/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/safe028_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:37:42,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:37:42,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:37:42,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:37:42,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:37:42,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:37:42,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:37:42,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:37:42,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:37:42,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:37:42,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:37:42,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:37:42,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:37:42,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:37:42,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:37:42,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:37:42,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:37:42,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:37:42,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:37:42,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:37:42,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:37:42,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:37:42,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:37:42,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:37:42,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 23:37:42,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 23:37:42,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 23:37:42,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 23:37:42,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 23:37:42,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 23:37:42,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:37:42,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:37:42,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:37:42,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:37:42,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:37:42,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:37:42,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:37:42,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:37:42,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:37:42,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:37:42,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:37:42,408 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 23:37:42,450 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:37:42,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:37:42,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:37:42,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:37:42,455 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:37:42,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:37:42,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:37:42,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:37:42,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:37:42,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:37:42,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:37:42,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:37:42,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:37:42,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:37:42,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:37:42,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:37:42,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:37:42,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:37:42,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:37:42,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:37:42,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:37:42,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:37:42,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:37:42,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:37:42,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:37:42,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:37:42,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:37:42,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:37:42,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:37:42,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:37:42,864 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:37:42,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i [2021-01-06 23:37:42,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/243816a26/58860803aabb45a08b6ae4a951443c01/FLAGa26d75b07 [2021-01-06 23:37:43,555 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:37:43,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i [2021-01-06 23:37:43,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/243816a26/58860803aabb45a08b6ae4a951443c01/FLAGa26d75b07 [2021-01-06 23:37:43,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/243816a26/58860803aabb45a08b6ae4a951443c01 [2021-01-06 23:37:43,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:37:43,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:37:43,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:37:43,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:37:43,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:37:43,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:37:43" (1/1) ... [2021-01-06 23:37:43,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138aa68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:43, skipping insertion in model container [2021-01-06 23:37:43,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:37:43" (1/1) ... [2021-01-06 23:37:43,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:37:43,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:37:44,067 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/safe028_pso.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[~__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[~__unbuffered_p2_EBX~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:37:44,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:37:44,348 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:37:44,362 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:37:44,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:37:44,479 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:37:44,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44 WrapperNode [2021-01-06 23:37:44,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:37:44,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:37:44,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:37:44,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:37:44,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:37:44,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:37:44,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:37:44,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:37:44,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (1/1) ... [2021-01-06 23:37:44,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:37:44,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:37:44,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:37:44,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:37:44,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (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 23:37:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:37:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:37:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:37:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:37:44,743 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:37:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:37:44,744 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:37:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:37:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:37:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:37:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:37:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:37:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:37:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:37:44,749 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 23:37:45,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:37:45,202 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:37:45,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:45 BoogieIcfgContainer [2021-01-06 23:37:45,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:37:45,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:37:45,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:37:45,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:37:45,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:37:43" (1/3) ... [2021-01-06 23:37:45,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7901fffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:37:45, skipping insertion in model container [2021-01-06 23:37:45,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:37:44" (2/3) ... [2021-01-06 23:37:45,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7901fffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:37:45, skipping