/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:34:04,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:34:04,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:34:04,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:34:04,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:34:04,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:34:04,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:34:04,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:34:04,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:34:04,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:34:04,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:34:04,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:34:04,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:34:04,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:34:04,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:34:04,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:34:04,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:34:04,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:34:04,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:34:04,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:34:04,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:34:04,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:34:04,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:34:04,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:34:04,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 23:34:04,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 23:34:04,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 23:34:04,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 23:34:04,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 23:34:04,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 23:34:04,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:34:04,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:34:04,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:34:04,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:34:04,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:34:04,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:34:04,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:34:04,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:34:04,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:34:04,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:34:04,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:34:04,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:34:04,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:34:04,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:34:04,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:34:04,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:34:04,250 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:34:04,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:34:04,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:34:04,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:34:04,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:34:04,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:34:04,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:34:04,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:34:04,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:34:04,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:34:04,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:34:04,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:34:04,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:34:04,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:34:04,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:34:04,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:34:04,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:34:04,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:34:04,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:34:04,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:34:04,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:34:04,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:34:04,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:34:04,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:34:04,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:34:04,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:34:04,747 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:34:04,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2021-01-06 23:34:04,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3646b9d5d/9743a0dd90af4832bce1314db5402ebe/FLAG494483eb3 [2021-01-06 23:34:05,580 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:34:05,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2021-01-06 23:34:05,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3646b9d5d/9743a0dd90af4832bce1314db5402ebe/FLAG494483eb3 [2021-01-06 23:34:05,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3646b9d5d/9743a0dd90af4832bce1314db5402ebe [2021-01-06 23:34:05,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:34:05,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:34:05,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:34:05,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:34:05,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:34:05,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:34:05" (1/1) ... [2021-01-06 23:34:05,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d0c004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:05, skipping insertion in model container [2021-01-06 23:34:05,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:34:05" (1/1) ... [2021-01-06 23:34:05,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:34:05,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:34:05,881 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:34:06,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:34:06,201 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:34:06,219 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:34:06,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:34:06,350 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:34:06,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06 WrapperNode [2021-01-06 23:34:06,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:34:06,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:34:06,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:34:06,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:34:06,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:34:06,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:34:06,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:34:06,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:34:06,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... [2021-01-06 23:34:06,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:34:06,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:34:06,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:34:06,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:34:06,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:34:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:34:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:34:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:34:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:34:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:34:06,574 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:34:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:34:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:34:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:34:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:34:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:34:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:34:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:34:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:34:06,596 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:34:07,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:34:07,205 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:34:07,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:07 BoogieIcfgContainer [2021-01-06 23:34:07,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:34:07,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:34:07,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:34:07,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:34:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:34:05" (1/3) ... [2021-01-06 23:34:07,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16800fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:34:07, skipping insertion in model container [2021-01-06 23:34:07,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:34:06" (2/3) ... [2021-01-06 23:34:07,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16800fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:34:07, skipping insertion in model container [2021-01-06 23:34:07,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:07" (3/3) ... [2021-01-06 23:34:07,222 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-01-06 23:34:07,231 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:34:07,232 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:34:07,238 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:34:07,240 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:34:07,302 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,303 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,308 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,321 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,335 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,336 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,346 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,346 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,347 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:34:07,351 