/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/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:42:48,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:42:48,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:42:48,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:42:48,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:42:48,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:42:48,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:42:48,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:42:48,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:42:48,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:42:48,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:42:48,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:42:48,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:42:48,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:42:48,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:42:48,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:42:48,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:42:48,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:42:48,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:42:48,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:42:48,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:42:48,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:42:48,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:42:48,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:42:48,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:42:48,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:42:48,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:42:48,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:42:48,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:42:48,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:42:48,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:42:48,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:42:48,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:42:48,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:42:48,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:42:48,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:42:48,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:42:48,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:42:48,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:42:48,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:42:48,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:42:48,698 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 13:42:48,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:42:48,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:42:48,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:42:48,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:42:48,742 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:42:48,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:42:48,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:42:48,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:42:48,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:42:48,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:42:48,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:42:48,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:42:48,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:42:48,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:42:48,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:42:48,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:42:48,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:42:48,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:42:48,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:42:48,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:42:48,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:42:48,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:42:48,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:42:48,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:42:48,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:42:48,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:42:49,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:42:49,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:42:49,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:42:49,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:42:49,185 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:42:49,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-12-23 13:42:49,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f33ef723c/02fea0ec8142408b873cf50d4543456e/FLAGf56079f30 [2020-12-23 13:42:50,028 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:42:50,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-12-23 13:42:50,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f33ef723c/02fea0ec8142408b873cf50d4543456e/FLAGf56079f30 [2020-12-23 13:42:50,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f33ef723c/02fea0ec8142408b873cf50d4543456e [2020-12-23 13:42:50,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:42:50,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:42:50,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:50,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:42:50,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:42:50,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:50" (1/1) ... [2020-12-23 13:42:50,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b671e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:50, skipping insertion in model container [2020-12-23 13:42:50,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:50" (1/1) ... [2020-12-23 13:42:50,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:42:50,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:42:50,512 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/safe020_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[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:50,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:50,778 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:42:50,801 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:50,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:51,008 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:42:51,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51 WrapperNode [2020-12-23 13:42:51,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:51,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:51,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:42:51,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:42:51,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:51,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:42:51,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:42:51,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:42:51,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (1/1) ... [2020-12-23 13:42:51,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:42:51,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:42:51,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:42:51,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:42:51,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (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 13:42:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:42:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:42:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:42:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:42:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:42:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:42:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:42:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:42:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:42:51,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:42:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:42:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:42:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:42:51,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:42:51,248 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 13:42:51,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:42:51,875 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:42:51,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:51 BoogieIcfgContainer [2020-12-23 13:42:51,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:42:51,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:42:51,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:42:51,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:42:51,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:50" (1/3) ... [2020-12-23 13:42:51,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c13d7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:51, skipping insertion in model container [2020-12-23 13:42:51,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:51" (2/3) ... [2020-12-23 13:42:51,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c13d7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:51, skipping insertion in model container [2020-12-23 13:42:51,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:51" (3/3) ... [2020-12-23 13:42:51,890 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-12-23 13:42:51,901 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:42:51,902 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:42:51,908 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:42:51,909 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:42:51,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,961 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,961 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,962 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,962 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,965 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,966 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,967 