717.04 ms. Allocated memory was 204.5 MB in the beginning and 249.0 MB in the end (delta: 44.6 MB). Free memory was 136.0 MB in the beginning and 131.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 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: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...