/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/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:39:32,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:39:32,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:39:32,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:39:32,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:39:32,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:39:32,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:39:32,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:39:32,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:39:32,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:39:32,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:39:32,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:39:32,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:39:32,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:39:32,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:39:32,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:39:32,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:39:32,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:39:32,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:39:32,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:39:32,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:39:32,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:39:32,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:39:32,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:39:32,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:39:32,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:39:32,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:39:32,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:39:32,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:39:32,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:39:32,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:39:32,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:39:32,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:39:32,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:39:32,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:39:32,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:39:32,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:39:32,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:39:32,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:39:32,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:39:32,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:39:32,729 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 13:39:32,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:39:32,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:39:32,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:39:32,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:39:32,788 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:39:32,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:39:32,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:39:32,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:39:32,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:39:32,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:39:32,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:39:32,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:39:32,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:39:32,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:39:32,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:39:32,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:39:32,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:39:32,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:39:32,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:39:32,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:39:32,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:39:32,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:39:32,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:39:32,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:39:32,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:39:32,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:39:33,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:39:33,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:39:33,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:39:33,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:39:33,265 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:39:33,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2020-12-23 13:39:33,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2cab76495/9dbe14a444fc480db8990542e9bbf0e0/FLAG6df9135b6 [2020-12-23 13:39:34,156 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:39:34,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i [2020-12-23 13:39:34,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2cab76495/9dbe14a444fc480db8990542e9bbf0e0/FLAG6df9135b6 [2020-12-23 13:39:34,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2cab76495/9dbe14a444fc480db8990542e9bbf0e0 [2020-12-23 13:39:34,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:39:34,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:39:34,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:34,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:39:34,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:39:34,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:34" (1/1) ... [2020-12-23 13:39:34,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d126f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:34, skipping insertion in model container [2020-12-23 13:39:34,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:34" (1/1) ... [2020-12-23 13:39:34,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:39:34,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:39:34,658 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/safe008_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~z~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_p1_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[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~z~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:34,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:34,898 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:39:34,913 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:34,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:35,087 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:39:35,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35 WrapperNode [2020-12-23 13:39:35,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:35,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:35,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:39:35,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:39:35,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:35,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:39:35,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:39:35,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:39:35,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (1/1) ... [2020-12-23 13:39:35,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:39:35,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:39:35,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:39:35,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:39:35,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (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 13:39:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:39:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:39:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:39:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:39:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:39:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:39:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:39:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:39:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:39:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:39:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:39:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:39:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:39:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:39:35,290 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 13:39:35,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:39:35,829 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:39:35,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:35 BoogieIcfgContainer [2020-12-23 13:39:35,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:39:35,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:39:35,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:39:35,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:39:35,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:39:34" (1/3) ... [2020-12-23 13:39:35,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cda8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:35, skipping insertion in model container [2020-12-23 13:39:35,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:35" (2/3) ... [2020-12-23 13:39:35,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cda8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:35, skipping insertion in model container [2020-12-23 13:39:35,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:35" (3/3) ... [2020-12-23 13:39:35,844 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-12-23 13:39:35,854 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:39:35,854 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:39:35,859 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:39:35,860 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:39:35,911 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,911 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,912 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,912 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,913 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,913 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,915 