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:34:07,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:34:07,414 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:34:07,414 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:34:07,414 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:34:07,415 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:34:07,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:34:07,415 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:34:07,415 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:34:07,416 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:34:07,434 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:34:07,436 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:34:07,441 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:34:07,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-01-06 23:34:07,519 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-01-06 23:34:07,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:34:07,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-01-06 23:34:07,541 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-01-06 23:34:10,834 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:34:11,161 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-01-06 23:34:11,491 INFO L131 LiptonReduction]: Checked pairs total: 2553 [2021-01-06 23:34:11,491 INFO L133 LiptonReduction]: Total number of compositions: 64 [2021-01-06 23:34:11,499 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-01-06 23:34:11,526 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2021-01-06 23:34:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2021-01-06 23:34:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:34:11,537 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:11,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:11,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:11,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1555009458, now seen corresponding path program 1 times [2021-01-06 23:34:11,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:11,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910669625] [2021-01-06 23:34:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:11,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910669625] [2021-01-06 23:34:11,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:11,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:34:11,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88778125] [2021-01-06 23:34:11,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:34:11,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:11,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:34:11,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:34:11,930 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2021-01-06 23:34:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:12,002 INFO L93 Difference]: Finished difference Result 457 states and 1253 transitions. [2021-01-06 23:34:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:34:12,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-01-06 23:34:12,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:12,023 INFO L225 Difference]: With dead ends: 457 [2021-01-06 23:34:12,024 INFO L226 Difference]: Without dead ends: 315 [2021-01-06 23:34:12,025 INFO L677 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 [2021-01-06 23:34:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-01-06 23:34:12,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2021-01-06 23:34:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2021-01-06 23:34:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2021-01-06 23:34:12,113 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2021-01-06 23:34:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:12,114 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2021-01-06 23:34:12,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:34:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2021-01-06 23:34:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:34:12,117 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:12,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:12,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:34:12,117 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:12,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1099271783, now seen corresponding path program 1 times [2021-01-06 23:34:12,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:12,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379176976] [2021-01-06 23:34:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:12,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379176976] [2021-01-06 23:34:12,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:12,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:12,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655189404] [2021-01-06 23:34:12,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:12,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:12,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:12,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,241 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand 4 states. [2021-01-06 23:34:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:12,283 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2021-01-06 23:34:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:34:12,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:34:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:12,291 INFO L225 Difference]: With dead ends: 293 [2021-01-06 23:34:12,292 INFO L226 Difference]: Without dead ends: 293 [2021-01-06 23:34:12,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-01-06 23:34:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2021-01-06 23:34:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2021-01-06 23:34:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2021-01-06 23:34:12,341 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2021-01-06 23:34:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:12,342 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2021-01-06 23:34:12,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2021-01-06 23:34:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:34:12,344 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:12,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:12,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:34:12,345 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:12,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:12,346 INFO L82 PathProgramCache]: Analyzing trace with hash -285096968, now seen corresponding path program 1 times [2021-01-06 23:34:12,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:12,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726878413] [2021-01-06 23:34:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:12,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726878413] [2021-01-06 23:34:12,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:12,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:12,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089485307] [2021-01-06 23:34:12,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:12,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:12,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:12,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,508 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand 4 states. [2021-01-06 23:34:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:12,541 INFO L93 Difference]: Finished difference Result 282 states and 718 transitions. [2021-01-06 23:34:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:34:12,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 23:34:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:12,545 INFO L225 Difference]: With dead ends: 282 [2021-01-06 23:34:12,545 INFO L226 Difference]: Without dead ends: 282 [2021-01-06 23:34:12,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-01-06 23:34:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 248. [2021-01-06 23:34:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-01-06 23:34:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 641 transitions. [2021-01-06 23:34:12,562 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 641 transitions. Word has length 10 [2021-01-06 23:34:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:12,563 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 641 transitions. [2021-01-06 23:34:12,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 641 transitions. [2021-01-06 23:34:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:34:12,565 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:12,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:12,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:34:12,566 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:12,567 INFO L82 PathProgramCache]: Analyzing trace with hash -285109461, now seen corresponding path program 1 times [2021-01-06 23:34:12,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:12,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704187961] [2021-01-06 23:34:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:12,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704187961] [2021-01-06 23:34:12,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:12,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:12,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279191883] [2021-01-06 23:34:12,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:12,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:12,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:12,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,637 INFO L87 Difference]: Start difference. First operand 248 states and 641 transitions. Second operand 4 states. [2021-01-06 