/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/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:42:40,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:42:40,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:42:40,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:42:40,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:42:40,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:42:40,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:42:40,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:42:40,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:42:40,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:42:40,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:42:40,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:42:40,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:42:40,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:42:40,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:42:40,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:42:40,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:42:40,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:42:40,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:42:40,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:42:40,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:42:40,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:42:40,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:42:40,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:42:40,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:42:40,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:42:40,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:42:40,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:42:40,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:42:40,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:42:40,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:42:40,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:42:40,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:42:40,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:42:40,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:42:40,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:42:40,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:42:40,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:42:40,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:42:40,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:42:40,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:42:40,578 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 13:42:40,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:42:40,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:42:40,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:42:40,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:42:40,636 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:42:40,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:42:40,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:42:40,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:42:40,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:42:40,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:42:40,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:42:40,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:42:40,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:42:40,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:42:40,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:42:40,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:42:40,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:42:40,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:42:40,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:42:40,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:42:40,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:42:40,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:42:40,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:42:40,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:42:40,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:42:40,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:42:41,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:42:41,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:42:41,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:42:41,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:42:41,177 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:42:41,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i [2020-12-23 13:42:41,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/859f14337/4b3fb0694ece4a3b840f5b77e3669f8d/FLAG6cd85192d [2020-12-23 13:42:41,974 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:42:41,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i [2020-12-23 13:42:42,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/859f14337/4b3fb0694ece4a3b840f5b77e3669f8d/FLAG6cd85192d [2020-12-23 13:42:42,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/859f14337/4b3fb0694ece4a3b840f5b77e3669f8d [2020-12-23 13:42:42,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:42:42,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:42:42,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:42,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:42:42,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:42:42,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:42" (1/1) ... [2020-12-23 13:42:42,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4effdf3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:42, skipping insertion in model container [2020-12-23 13:42:42,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:42" (1/1) ... [2020-12-23 13:42:42,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:42:42,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:42:42,544 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/safe019_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~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[~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:42,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:42,850 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:42:42,863 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:42:42,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:42:43,013 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:42:43,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43 WrapperNode [2020-12-23 13:42:43,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:42:43,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:43,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:42:43,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:42:43,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:42:43,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:42:43,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:42:43,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:42:43,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (1/1) ... [2020-12-23 13:42:43,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:42:43,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:42:43,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:42:43,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:42:43,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (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 13:42:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:42:43,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:42:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:42:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:42:43,311 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:42:43,311 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:42:43,312 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:42:43,312 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:42:43,313 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:42:43,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:42:43,314 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-23 13:42:43,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-23 13:42:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:42:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:42:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:42:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:42:43,318 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 13:42:43,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:42:43,783 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:42:43,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:43 BoogieIcfgContainer [2020-12-23 13:42:43,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:42:43,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:42:43,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:42:43,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:42:43,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:42" (1/3) ... [2020-12-23 13:42:43,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299177d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:43, skipping insertion in model container [2020-12-23 13:42:43,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:43" (2/3) ... [2020-12-23 13:42:43,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299177d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:43, skipping insertion in model container [2020-12-23 13:42:43,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:43" (3/3) ... [2020-12-23 13:42:43,795 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2020-12-23 13:42:43,802 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:42:43,802 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:42:43,807 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:42:43,809 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:42:43,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,846 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,846 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,846 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,852 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,852 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,852 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,853 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,853 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,853 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,853 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,853 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,853 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,854 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,854 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,854 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,855 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,855 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,858 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,864 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,864 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,864 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,864 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,869 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:42:43,876 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:42:43,896 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 13:42:43,921 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:42:43,921 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:42:43,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:42:43,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:42:43,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:42:43,922 