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,915 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,916 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,916 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,916 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,916 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,920 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,920 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,923 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,923 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,927 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,928 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,929 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,935 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,936 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,936 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,944 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,945 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:35,949 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:39:35,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:39:35,991 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:39:35,991 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:39:35,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:39:35,992 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:39:35,992 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:39:35,992 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:39:35,992 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:39:35,992 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:39:36,007 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:39:36,009 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:39:36,012 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:39:36,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:39:36,057 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:39:36,058 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:39:36,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:39:36,071 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:39:38,901 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:39:39,231 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:39:39,335 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:39:39,340 INFO L131 LiptonReduction]: Checked pairs total: 2563 [2020-12-23 13:39:39,340 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:39:39,347 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-23 13:39:39,379 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-23 13:39:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-23 13:39:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:39:39,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:39,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:39,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857802, now seen corresponding path program 1 times [2020-12-23 13:39:39,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:39,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345022578] [2020-12-23 13:39:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:39,609 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 13:39:39,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345022578] [2020-12-23 13:39:39,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:39,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:39,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148434862] [2020-12-23 13:39:39,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:39:39,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:39:39,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:39:39,644 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-23 13:39:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:39,700 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-23 13:39:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:39:39,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:39:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:39,732 INFO L225 Difference]: With dead ends: 362 [2020-12-23 13:39:39,733 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 13:39:39,734 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 13:39:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 13:39:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-23 13:39:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-23 13:39:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-23 13:39:39,809 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-23 13:39:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:39,810 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-23 13:39:39,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:39:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-23 13:39:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:39:39,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:39,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:39,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:39:39,813 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1183024898, now seen corresponding path program 1 times [2020-12-23 13:39:39,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:39,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609102390] [2020-12-23 13:39:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:39,996 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 13:39:39,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609102390] [2020-12-23 13:39:39,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:39,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:39,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258439768] [2020-12-23 13:39:39,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:40,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:40,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:40,001 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-23 13:39:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:40,080 INFO L93 Difference]: Finished difference Result 510 states and 1386 transitions. [2020-12-23 13:39:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:40,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:39:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:40,090 INFO L225 Difference]: With dead ends: 510 [2020-12-23 13:39:40,091 INFO L226 Difference]: Without dead ends: 380 [2020-12-23 13:39:40,092 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 13:39:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-12-23 13:39:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 320. [2020-12-23 13:39:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-12-23 13:39:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 900 transitions. [2020-12-23 13:39:40,156 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 900 transitions. Word has length 9 [2020-12-23 13:39:40,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:40,156 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 900 transitions. [2020-12-23 13:39:40,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 900 transitions. [2020-12-23 13:39:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:39:40,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:40,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:40,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:39:40,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash 995647992, now seen corresponding path program 1 times [2020-12-23 13:39:40,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:40,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554011396] [2020-12-23 13:39:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:40,337 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 13:39:40,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554011396] [2020-12-23 13:39:40,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:40,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:40,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38395643] [2020-12-23 13:39:40,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:40,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:40,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:40,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:40,344 INFO L87 Difference]: Start difference. First operand 320 states and 900 transitions. Second operand 5 states. [2020-12-23 13:39:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:40,426 INFO L93 Difference]: Finished difference Result 428 states and 1125 transitions. [2020-12-23 13:39:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:40,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:39:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:40,432 INFO L225 Difference]: With dead ends: 428 [2020-12-23 13:39:40,433 INFO L226 Difference]: Without dead ends: 350 [2020-12-23 13:39:40,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 13:39:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-12-23 13:39:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 290. [2020-12-23 13:39:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-23 13:39:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 796 transitions. [2020-12-23 13:39:40,457 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 796 transitions. Word has length 10 [2020-12-23 13:39:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:40,458 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 796 transitions. [2020-12-23 13:39:40,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 796 transitions. [2020-12-23 13:39:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:39:40,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:40,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:40,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:39:40,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:40,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1980956361, now seen corresponding path program 1 times [2020-12-23 13:39:40,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:40,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300855253] [2020-12-23 13:39:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:40,605 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 13:39:40,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300855253] [2020-12-23 13:39:40,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:40,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:40,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174203113] [2020-12-23 13:39:40,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:40,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:40,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:40,610 INFO L87 Difference]: Start difference. First operand 290 states and 796 transitions. Second operand 5 states. [2020-12-23 13:39:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:40,684 INFO L93 Difference]: Finished difference Result 404 states and 1037 transitions. [2020-12-23 13:39:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:40,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:39:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:40,688 INFO L225 Difference]: With dead ends: 404 [2020-12-23 13:39:40,688 INFO L226 Difference]: Without dead ends: 326 [2020-12-23 13:39:40,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 13:39:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-23 13:39:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2020-12-23 13:39:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-23 13:39:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 754 transitions. [2020-12-23 13:39:40,701 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 754 transitions. Word has length 10 [2020-12-23 13:39:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:40,702 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 754 transitions. [2020-12-23 13:39:40,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 754 transitions. [2020-12-23 13:39:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:39:40,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:40,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:40,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:39:40,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:40,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash 800294145, now seen corresponding path program 1 times [2020-12-23 13:39:40,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:40,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489804002] [2020-12-23 13:39:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:40,824 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 13:39:40,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489804002] [2020-12-23 13:39:40,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:40,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:40,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649830449] [2020-12-23 13:39:40,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:40,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:40,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:40,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:40,829 INFO L87 Difference]: Start difference. First operand 278 states and 754 transitions. Second operand 5 states. [2020-12-23 13:39:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:40,925 INFO L93 Difference]: Finished difference Result 419 states and 1082 transitions. [2020-12-23 13:39:40,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 13:39:40,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:39:40,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:40,928 INFO L225 Difference]: With dead ends: 419 [2020-12-23 13:39:40,929 INFO L226 Difference]: Without dead ends: 338 [2020-12-23 13:39:40,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:39:40,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-23 13:39:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 284. [2020-12-23 13:39:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-23 13:39:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 767 transitions. [2020-12-23 13:39:40,941 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 767 transitions. Word has length 11 [2020-12-23 13:39:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:40,942 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 767 transitions. [2020-12-23 13:39:40,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 767 transitions. [2020-12-23 13:39:40,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:39:40,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:40,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:40,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:39:40,943 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1280130465, now seen corresponding path program 2 times [2020-12-23 13:39:40,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:40,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631989672] [2020-12-23 13:39:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:41,003 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 13:39:41,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631989672] [2020-12-23 13:39:41,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:41,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:41,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297060667] [2020-12-23 13:39:41,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:39:41,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:41,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:39:41,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:39:41,006 INFO L87 Difference]: Start difference. First operand 284 states and 767 transitions. Second operand 6 states. [2020-12-23 13:39:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:41,060 INFO L93 Difference]: Finished difference Result 350 states and 895 transitions. [2020-12-23 13:39:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:41,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 13:39:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:41,063 INFO L225 Difference]: With dead ends: 350 [2020-12-23 13:39:41,063 INFO L226 Difference]: Without dead ends: 182 [2020-12-23 13:39:41,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:39:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-23 13:39:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 158. [2020-12-23 13:39:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-23 13:39:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 382 transitions. [2020-12-23 13:39:41,070 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 382 transitions. Word has length 11 [2020-12-23 13:39:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:41,070 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 382 transitions. [2020-12-23 13:39:41,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:39:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 382 transitions. [2020-12-23 13:39:41,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:39:41,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:41,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:41,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:39:41,071 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:41,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1283691266, now seen corresponding path program 1 times [2020-12-23 13:39:41,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:41,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370118610] [2020-12-23 13:39:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:41,121 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 13:39:41,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370118610] [2020-12-23 13:39:41,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:41,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:41,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966821359] [2020-12-23 13:39:41,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:41,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:41,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:41,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:41,124 INFO L87 Difference]: Start difference. First operand 158 states and 382 transitions. Second operand 5 states. [2020-12-23 13:39:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:41,192 INFO L93 Difference]: Finished difference Result 196 states and 453 transitions. [2020-12-23 13:39:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:41,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:39:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:41,194 INFO L225 Difference]: With dead ends: 196 [2020-12-23 13:39:41,194 INFO L226 Difference]: Without dead ends: 82 [2020-12-23 13:39:41,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:39:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-23 13:39:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-23 13:39:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-23 13:39:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 170 transitions. [2020-12-23 13:39:41,199 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 170 transitions. Word has length 13 [2020-12-23 13:39:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:41,200 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 170 transitions. [2020-12-23 13:39:41,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 170 transitions. [2020-12-23 13:39:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:39:41,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:41,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:41,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:39:41,201 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:41,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1802492984, now seen corresponding path program 1 times [2020-12-23 13:39:41,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:41,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359432363] [2020-12-23 