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,977 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,977 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:51,994 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:42:52,017 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:42:52,051 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:42:52,051 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:42:52,051 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:42:52,051 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:42:52,052 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:42:52,052 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:42:52,052 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:42:52,052 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:42:52,071 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:42:52,074 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:42:52,077 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:42:52,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-23 13:42:52,127 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-23 13:42:52,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:42:52,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-23 13:42:52,135 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-23 13:42:55,459 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-23 13:42:55,799 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-23 13:42:56,072 INFO L131 LiptonReduction]: Checked pairs total: 2226 [2020-12-23 13:42:56,073 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-23 13:42:56,081 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-12-23 13:42:56,118 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-12-23 13:42:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-12-23 13:42:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:42:56,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:56,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:56,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -938351108, now seen corresponding path program 1 times [2020-12-23 13:42:56,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:56,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85952944] [2020-12-23 13:42:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:56,454 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 13:42:56,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85952944] [2020-12-23 13:42:56,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:56,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:42:56,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752024547] [2020-12-23 13:42:56,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:42:56,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:42:56,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:56,486 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-12-23 13:42:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:56,562 INFO L93 Difference]: Finished difference Result 316 states and 835 transitions. [2020-12-23 13:42:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:42:56,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 13:42:56,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:56,581 INFO L225 Difference]: With dead ends: 316 [2020-12-23 13:42:56,582 INFO L226 Difference]: Without dead ends: 205 [2020-12-23 13:42:56,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-12-23 13:42:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2020-12-23 13:42:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-23 13:42:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 485 transitions. [2020-12-23 13:42:56,672 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 485 transitions. Word has length 8 [2020-12-23 13:42:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:56,673 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 485 transitions. [2020-12-23 13:42:56,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:42:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 485 transitions. [2020-12-23 13:42:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:42:56,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:56,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:56,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:42:56,676 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:56,677 INFO L82 PathProgramCache]: Analyzing trace with hash 395784729, now seen corresponding path program 1 times [2020-12-23 13:42:56,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:56,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473372670] [2020-12-23 13:42:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:56,771 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 13:42:56,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473372670] [2020-12-23 13:42:56,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:56,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:56,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59369089] [2020-12-23 13:42:56,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:56,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:56,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:56,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:56,778 INFO L87 Difference]: Start difference. First operand 187 states and 485 transitions. Second operand 4 states. [2020-12-23 13:42:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:56,818 INFO L93 Difference]: Finished difference Result 196 states and 488 transitions. [2020-12-23 13:42:56,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:56,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:42:56,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:56,825 INFO L225 Difference]: With dead ends: 196 [2020-12-23 13:42:56,825 INFO L226 Difference]: Without dead ends: 196 [2020-12-23 13:42:56,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:56,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-23 13:42:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2020-12-23 13:42:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 13:42:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 455 transitions. [2020-12-23 13:42:56,864 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 455 transitions. Word has length 9 [2020-12-23 13:42:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:56,864 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 455 transitions. [2020-12-23 13:42:56,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 455 transitions. [2020-12-23 13:42:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:42:56,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:56,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:56,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:42:56,867 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash 975885903, now seen corresponding path program 1 times [2020-12-23 13:42:56,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:56,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039791092] [2020-12-23 13:42:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:56,941 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 13:42:56,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039791092] [2020-12-23 13:42:56,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:56,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:56,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336125856] [2020-12-23 13:42:56,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:56,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:56,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:56,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:56,944 INFO L87 Difference]: Start difference. First operand 178 states and 455 transitions. Second operand 4 states. [2020-12-23 13:42:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:56,969 INFO L93 Difference]: Finished difference Result 187 states and 464 transitions. [2020-12-23 13:42:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:56,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:42:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:56,972 INFO L225 Difference]: With dead ends: 187 [2020-12-23 13:42:56,972 INFO L226 Difference]: Without dead ends: 187 [2020-12-23 13:42:56,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-23 13:42:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-12-23 13:42:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-23 13:42:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 431 transitions. [2020-12-23 13:42:56,987 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 431 transitions. Word has length 9 [2020-12-23 13:42:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:56,988 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 431 transitions. [2020-12-23 13:42:56,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 431 transitions. [2020-12-23 13:42:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:56,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:56,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:56,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:42:56,990 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:56,991 INFO L82 PathProgramCache]: Analyzing trace with hash -615576110, now seen corresponding path program 1 times [2020-12-23 13:42:56,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:56,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322814312] [2020-12-23 13:42:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:57,074 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 13:42:57,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322814312] [2020-12-23 13:42:57,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:57,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:57,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657005103] [2020-12-23 