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:42:43,922 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:42:43,922 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:42:43,937 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:42:43,940 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-23 13:42:43,943 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-23 13:42:43,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-12-23 13:42:44,007 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-12-23 13:42:44,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:42:44,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-23 13:42:44,028 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-23 13:42:47,587 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:42:47,715 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:42:47,938 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:42:48,048 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:42:48,372 INFO L131 LiptonReduction]: Checked pairs total: 2978 [2020-12-23 13:42:48,373 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-23 13:42:48,381 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-23 13:42:48,467 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-23 13:42:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-23 13:42:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:42:48,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:48,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:48,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:48,488 INFO L82 PathProgramCache]: Analyzing trace with hash -36259415, now seen corresponding path program 1 times [2020-12-23 13:42:48,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:48,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475191930] [2020-12-23 13:42:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:48,916 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 13:42:48,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475191930] [2020-12-23 13:42:48,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:48,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:42:48,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124703276] [2020-12-23 13:42:48,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:42:48,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:48,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:42:48,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:42:48,943 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-23 13:42:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:49,037 INFO L93 Difference]: Finished difference Result 1072 states and 3535 transitions. [2020-12-23 13:42:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:42:49,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:42:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:49,085 INFO L225 Difference]: With dead ends: 1072 [2020-12-23 13:42:49,085 INFO L226 Difference]: Without dead ends: 745 [2020-12-23 13:42:49,089 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 13:42:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-23 13:42:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 679. [2020-12-23 13:42:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-12-23 13:42:49,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2220 transitions. [2020-12-23 13:42:49,236 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2220 transitions. Word has length 10 [2020-12-23 13:42:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:49,238 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 2220 transitions. [2020-12-23 13:42:49,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:42:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2220 transitions. [2020-12-23 13:42:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:49,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:49,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:49,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:42:49,244 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:49,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1165014530, now seen corresponding path program 1 times [2020-12-23 13:42:49,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:49,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001040506] [2020-12-23 13:42:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:49,406 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 13:42:49,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001040506] [2020-12-23 13:42:49,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:49,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:49,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322957400] [2020-12-23 13:42:49,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:49,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:49,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:49,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:49,410 INFO L87 Difference]: Start difference. First operand 679 states and 2220 transitions. Second operand 4 states. [2020-12-23 13:42:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:49,447 INFO L93 Difference]: Finished difference Result 700 states and 2225 transitions. [2020-12-23 13:42:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:49,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:42:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:49,455 INFO L225 Difference]: With dead ends: 700 [2020-12-23 13:42:49,455 INFO L226 Difference]: Without dead ends: 700 [2020-12-23 13:42:49,456 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 13:42:49,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-12-23 13:42:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 652. [2020-12-23 13:42:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-12-23 13:42:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2109 transitions. [2020-12-23 13:42:49,493 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2109 transitions. Word has length 11 [2020-12-23 13:42:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:49,493 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 2109 transitions. [2020-12-23 13:42:49,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2109 transitions. [2020-12-23 13:42:49,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:42:49,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:49,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:49,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:42:49,496 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:49,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1124043458, now seen corresponding path program 1 times [2020-12-23 13:42:49,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:49,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208429711] [2020-12-23 13:42:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:49,556 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 13:42:49,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208429711] [2020-12-23 13:42:49,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:49,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:49,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433158498] [2020-12-23 13:42:49,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:49,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:49,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:49,559 INFO L87 Difference]: Start difference. First operand 652 states and 2109 transitions. Second operand 4 states. [2020-12-23 13:42:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:49,588 INFO L93 Difference]: Finished difference Result 664 states and 2099 transitions. [2020-12-23 13:42:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:49,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:42:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:49,595 INFO L225 Difference]: With dead ends: 664 [2020-12-23 13:42:49,596 INFO L226 Difference]: Without dead ends: 664 [2020-12-23 13:42:49,596 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 13:42:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-12-23 13:42:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 604. [2020-12-23 13:42:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-12-23 13:42:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1939 transitions. [2020-12-23 13:42:49,626 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1939 transitions. Word has length 11 [2020-12-23 13:42:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:49,626 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 1939 transitions. [2020-12-23 13:42:49,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1939 transitions. [2020-12-23 13:42:49,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:42:49,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:49,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:49,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:42:49,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:49,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:49,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1755710469, now seen corresponding path program 1 times [2020-12-23 13:42:49,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:49,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117709605] [2020-12-23 13:42:49,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:49,689 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 13:42:49,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117709605] [2020-12-23 13:42:49,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:49,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:49,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138438806] [2020-12-23 13:42:49,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:49,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:49,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:49,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:49,694 INFO L87 Difference]: Start difference. First operand 604 states and 1939 transitions. Second operand 5 states. [2020-12-23 13:42:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:49,736 INFO L93 Difference]: Finished difference Result 856 states and 2659 transitions. [2020-12-23 13:42:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:49,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:42:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:49,742 INFO L225 Difference]: With dead ends: 856 [2020-12-23 13:42:49,742 INFO L226 Difference]: Without dead ends: 472 [2020-12-23 13:42:49,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-12-23 13:42:49,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 436. [2020-12-23 13:42:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-12-23 13:42:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1375 transitions. [2020-12-23 13:42:49,764 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1375 transitions. Word has length 12 [2020-12-23 13:42:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:49,764 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 1375 transitions. [2020-12-23 13:42:49,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1375 transitions. [2020-12-23 13:42:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:42:49,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:49,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:49,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:42:49,766 