13:39:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:41,253 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 13:39:41,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359432363] [2020-12-23 13:39:41,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:41,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:41,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696618697] [2020-12-23 13:39:41,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:41,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:41,256 INFO L87 Difference]: Start difference. First operand 82 states and 170 transitions. Second operand 4 states. [2020-12-23 13:39:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:41,283 INFO L93 Difference]: Finished difference Result 84 states and 159 transitions. [2020-12-23 13:39:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:41,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 13:39:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:41,285 INFO L225 Difference]: With dead ends: 84 [2020-12-23 13:39:41,285 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 13:39:41,286 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 13:39:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 13:39:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-23 13:39:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 13:39:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2020-12-23 13:39:41,289 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 14 [2020-12-23 13:39:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:41,290 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2020-12-23 13:39:41,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2020-12-23 13:39:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:39:41,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:41,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:41,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:39:41,291 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:41,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1849440776, now seen corresponding path program 1 times [2020-12-23 13:39:41,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:41,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710312756] [2020-12-23 13:39:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:41,349 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 13:39:41,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710312756] [2020-12-23 13:39:41,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:41,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:41,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568898835] [2020-12-23 13:39:41,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:41,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:41,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:41,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:41,352 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand 5 states. [2020-12-23 13:39:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:41,390 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-12-23 13:39:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:41,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 13:39:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:41,391 INFO L225 Difference]: With dead ends: 60 [2020-12-23 13:39:41,391 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 13:39:41,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 13:39:41,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 13:39:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-23 13:39:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 13:39:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-12-23 13:39:41,394 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 15 [2020-12-23 13:39:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:41,395 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-12-23 13:39:41,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-12-23 13:39:41,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:39:41,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:41,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:41,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:39:41,396 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1050921859, now seen corresponding path program 1 times [2020-12-23 13:39:41,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:41,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484437771] [2020-12-23 13:39:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:41,454 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 13:39:41,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484437771] [2020-12-23 13:39:41,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:41,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:39:41,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461753438] [2020-12-23 13:39:41,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:39:41,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:39:41,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:39:41,456 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 6 states. [2020-12-23 13:39:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:41,487 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2020-12-23 13:39:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:41,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 13:39:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:41,488 INFO L225 Difference]: With dead ends: 46 [2020-12-23 13:39:41,488 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:39:41,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 13:39:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:39:41,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:39:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:39:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:39:41,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 13:39:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:41,489 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:39:41,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:39:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:39:41,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:39:41,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:39:41,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:39:41 BasicIcfg [2020-12-23 13:39:41,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:39:41,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:39:41,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:39:41,495 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:39:41,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:35" (3/4) ... [2020-12-23 13:39:41,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:39:41,508 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:39:41,508 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:39:41,508 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:39:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:39:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:39:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:41,514 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:41,560 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe008_tso.oepc.i-witness.graphml [2020-12-23 13:39:41,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:39:41,562 INFO L168 Benchmark]: Toolchain (without parser) took 7198.14 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 125.3 MB in the beginning and 158.3 MB in the end (delta: -33.0 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:41,562 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:39:41,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 126.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:41,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 124.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:41,568 INFO L168 Benchmark]: Boogie Preprocessor took 27.05 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 123.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:41,568 INFO L168 Benchmark]: RCFGBuilder took 666.02 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 100.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:41,569 INFO L168 Benchmark]: TraceAbstraction took 5660.40 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 100.7 MB in the beginning and 160.9 MB in the end (delta: -60.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:41,570 INFO L168 Benchmark]: Witness Printer took 65.81 ms. Allocated memory is still 230.7 MB. Free memory was 160.9 MB in the beginning and 158.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:41,573 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 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 719.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 126.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 124.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.05 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 123.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 666.02 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 100.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5660.40 ms. Allocated memory was 151.0 MB in the beginning and 230.7 MB in the end (delta: 79.7 MB). Free memory was 100.7 MB in the beginning and 160.9 MB in the end (delta: -60.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * Witness Printer took 65.81 ms. Allocated memory is still 230.7 MB. Free memory was 160.9 MB in the beginning and 158.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 768 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2563 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 235 SDtfs, 269 SDslu, 400 SDs, 0 SdLazy, 135 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 246 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 5519 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...