insertion in model container [2021-01-06 23:37:45,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:45" (3/3) ... [2021-01-06 23:37:45,214 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc.i [2021-01-06 23:37:45,221 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:37:45,221 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:37:45,227 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:37:45,228 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:37:45,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,265 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,266 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,266 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,266 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,266 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,267 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,267 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,267 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,267 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,268 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,268 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,269 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,269 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,269 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,269 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,273 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,273 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,279 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,280 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,283 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,283 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,284 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:37:45,286 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:37:45,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:37:45,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:37:45,331 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:37:45,331 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:37:45,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:37:45,331 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:37:45,332 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:37:45,332 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:37:45,332 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:37:45,346 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:37:45,348 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:37:45,352 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:37:45,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-01-06 23:37:45,399 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-01-06 23:37:45,399 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:37:45,404 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 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-01-06 23:37:45,410 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-01-06 23:37:47,997 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 23:37:48,285 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-01-06 23:37:48,432 INFO L131 LiptonReduction]: Checked pairs total: 2149 [2021-01-06 23:37:48,433 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-01-06 23:37:48,440 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-01-06 23:37:48,478 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2021-01-06 23:37:48,480 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-01-06 23:37:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:37:48,489 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:48,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:48,490 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:48,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:48,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1647971710, now seen corresponding path program 1 times [2021-01-06 23:37:48,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:48,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089427395] [2021-01-06 23:37:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:48,724 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 23:37:48,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089427395] [2021-01-06 23:37:48,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:48,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:48,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972682823] [2021-01-06 23:37:48,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:37:48,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:48,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:37:48,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:37:48,755 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2021-01-06 23:37:48,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:48,800 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2021-01-06 23:37:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:37:48,802 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:37:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:48,817 INFO L225 Difference]: With dead ends: 274 [2021-01-06 23:37:48,818 INFO L226 Difference]: Without dead ends: 226 [2021-01-06 23:37:48,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:37:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-06 23:37:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-01-06 23:37:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-01-06 23:37:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2021-01-06 23:37:48,885 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2021-01-06 23:37:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:48,888 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2021-01-06 23:37:48,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:37:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2021-01-06 23:37:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:37:48,891 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:48,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:48,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:37:48,892 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:48,893 INFO L82 PathProgramCache]: Analyzing trace with hash -452492411, now seen corresponding path program 1 times [2021-01-06 23:37:48,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:48,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369819040] [2021-01-06 23:37:48,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:49,101 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 23:37:49,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369819040] [2021-01-06 23:37:49,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:49,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:49,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717406083] [2021-01-06 23:37:49,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:49,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:49,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:49,108 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2021-01-06 23:37:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:49,150 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2021-01-06 23:37:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:37:49,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:37:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:49,158 INFO L225 Difference]: With dead ends: 250 [2021-01-06 23:37:49,158 INFO L226 Difference]: Without dead ends: 202 [2021-01-06 23:37:49,159 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 23:37:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-01-06 23:37:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-01-06 23:37:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-01-06 23:37:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2021-01-06 23:37:49,198 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2021-01-06 23:37:49,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:49,199 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2021-01-06 23:37:49,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2021-01-06 23:37:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:37:49,202 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:49,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:49,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:37:49,203 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:49,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1142322672, now seen corresponding path program 1 times [2021-01-06 23:37:49,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:49,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568920001] [2021-01-06 23:37:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:49,334 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 23:37:49,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568920001] [2021-01-06 23:37:49,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:49,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:49,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600621239] [2021-01-06 