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:49,766 INFO L82 PathProgramCache]: Analyzing trace with hash -485610361, now seen corresponding path program 2 times [2020-12-23 13:42:49,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:49,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110293810] [2020-12-23 13:42:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:49,820 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 13:42:49,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110293810] [2020-12-23 13:42:49,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:49,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:49,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654125096] [2020-12-23 13:42:49,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:49,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:49,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:49,823 INFO L87 Difference]: Start difference. First operand 436 states and 1375 transitions. Second operand 4 states. [2020-12-23 13:42:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:49,849 INFO L93 Difference]: Finished difference Result 478 states and 1466 transitions. [2020-12-23 13:42:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:49,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 13:42:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:49,854 INFO L225 Difference]: With dead ends: 478 [2020-12-23 13:42:49,855 INFO L226 Difference]: Without dead ends: 478 [2020-12-23 13:42:49,855 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 13:42:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-12-23 13:42:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 418. [2020-12-23 13:42:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-23 13:42:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2020-12-23 13:42:49,875 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 12 [2020-12-23 13:42:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:49,876 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2020-12-23 13:42:49,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2020-12-23 13:42:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:42:49,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:49,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:49,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:42:49,878 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:49,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:49,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1949399229, now seen corresponding path program 1 times [2020-12-23 13:42:49,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:49,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782014649] [2020-12-23 13:42:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:49,946 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 13:42:49,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782014649] [2020-12-23 13:42:49,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:49,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:49,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719509802] [2020-12-23 13:42:49,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:49,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:49,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:49,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:49,950 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand 4 states. [2020-12-23 13:42:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:49,983 INFO L93 Difference]: Finished difference Result 532 states and 1601 transitions. [2020-12-23 13:42:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:49,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:42:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:49,987 INFO L225 Difference]: With dead ends: 532 [2020-12-23 13:42:49,987 INFO L226 Difference]: Without dead ends: 412 [2020-12-23 13:42:49,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-23 13:42:50,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-12-23 13:42:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-23 13:42:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2020-12-23 13:42:50,004 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2020-12-23 13:42:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,004 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2020-12-23 13:42:50,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2020-12-23 13:42:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:42:50,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:50,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:50,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:42:50,006 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:50,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1949381931, now seen corresponding path program 1 times [2020-12-23 13:42:50,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:50,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537145530] [2020-12-23 13:42:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:50,048 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 13:42:50,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537145530] [2020-12-23 13:42:50,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:50,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:50,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714124888] [2020-12-23 13:42:50,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:50,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:50,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:50,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:50,050 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand 4 states. [2020-12-23 13:42:50,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:50,077 INFO L93 Difference]: Finished difference Result 526 states and 1530 transitions. [2020-12-23 13:42:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:42:50,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:42:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:50,080 INFO L225 Difference]: With dead ends: 526 [2020-12-23 13:42:50,081 INFO L226 Difference]: Without dead ends: 274 [2020-12-23 13:42:50,081 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 13:42:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-23 13:42:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-12-23 13:42:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-23 13:42:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-12-23 13:42:50,094 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2020-12-23 13:42:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,094 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-12-23 13:42:50,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-12-23 13:42:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:42:50,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:50,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:50,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:42:50,096 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:50,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2123867267, now seen corresponding path program 1 times [2020-12-23 13:42:50,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:50,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962103777] [2020-12-23 13:42:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:50,159 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 13:42:50,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962103777] [2020-12-23 13:42:50,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:50,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:42:50,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864189931] [2020-12-23 13:42:50,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:50,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:50,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:50,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:50,161 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-12-23 13:42:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:50,204 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-12-23 13:42:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:50,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 13:42:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:50,207 INFO L225 Difference]: With dead ends: 345 [2020-12-23 13:42:50,207 INFO L226 Difference]: Without dead ends: 252 [2020-12-23 13:42:50,207 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 13:42:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-23 13:42:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-12-23 13:42:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-23 13:42:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-12-23 13:42:50,217 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-12-23 13:42:50,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,217 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-12-23 13:42:50,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-12-23 13:42:50,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:42:50,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:50,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:50,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:42:50,219 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:50,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:50,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134941, now seen corresponding path program 1 times [2020-12-23 13:42:50,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:50,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041402678] [2020-12-23 13:42:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:50,276 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 13:42:50,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041402678] [2020-12-23 13:42:50,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:50,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:50,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003220279] [2020-12-23 13:42:50,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:50,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:50,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:50,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:50,279 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-12-23 13:42:50,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:50,346 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-12-23 13:42:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:50,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 13:42:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:50,349 INFO L225 Difference]: With dead ends: 278 [2020-12-23 13:42:50,349 INFO L226 Difference]: Without dead ends: 203 [2020-12-23 13:42:50,349 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 13:42:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-23 13:42:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-12-23 13:42:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-23 13:42:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-12-23 13:42:50,358 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-12-23 13:42:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,358 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-12-23 13:42:50,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-12-23 