13:42:57,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:57,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:57,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:57,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:57,079 INFO L87 Difference]: Start difference. First operand 169 states and 431 transitions. Second operand 4 states. [2020-12-23 13:42:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:57,132 INFO L93 Difference]: Finished difference Result 209 states and 515 transitions. [2020-12-23 13:42:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:57,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 13:42:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:57,135 INFO L225 Difference]: With dead ends: 209 [2020-12-23 13:42:57,135 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 13:42:57,136 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 [2020-12-23 13:42:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 13:42:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2020-12-23 13:42:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-23 13:42:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 446 transitions. [2020-12-23 13:42:57,149 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 446 transitions. Word has length 10 [2020-12-23 13:42:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:57,149 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 446 transitions. [2020-12-23 13:42:57,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 446 transitions. [2020-12-23 13:42:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:57,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:57,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:57,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:42:57,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:57,153 INFO L82 PathProgramCache]: Analyzing trace with hash 187690604, now seen corresponding path program 2 times [2020-12-23 13:42:57,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:57,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374576949] [2020-12-23 13:42:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:42:57,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374576949] [2020-12-23 13:42:57,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:57,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:57,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143026211] [2020-12-23 13:42:57,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:57,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:57,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:57,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:57,223 INFO L87 Difference]: Start difference. First operand 175 states and 446 transitions. Second operand 5 states. [2020-12-23 13:42:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:57,258 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2020-12-23 13:42:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:57,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:42:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:57,260 INFO L225 Difference]: With dead ends: 234 [2020-12-23 13:42:57,260 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 13:42:57,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:57,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 13:42:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2020-12-23 13:42:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 13:42:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 315 transitions. [2020-12-23 13:42:57,268 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 315 transitions. Word has length 10 [2020-12-23 13:42:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:57,269 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 315 transitions. [2020-12-23 13:42:57,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 315 transitions. [2020-12-23 13:42:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:57,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:57,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:57,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:42:57,271 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1342775669, now seen corresponding path program 1 times [2020-12-23 13:42:57,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:57,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315594769] [2020-12-23 13:42:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:57,390 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 13:42:57,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315594769] [2020-12-23 13:42:57,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:57,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:57,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956043039] [2020-12-23 13:42:57,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:57,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:57,393 INFO L87 Difference]: Start difference. First operand 132 states and 315 transitions. Second operand 4 states. [2020-12-23 13:42:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:57,441 INFO L93 Difference]: Finished difference Result 155 states and 339 transitions. [2020-12-23 13:42:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:57,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:42:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:57,443 INFO L225 Difference]: With dead ends: 155 [2020-12-23 13:42:57,443 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 13:42:57,444 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 [2020-12-23 13:42:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 13:42:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-23 13:42:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-23 13:42:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 251 transitions. [2020-12-23 13:42:57,449 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 251 transitions. Word has length 11 [2020-12-23 13:42:57,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:57,450 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 251 transitions. [2020-12-23 13:42:57,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 251 transitions. [2020-12-23 13:42:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:42:57,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:57,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:57,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:42:57,452 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:57,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1283997363, now seen corresponding path program 1 times [2020-12-23 13:42:57,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:57,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449960261] [2020-12-23 13:42:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:57,513 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 13:42:57,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449960261] [2020-12-23 13:42:57,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:57,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:57,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657969812] [2020-12-23 13:42:57,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:57,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:57,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:57,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:57,516 INFO L87 Difference]: Start difference. First operand 115 states and 251 transitions. Second operand 5 states. [2020-12-23 13:42:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:57,570 INFO L93 Difference]: Finished difference Result 116 states and 234 transitions. [2020-12-23 13:42:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:57,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:42:57,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:57,572 INFO L225 Difference]: With dead ends: 116 [2020-12-23 13:42:57,572 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 13:42:57,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 13:42:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-23 13:42:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-23 13:42:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 176 transitions. [2020-12-23 13:42:57,577 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 176 transitions. Word has length 12 [2020-12-23 13:42:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:57,578 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 176 transitions. [2020-12-23 13:42:57,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:57,578 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 176 transitions. [2020-12-23 13:42:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:42:57,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:57,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:57,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:42:57,579 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:57,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1633997476, now seen corresponding path program 1 times [2020-12-23 13:42:57,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:57,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464110409] [2020-12-23 13:42:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:57,646 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 13:42:57,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464110409] [2020-12-23 13:42:57,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:57,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:57,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560604858] [2020-12-23 13:42:57,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:42:57,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:57,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:42:57,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:57,649 INFO L87 Difference]: Start difference. First