23:37:49,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:49,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:49,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:49,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:49,337 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2021-01-06 23:37:49,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:49,400 INFO L93 Difference]: Finished difference Result 262 states and 697 transitions. [2021-01-06 23:37:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:37:49,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:37:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:49,402 INFO L225 Difference]: With dead ends: 262 [2021-01-06 23:37:49,403 INFO L226 Difference]: Without dead ends: 154 [2021-01-06 23:37:49,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:37:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-01-06 23:37:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-01-06 23:37:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2021-01-06 23:37:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 392 transitions. [2021-01-06 23:37:49,425 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 392 transitions. Word has length 10 [2021-01-06 23:37:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:49,425 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 392 transitions. [2021-01-06 23:37:49,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 392 transitions. [2021-01-06 23:37:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:37:49,432 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:49,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:49,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:37:49,434 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:49,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:49,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2010812812, now seen corresponding path program 1 times [2021-01-06 23:37:49,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:49,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072424720] [2021-01-06 23:37:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:49,497 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 23:37:49,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072424720] [2021-01-06 23:37:49,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:49,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:37:49,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338474272] [2021-01-06 23:37:49,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:37:49,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:49,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:37:49,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:37:49,500 INFO L87 Difference]: Start difference. First operand 154 states and 392 transitions. Second operand 3 states. [2021-01-06 23:37:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:49,509 INFO L93 Difference]: Finished difference Result 130 states and 299 transitions. [2021-01-06 23:37:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:37:49,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-01-06 23:37:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:49,511 INFO L225 Difference]: With dead ends: 130 [2021-01-06 23:37:49,511 INFO L226 Difference]: Without dead ends: 130 [2021-01-06 23:37:49,512 INFO L677 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 [2021-01-06 23:37:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-01-06 23:37:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-01-06 23:37:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2021-01-06 23:37:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 299 transitions. [2021-01-06 23:37:49,517 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 299 transitions. Word has length 11 [2021-01-06 23:37:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:49,518 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 299 transitions. [2021-01-06 23:37:49,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:37:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 299 transitions. [2021-01-06 23:37:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:37:49,519 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:49,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:49,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:37:49,519 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:49,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:49,520 INFO L82 PathProgramCache]: Analyzing trace with hash -216590115, now seen corresponding path program 1 times [2021-01-06 23:37:49,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:49,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112564532] [2021-01-06 23:37:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:49,607 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 23:37:49,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112564532] [2021-01-06 23:37:49,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:49,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:37:49,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625999476] [2021-01-06 23:37:49,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:37:49,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:49,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:37:49,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:37:49,611 INFO L87 Difference]: Start difference. First operand 130 states and 299 transitions. Second operand 4 states. [2021-01-06 23:37:49,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:49,635 INFO L93 Difference]: Finished difference Result 92 states and 186 transitions. [2021-01-06 23:37:49,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:37:49,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-01-06 23:37:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:49,650 INFO L225 Difference]: With dead ends: 92 [2021-01-06 23:37:49,651 INFO L226 Difference]: Without dead ends: 92 [2021-01-06 23:37:49,651 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 23:37:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-01-06 23:37:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-01-06 23:37:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-01-06 23:37:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2021-01-06 23:37:49,656 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 12 [2021-01-06 23:37:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:49,656 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2021-01-06 23:37:49,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:37:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2021-01-06 23:37:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:37:49,657 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:49,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:49,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:37:49,658 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:49,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:49,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1316923756, now seen corresponding path program 1 times [2021-01-06 23:37:49,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:49,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487958785] [2021-01-06 23:37:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:49,714 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 23:37:49,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487958785] [2021-01-06 23:37:49,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:49,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:37:49,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279092146] [2021-01-06 23:37:49,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:49,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:49,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:49,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:49,717 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 5 states. [2021-01-06 23:37:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:49,740 INFO L93 Difference]: Finished difference Result 73 states and 148 transitions. [2021-01-06 23:37:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:37:49,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 23:37:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:49,741 INFO L225 Difference]: With dead ends: 73 [2021-01-06 23:37:49,741 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 23:37:49,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 23:37:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-01-06 23:37:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-01-06 23:37:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 148 transitions. [2021-01-06 23:37:49,746 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 148 transitions. Word has length 14 [2021-01-06 23:37:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:49,746 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 148 transitions. [2021-01-06 23:37:49,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 148 transitions. [2021-01-06 23:37:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 