23:34:12,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:12,671 INFO L93 Difference]: Finished difference Result 264 states and 666 transitions. [2021-01-06 23:34:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:34:12,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 23:34:12,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:12,675 INFO L225 Difference]: With dead ends: 264 [2021-01-06 23:34:12,676 INFO L226 Difference]: Without dead ends: 264 [2021-01-06 23:34:12,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-01-06 23:34:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2021-01-06 23:34:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-01-06 23:34:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 562 transitions. [2021-01-06 23:34:12,688 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 562 transitions. Word has length 10 [2021-01-06 23:34:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:12,689 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 562 transitions. [2021-01-06 23:34:12,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 562 transitions. [2021-01-06 23:34:12,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:34:12,691 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:12,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:12,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:34:12,692 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:12,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:12,692 INFO L82 PathProgramCache]: Analyzing trace with hash -162369203, now seen corresponding path program 1 times [2021-01-06 23:34:12,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:12,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889800751] [2021-01-06 23:34:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:12,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889800751] [2021-01-06 23:34:12,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:12,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:12,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057560239] [2021-01-06 23:34:12,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:12,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:12,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:12,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,784 INFO L87 Difference]: Start difference. First operand 222 states and 562 transitions. Second operand 4 states. [2021-01-06 23:34:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:12,821 INFO L93 Difference]: Finished difference Result 252 states and 633 transitions. [2021-01-06 23:34:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:34:12,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:34:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:12,832 INFO L225 Difference]: With dead ends: 252 [2021-01-06 23:34:12,832 INFO L226 Difference]: Without dead ends: 252 [2021-01-06 23:34:12,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-01-06 23:34:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 200. [2021-01-06 23:34:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-01-06 23:34:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2021-01-06 23:34:12,844 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2021-01-06 23:34:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:12,845 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2021-01-06 23:34:12,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2021-01-06 23:34:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:34:12,855 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:12,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:12,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:34:12,855 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:12,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:12,861 INFO L82 PathProgramCache]: Analyzing trace with hash -732205193, now seen corresponding path program 1 times [2021-01-06 23:34:12,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:12,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897228479] [2021-01-06 23:34:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:12,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897228479] [2021-01-06 23:34:12,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:12,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:12,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589915428] [2021-01-06 23:34:12,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:12,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:12,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:12,975 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand 5 states. [2021-01-06 23:34:13,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:13,016 INFO L93 Difference]: Finished difference Result 304 states and 741 transitions. [2021-01-06 23:34:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:13,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:34:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:13,018 INFO L225 Difference]: With dead ends: 304 [2021-01-06 23:34:13,019 INFO L226 Difference]: Without dead ends: 200 [2021-01-06 23:34:13,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-01-06 23:34:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 176. [2021-01-06 23:34:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-01-06 23:34:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 429 transitions. [2021-01-06 23:34:13,028 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 429 transitions. Word has length 12 [2021-01-06 23:34:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:13,029 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 429 transitions. [2021-01-06 23:34:13,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 429 transitions. [2021-01-06 23:34:13,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:34:13,030 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:13,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:13,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:34:13,030 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:13,031 INFO L82 PathProgramCache]: Analyzing trace with hash -737567573, now seen corresponding path program 2 times [2021-01-06 23:34:13,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:13,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136794797] [2021-01-06 23:34:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:13,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136794797] [2021-01-06 23:34:13,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:13,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:13,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789089251] [2021-01-06 23:34:13,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:13,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:13,091 INFO L87 Difference]: Start difference. First operand 176 states and 429 transitions. Second operand 5 states. [2021-01-06 23:34:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:13,141 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2021-01-06 23:34:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:13,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:34:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:13,143 INFO L225 Difference]: With dead ends: 228 [2021-01-06 23:34:13,143 INFO L226 Difference]: Without dead ends: 148 [2021-01-06 23:34:13,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-01-06 23:34:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2021-01-06 23:34:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-01-06 23:34:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 279 transitions. [2021-01-06 23:34:13,150 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 279 transitions. Word has length 12 [2021-01-06 23:34:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:13,150 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 279 transitions. [2021-01-06 23:34:13,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 279 transitions. [2021-01-06 23:34:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:34:13,151 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:13,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:13,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:34:13,152 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash -738490133, now seen corresponding path program 3 times [2021-01-06 23:34:13,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:13,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420596407] [2021-01-06 23:34:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:13,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420596407] [2021-01-06 23:34:13,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:13,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:34:13,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454747210] [2021-01-06 23:34:13,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:34:13,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:13,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:34:13,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:34:13,232 INFO L87 Difference]: Start difference. First operand 124 states and 279 transitions. Second operand 4 states. [2021-01-06 23:34:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:13,268 INFO L93 Difference]: Finished difference Result 138 states and 286 transitions. [2021-01-06 23:34:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:34:13,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 23:34:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:13,270 INFO L225 Difference]: With dead ends: 138 [2021-01-06 23:34:13,270 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 23:34:13,270 INFO L677 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 [2021-01-06 