operand 89 states and 176 transitions. Second operand 6 states. [2020-12-23 13:42:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:57,698 INFO L93 Difference]: Finished difference Result 85 states and 166 transitions. [2020-12-23 13:42:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:42:57,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 13:42:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:57,700 INFO L225 Difference]: With dead ends: 85 [2020-12-23 13:42:57,700 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 13:42:57,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:42:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 13:42:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-12-23 13:42:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 13:42:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 83 transitions. [2020-12-23 13:42:57,703 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 83 transitions. Word has length 14 [2020-12-23 13:42:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:57,703 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 83 transitions. [2020-12-23 13:42:57,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:42:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 83 transitions. [2020-12-23 13:42:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:42:57,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:57,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:57,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:42:57,705 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:57,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:57,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1390745954, now seen corresponding path program 1 times [2020-12-23 13:42:57,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:57,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621985370] [2020-12-23 13:42:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:57,782 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 13:42:57,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621985370] [2020-12-23 13:42:57,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:57,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:57,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70661625] [2020-12-23 13:42:57,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:42:57,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:57,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:42:57,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:57,785 INFO L87 Difference]: Start difference. First operand 46 states and 83 transitions. Second operand 3 states. [2020-12-23 13:42:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:57,793 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-12-23 13:42:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:42:57,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 13:42:57,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:57,795 INFO L225 Difference]: With dead ends: 59 [2020-12-23 13:42:57,795 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 13:42:57,795 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 [2020-12-23 13:42:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 13:42:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-23 13:42:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 13:42:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-12-23 13:42:57,798 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 16 [2020-12-23 13:42:57,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:57,798 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-12-23 13:42:57,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:42:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-12-23 13:42:57,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:42:57,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:57,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:57,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:42:57,800 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1414383408, now seen corresponding path program 2 times [2020-12-23 13:42:57,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:57,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644414010] [2020-12-23 13:42:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:57,849 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 13:42:57,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644414010] [2020-12-23 13:42:57,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:57,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:57,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371003277] [2020-12-23 13:42:57,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:57,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:57,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:57,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:57,852 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-12-23 13:42:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:57,865 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-12-23 13:42:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:57,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 13:42:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:57,866 INFO L225 Difference]: With dead ends: 32 [2020-12-23 13:42:57,866 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:42:57,867 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 13:42:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:42:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:42:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:42:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:42:57,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 13:42:57,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:57,868 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:42:57,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:42:57,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:42:57,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:42:57,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:57 BasicIcfg [2020-12-23 13:42:57,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:42:57,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:42:57,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:42:57,875 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:42:57,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:51" (3/4) ... [2020-12-23 13:42:57,881 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:42:57,890 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:42:57,890 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:42:57,890 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:42:57,898 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:42:57,899 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:42:57,899 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:57,900 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:57,958 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe020_pso.oepc.i-witness.graphml [2020-12-23 13:42:57,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:42:57,961 INFO L168 Benchmark]: Toolchain (without parser) took 7697.87 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 127.2 MB in the beginning and 183.0 MB in the end (delta: -55.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:57,964 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 153.1 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:57,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.92 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 95.7 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:57,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.68 ms. Allocated memory is still 153.1 MB. Free memory was 95.7 MB in the beginning and 93.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:57,970 INFO L168 Benchmark]: Boogie Preprocessor took 43.81 ms. Allocated memory is still 153.1 MB. Free memory was 93.6 MB in the beginning and 92.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:57,970 INFO L168 Benchmark]: RCFGBuilder took 766.88 ms. Allocated memory is still 153.1 MB. Free memory was 92.4 MB in the beginning and 124.2 MB in the end (delta: -31.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:57,974 INFO L168 Benchmark]: TraceAbstraction took 5992.69 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 124.2 MB in the beginning and 185.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:57,974 INFO L168 Benchmark]: Witness Printer took 83.74 ms. Allocated memory is still 222.3 MB. Free memory was 185.7 MB in the beginning and 183.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:57,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 153.1 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 741.92 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 95.7 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.68 ms. Allocated memory is still 153.1 MB. Free memory was 95.7 MB in the beginning and 93.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.81 ms. Allocated memory is still 153.1 MB. Free memory was 93.6 MB in the beginning and 92.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 766.88 ms. Allocated memory is still 153.1 MB. Free memory was 92.4 MB in the beginning and 124.2 MB in the end (delta: -31.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5992.69 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 124.2 MB in the beginning and 185.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * Witness Printer took 83.74 ms. Allocated memory is still 222.3 MB. Free memory was 185.7 MB in the beginning and 183.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 727 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2226 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 166 SDtfs, 180 SDslu, 215 SDs, 0 SdLazy, 126 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...