23:37:49,747 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:49,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:49,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:37:49,748 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:49,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash 193291591, now seen corresponding path program 1 times [2021-01-06 23:37:49,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:49,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631627336] [2021-01-06 23:37:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:49,826 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 23:37:49,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631627336] [2021-01-06 23:37:49,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:49,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:37:49,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582092585] [2021-01-06 23:37:49,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:49,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:49,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:49,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:49,829 INFO L87 Difference]: Start difference. First operand 73 states and 148 transitions. Second operand 5 states. [2021-01-06 23:37:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:49,860 INFO L93 Difference]: Finished difference Result 87 states and 170 transitions. [2021-01-06 23:37:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:37:49,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 23:37:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:49,862 INFO L225 Difference]: With dead ends: 87 [2021-01-06 23:37:49,862 INFO L226 Difference]: Without dead ends: 34 [2021-01-06 23:37:49,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:37:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-06 23:37:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-01-06 23:37:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-06 23:37:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2021-01-06 23:37:49,865 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 17 [2021-01-06 23:37:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:49,865 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2021-01-06 23:37:49,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2021-01-06 23:37:49,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 23:37:49,866 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:37:49,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:37:49,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:37:49,867 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:37:49,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:37:49,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1222037843, now seen corresponding path program 2 times [2021-01-06 23:37:49,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:37:49,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109261258] [2021-01-06 23:37:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:37:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:37:49,953 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 23:37:49,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109261258] [2021-01-06 23:37:49,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:37:49,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:37:49,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659901361] [2021-01-06 23:37:49,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:37:49,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:37:49,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:37:49,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:37:49,957 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2021-01-06 23:37:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:37:49,986 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2021-01-06 23:37:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:37:49,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-01-06 23:37:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:37:49,995 INFO L225 Difference]: With dead ends: 33 [2021-01-06 23:37:49,995 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:37:49,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:37:49,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:37:49,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:37:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:37:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:37:49,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-01-06 23:37:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:37:49,997 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:37:49,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:37:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:37:49,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:37:49,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:37:50,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:37:50 BasicIcfg [2021-01-06 23:37:50,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:37:50,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:37:50,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:37:50,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:37:50,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:37:45" (3/4) ... [2021-01-06 23:37:50,007 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:37:50,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:37:50,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:37:50,015 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:37:50,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:37:50,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:37:50,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:37:50,023 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:37:50,091 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe028_pso.oepc.i-witness.graphml [2021-01-06 23:37:50,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:37:50,093 INFO L168 Benchmark]: Toolchain (without parser) took 6273.41 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 140.1 MB in the beginning and 163.0 MB in the end (delta: -23.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:50,093 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory was 132.1 MB in the beginning and 132.0 MB in the end (delta: 80.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:37:50,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.49 ms. Allocated memory is still 160.4 MB. Free memory was 139.9 MB in the beginning and 109.0 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:50,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.66 ms. Allocated memory is still 160.4 MB. Free memory was 108.9 MB in the beginning and 141.5 MB in the end (delta: -32.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:50,095 INFO L168 Benchmark]: Boogie Preprocessor took 50.00 ms. Allocated memory is still 160.4 MB. Free memory was 141.5 MB in the beginning and 139.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:50,096 INFO L168 Benchmark]: RCFGBuilder took 558.93 ms. Allocated memory is still 160.4 MB. Free memory was 139.8 MB in the beginning and 117.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:50,096 INFO L168 Benchmark]: TraceAbstraction took 4794.63 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 117.3 MB in the beginning and 166.2 MB in the end (delta: -48.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:50,097 INFO L168 Benchmark]: Witness Printer took 90.04 ms. Allocated memory is still 231.7 MB. Free memory was 166.2 MB in the beginning and 163.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:37:50,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory was 132.1 MB in the beginning and 132.0 MB in the end (delta: 80.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 659.49 ms. Allocated memory is still 160.4 MB. Free memory was 139.9 MB in the beginning and 109.0 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 112.66 ms. Allocated memory is still 160.4 MB. Free memory was 108.9 MB in the beginning and 141.5 MB in the end (delta: -32.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.00 ms. Allocated memory is still 160.4 MB. Free memory was 141.5 MB in the beginning and 139.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 558.93 ms. Allocated memory is still 160.4 MB. Free memory was 139.8 MB in the beginning and 117.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4794.63 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 117.3 MB in the beginning and 166.2 MB in the end (delta: -48.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. * Witness Printer took 90.04 ms. Allocated memory is still 231.7 MB. Free memory was 166.2 MB in the beginning and 163.0 MB in the end (delta: 3.2 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 784 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 2149 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: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 148 SDtfs, 126 SDslu, 207 SDs, 0 SdLazy, 77 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...