23:34:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 23:34:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-01-06 23:34:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-01-06 23:34:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 218 transitions. [2021-01-06 23:34:13,275 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 218 transitions. Word has length 12 [2021-01-06 23:34:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:13,275 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 218 transitions. [2021-01-06 23:34:13,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:34:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 218 transitions. [2021-01-06 23:34:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:34:13,276 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:13,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:13,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:34:13,277 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:13,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1418345754, now seen corresponding path program 1 times [2021-01-06 23:34:13,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:13,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478991877] [2021-01-06 23:34:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:13,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478991877] [2021-01-06 23:34:13,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:13,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:34:13,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477353686] [2021-01-06 23:34:13,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:34:13,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:13,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:34:13,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:34:13,347 INFO L87 Difference]: Start difference. First operand 106 states and 218 transitions. Second operand 5 states. [2021-01-06 23:34:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:13,400 INFO L93 Difference]: Finished difference Result 101 states and 198 transitions. [2021-01-06 23:34:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:13,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:34:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:13,402 INFO L225 Difference]: With dead ends: 101 [2021-01-06 23:34:13,402 INFO L226 Difference]: Without dead ends: 81 [2021-01-06 23:34:13,402 INFO L677 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 [2021-01-06 23:34:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-01-06 23:34:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-01-06 23:34:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 23:34:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 157 transitions. [2021-01-06 23:34:13,406 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 157 transitions. Word has length 13 [2021-01-06 23:34:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:13,406 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 157 transitions. [2021-01-06 23:34:13,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:34:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 157 transitions. [2021-01-06 23:34:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:34:13,407 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:34:13,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:34:13,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:34:13,408 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:34:13,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:34:13,408 INFO L82 PathProgramCache]: Analyzing trace with hash -226822936, now seen corresponding path program 1 times [2021-01-06 23:34:13,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:34:13,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201453121] [2021-01-06 23:34:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:34:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:34:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:34:13,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201453121] [2021-01-06 23:34:13,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:34:13,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:34:13,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18110631] [2021-01-06 23:34:13,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:34:13,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:34:13,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:34:13,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:34:13,544 INFO L87 Difference]: Start difference. First operand 81 states and 157 transitions. Second operand 6 states. [2021-01-06 23:34:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:34:13,579 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2021-01-06 23:34:13,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:34:13,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 23:34:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:34:13,580 INFO L225 Difference]: With dead ends: 76 [2021-01-06 23:34:13,580 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:34:13,580 INFO L677 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 [2021-01-06 23:34:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:34:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:34:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:34:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:34:13,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-01-06 23:34:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:34:13,582 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:34:13,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:34:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:34:13,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:34:13,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:34:13,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:34:13 BasicIcfg [2021-01-06 23:34:13,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:34:13,589 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:34:13,589 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:34:13,589 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:34:13,590 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:34:07" (3/4) ... [2021-01-06 23:34:13,595 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:34:13,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:34:13,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:34:13,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:34:13,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:34:13,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:34:13,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:34:13,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:34:13,684 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe015_tso.oepc.i-witness.graphml [2021-01-06 23:34:13,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:34:13,686 INFO L168 Benchmark]: Toolchain (without parser) took 8042.01 ms. Allocated memory was 151.0 MB in the beginning and 241.2 MB in the end (delta: 90.2 MB). Free memory was 124.5 MB in the beginning and 208.0 MB in the end (delta: -83.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:13,687 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:34:13,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 93.0 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:13,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.88 ms. Allocated memory is still 151.0 MB. Free memory was 93.0 MB in the beginning and 91.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:13,693 INFO L168 Benchmark]: Boogie Preprocessor took 32.09 ms. Allocated memory is still 151.0 MB. Free memory was 90.9 MB in the beginning and 89.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:13,693 INFO L168 Benchmark]: RCFGBuilder took 765.92 ms. Allocated memory is still 151.0 MB. Free memory was 89.9 MB in the beginning and 115.3 MB in the end (delta: -25.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:13,699 INFO L168 Benchmark]: TraceAbstraction took 6378.33 ms. Allocated memory was 151.0 MB in the beginning and 241.2 MB in the end (delta: 90.2 MB). Free memory was 114.8 MB in the beginning and 210.6 MB in the end (delta: -95.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:34:13,700 INFO L168 Benchmark]: Witness Printer took 95.77 ms. Allocated memory is still 241.2 MB. Free memory was 210.6 MB in the beginning and 208.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:34:13,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 705.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 93.0 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.88 ms. Allocated memory is still 151.0 MB. Free memory was 93.0 MB in the beginning and 91.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.09 ms. Allocated memory is still 151.0 MB. Free memory was 90.9 MB in the beginning and 89.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 765.92 ms. Allocated memory is still 151.0 MB. Free memory was 89.9 MB in the beginning and 115.3 MB in the end (delta: -25.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6378.33 ms. Allocated memory was 151.0 MB in the beginning and 241.2 MB in the end (delta: 90.2 MB). Free memory was 114.8 MB in the beginning and 210.6 MB in the end (delta: -95.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 95.77 ms. Allocated memory is still 241.2 MB. Free memory was 210.6 MB in the beginning and 208.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 796 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2553 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 187 SDtfs, 205 SDslu, 256 SDs, 0 SdLazy, 143 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 247 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 5766 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...