/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/safe036_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:46:37,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:46:37,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:46:37,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:46:37,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:46:37,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:46:37,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:46:37,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:46:37,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:46:37,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:46:37,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:46:37,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:46:37,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:46:37,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:46:37,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:46:37,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:46:37,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:46:37,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:46:38,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:46:38,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:46:38,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:46:38,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:46:38,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:46:38,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:46:38,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:46:38,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:46:38,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:46:38,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:46:38,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:46:38,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:46:38,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:46:38,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:46:38,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:46:38,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:46:38,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:46:38,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:46:38,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:46:38,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:46:38,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:46:38,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:46:38,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:46:38,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:46:38,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:46:38,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:46:38,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:46:38,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:46:38,106 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:46:38,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:46:38,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:46:38,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:46:38,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:46:38,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:46:38,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:46:38,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:46:38,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:46:38,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:46:38,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:46:38,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:46:38,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:46:38,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:46:38,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:46:38,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:46:38,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:46:38,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:46:38,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:46:38,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:46:38,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:46:38,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:46:38,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:46:38,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:46:38,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:46:38,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:46:38,643 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:46:38,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe036_power.opt.i [2020-12-23 13:46:38,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d346e48dd/12ee63f909684962b73b3dcb2d53e316/FLAGa79ada9e3 [2020-12-23 13:46:39,553 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:46:39,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_power.opt.i [2020-12-23 13:46:39,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d346e48dd/12ee63f909684962b73b3dcb2d53e316/FLAGa79ada9e3 [2020-12-23 13:46:39,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d346e48dd/12ee63f909684962b73b3dcb2d53e316 [2020-12-23 13:46:39,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:46:39,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:46:39,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:46:39,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:46:39,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:46:39,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9d9bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:39, skipping insertion in model container [2020-12-23 13:46:39,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:46:39" (1/1) ... [2020-12-23 13:46:39,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:46:39,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:46:40,088 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/safe036_power.opt.i[951,964] 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_p1_EAX~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:46:40,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:46:40,381 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:46:40,400 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe036_power.opt.i[951,964] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:46:40,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:46:40,651 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:46:40,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40 WrapperNode [2020-12-23 13:46:40,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:46:40,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:46:40,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:46:40,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:46:40,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:46:40,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:46:40,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:46:40,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:46:40,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (1/1) ... [2020-12-23 13:46:40,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:46:40,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:46:40,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:46:40,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:46:40,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (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 [2020-12-23 13:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:46:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:46:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:46:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:46:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:46:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:46:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:46:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:46:40,881 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:46:41,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:46:41,300 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:46:41,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:41 BoogieIcfgContainer [2020-12-23 13:46:41,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:46:41,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:46:41,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:46:41,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:46:41,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:46:39" (1/3) ... [2020-12-23 13:46:41,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6452d1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:46:41, skipping insertion in model container [2020-12-23 13:46:41,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:46:40" (2/3) ... [2020-12-23 13:46:41,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6452d1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:46:41, skipping insertion in model container [2020-12-23 13:46:41,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:41" (3/3) ... [2020-12-23 13:46:41,317 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_power.opt.i [2020-12-23 13:46:41,325 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:46:41,326 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:46:41,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:46:41,332 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:46:41,368 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,369 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,369 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,370 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,370 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,370 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,371 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,372 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,372 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,372 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,377 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,384 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,385 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:46:41,387 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:46:41,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 13:46:41,432 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:46:41,433 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:46:41,433 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:46:41,433 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:46:41,433 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:46:41,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:46:41,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:46:41,434 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:46:41,447 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:46:41,450 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:41,453 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:41,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-23 13:46:41,501 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-23 13:46:41,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:46:41,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-23 13:46:41,508 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-23 13:46:44,112 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:46:44,443 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:46:44,551 INFO L131 LiptonReduction]: Checked pairs total: 1354 [2020-12-23 13:46:44,551 INFO L133 LiptonReduction]: Total number of compositions: 55 [2020-12-23 13:46:44,558 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-23 13:46:44,573 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-23 13:46:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-23 13:46:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 13:46:44,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:44,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 13:46:44,583 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1865783441, now seen corresponding path program 1 times [2020-12-23 13:46:44,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:44,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662549486] [2020-12-23 13:46:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:44,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662549486] [2020-12-23 13:46:44,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:44,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:46:44,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531531620] [2020-12-23 13:46:44,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:46:44,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:44,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:46:44,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:46:44,838 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-23 13:46:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:44,868 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-23 13:46:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:46:44,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-23 13:46:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:44,884 INFO L225 Difference]: With dead ends: 90 [2020-12-23 13:46:44,885 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 13:46:44,886 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 [2020-12-23 13:46:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 13:46:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-23 13:46:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 13:46:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-23 13:46:44,954 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-23 13:46:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:44,955 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-23 13:46:44,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:46:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-23 13:46:44,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 13:46:44,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:44,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:44,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:46:44,957 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:44,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2004756257, now seen corresponding path program 1 times [2020-12-23 13:46:44,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:44,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699435121] [2020-12-23 13:46:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:45,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699435121] [2020-12-23 13:46:45,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:45,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:46:45,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117276740] [2020-12-23 13:46:45,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:46:45,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:45,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:46:45,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:46:45,115 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-23 13:46:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:45,151 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-12-23 13:46:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:46:45,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 13:46:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:45,153 INFO L225 Difference]: With dead ends: 63 [2020-12-23 13:46:45,153 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 13:46:45,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 13:46:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 13:46:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 13:46:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-12-23 13:46:45,161 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-12-23 13:46:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:45,161 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-12-23 13:46:45,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:46:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-12-23 13:46:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:46:45,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:45,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:45,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:46:45,163 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash 531180577, now seen corresponding path program 1 times [2020-12-23 13:46:45,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:45,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375312612] [2020-12-23 13:46:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:45,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375312612] [2020-12-23 13:46:45,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:45,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:45,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047444303] [2020-12-23 13:46:45,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:45,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:45,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:45,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:45,294 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-12-23 13:46:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:45,336 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-12-23 13:46:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:45,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:46:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:45,338 INFO L225 Difference]: With dead ends: 36 [2020-12-23 13:46:45,338 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 13:46:45,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:46:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 13:46:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 13:46:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 13:46:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-12-23 13:46:45,343 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-12-23 13:46:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:45,343 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-12-23 13:46:45,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-12-23 13:46:45,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:46:45,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:45,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:45,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:46:45,345 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2005536794, now seen corresponding path program 1 times [2020-12-23 13:46:45,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:45,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016076445] [2020-12-23 13:46:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:45,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016076445] [2020-12-23 13:46:45,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:45,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:45,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476599736] [2020-12-23 13:46:45,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:45,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:45,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:45,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:45,465 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-12-23 13:46:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:45,493 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-12-23 13:46:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:45,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:46:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:45,495 INFO L225 Difference]: With dead ends: 37 [2020-12-23 13:46:45,495 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 13:46:45,495 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 [2020-12-23 13:46:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 13:46:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 13:46:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 13:46:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-23 13:46:45,498 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-12-23 13:46:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:45,498 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-23 13:46:45,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-23 13:46:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:46:45,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:46:45,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:46:45,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:46:45,501 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:46:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:46:45,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1560668438, now seen corresponding path program 2 times [2020-12-23 13:46:45,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:46:45,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010176652] [2020-12-23 13:46:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:46:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:46:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:46:45,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010176652] [2020-12-23 13:46:45,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:46:45,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:46:45,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441357589] [2020-12-23 13:46:45,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:46:45,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:46:45,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:46:45,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:46:45,557 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-12-23 13:46:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:46:45,587 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-12-23 13:46:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:46:45,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:46:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:46:45,593 INFO L225 Difference]: With dead ends: 16 [2020-12-23 13:46:45,593 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:46:45,593 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 [2020-12-23 13:46:45,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:46:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:46:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:46:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:46:45,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-23 13:46:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:46:45,598 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:46:45,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:46:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:46:45,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:46:45,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:46:45,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:46:45 BasicIcfg [2020-12-23 13:46:45,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:46:45,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:46:45,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:46:45,605 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:46:45,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:46:41" (3/4) ... [2020-12-23 13:46:45,609 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:46:45,617 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:46:45,617 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:46:45,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-23 13:46:45,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:46:45,624 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:46:45,625 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:46:45,678 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe036_power.opt.i-witness.graphml [2020-12-23 13:46:45,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:46:45,680 INFO L168 Benchmark]: Toolchain (without parser) took 5958.26 ms. Allocated memory was 165.7 MB in the beginning and 202.4 MB in the end (delta: 36.7 MB). Free memory was 138.3 MB in the beginning and 144.9 MB in the end (delta: -6.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:45,680 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:46:45,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 926.11 ms. Allocated memory is still 165.7 MB. Free memory was 138.1 MB in the beginning and 142.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:45,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.96 ms. Allocated memory is still 165.7 MB. Free memory was 142.5 MB in the beginning and 140.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:45,683 INFO L168 Benchmark]: Boogie Preprocessor took 29.39 ms. Allocated memory is still 165.7 MB. Free memory was 140.9 MB in the beginning and 139.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:45,683 INFO L168 Benchmark]: RCFGBuilder took 560.57 ms. Allocated memory is still 165.7 MB. Free memory was 139.4 MB in the beginning and 119.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:45,684 INFO L168 Benchmark]: TraceAbstraction took 4298.93 ms. Allocated memory was 165.7 MB in the beginning and 202.4 MB in the end (delta: 36.7 MB). Free memory was 118.9 MB in the beginning and 147.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:45,685 INFO L168 Benchmark]: Witness Printer took 73.73 ms. Allocated memory is still 202.4 MB. Free memory was 147.6 MB in the beginning and 144.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:46:45,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 137.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 926.11 ms. Allocated memory is still 165.7 MB. Free memory was 138.1 MB in the beginning and 142.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.96 ms. Allocated memory is still 165.7 MB. Free memory was 142.5 MB in the beginning and 140.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.39 ms. Allocated memory is still 165.7 MB. Free memory was 140.9 MB in the beginning and 139.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 560.57 ms. Allocated memory is still 165.7 MB. Free memory was 139.4 MB in the beginning and 119.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4298.93 ms. Allocated memory was 165.7 MB in the beginning and 202.4 MB in the end (delta: 36.7 MB). Free memory was 118.9 MB in the beginning and 147.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. * Witness Printer took 73.73 ms. Allocated memory is still 202.4 MB. Free memory was 147.6 MB in the beginning and 144.9 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 465 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 47 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1354 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 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 63 SDtfs, 62 SDslu, 83 SDs, 0 SdLazy, 34 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...