13:42:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:42:50,359 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:50,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:50,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:42:50,360 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:50,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628631, now seen corresponding path program 1 times [2020-12-23 13:42:50,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:50,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951732631] [2020-12-23 13:42:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:50,435 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 13:42:50,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951732631] [2020-12-23 13:42:50,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:50,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:50,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585440646] [2020-12-23 13:42:50,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:42:50,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:50,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:42:50,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:50,438 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-12-23 13:42:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:50,503 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-12-23 13:42:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:42:50,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 13:42:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:50,506 INFO L225 Difference]: With dead ends: 200 [2020-12-23 13:42:50,506 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 13:42:50,506 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 13:42:50,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 13:42:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-23 13:42:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-23 13:42:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-12-23 13:42:50,512 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-12-23 13:42:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,513 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-12-23 13:42:50,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:42:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-12-23 13:42:50,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:42:50,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:50,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:50,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:42:50,515 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:50,516 INFO L82 PathProgramCache]: Analyzing trace with hash 554738786, now seen corresponding path program 1 times [2020-12-23 13:42:50,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:50,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525408596] [2020-12-23 13:42:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:50,594 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 13:42:50,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525408596] [2020-12-23 13:42:50,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:50,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:42:50,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419392222] [2020-12-23 13:42:50,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:42:50,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:50,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:42:50,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:42:50,603 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 5 states. [2020-12-23 13:42:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:50,637 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-12-23 13:42:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:42:50,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 13:42:50,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:50,639 INFO L225 Difference]: With dead ends: 194 [2020-12-23 13:42:50,639 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 13:42:50,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:42:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 13:42:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-23 13:42:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 13:42:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-23 13:42:50,645 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-23 13:42:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,645 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-23 13:42:50,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:42:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-23 13:42:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:42:50,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:50,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:50,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:42:50,646 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:50,647 INFO L82 PathProgramCache]: Analyzing trace with hash -780782352, now seen corresponding path program 2 times [2020-12-23 13:42:50,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:50,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426808575] [2020-12-23 13:42:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:50,712 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 13:42:50,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426808575] [2020-12-23 13:42:50,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:50,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:42:50,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384524806] [2020-12-23 13:42:50,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:42:50,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:50,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:42:50,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:42:50,714 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-12-23 13:42:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:50,802 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-12-23 13:42:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:42:50,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 13:42:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:50,805 INFO L225 Difference]: With dead ends: 120 [2020-12-23 13:42:50,805 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 13:42:50,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:42:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 13:42:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-23 13:42:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 13:42:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-12-23 13:42:50,808 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-12-23 13:42:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,808 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-12-23 13:42:50,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:42:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-12-23 13:42:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 13:42:50,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:42:50,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:42:50,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 13:42:50,810 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:42:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:42:50,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1285342776, now seen corresponding path program 1 times [2020-12-23 13:42:50,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:42:50,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640727792] [2020-12-23 13:42:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:42:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:42:50,876 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 13:42:50,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640727792] [2020-12-23 13:42:50,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:42:50,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:42:50,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084441654] [2020-12-23 13:42:50,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:42:50,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:42:50,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:42:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:42:50,878 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-12-23 13:42:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:42:50,901 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-12-23 13:42:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:42:50,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-23 13:42:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:42:50,902 INFO L225 Difference]: With dead ends: 70 [2020-12-23 13:42:50,902 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:42:50,903 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 13:42:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:42:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:42:50,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:42:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:42:50,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-23 13:42:50,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:42:50,904 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:42:50,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:42:50,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:42:50,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:42:50,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 13:42:50,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:50 BasicIcfg [2020-12-23 13:42:50,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:42:50,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:42:50,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:42:50,909 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:42:50,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:43" (3/4) ... [2020-12-23 13:42:50,913 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:42:50,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:42:50,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:42:50,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:42:50,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-23 13:42:50,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-23 13:42:50,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:42:50,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:50,927 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:42:50,974 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe019_tso.oepc.i-witness.graphml [2020-12-23 13:42:50,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:42:50,976 INFO L168 Benchmark]: Toolchain (without parser) took 8732.55 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 125.1 MB in the beginning and 176.0 MB in the end (delta: -50.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:50,977 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 96.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:50,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.5 MB in the end (delta: 412.4 kB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:50,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 122.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:50,978 INFO L168 Benchmark]: Boogie Preprocessor took 64.84 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 121.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:50,979 INFO L168 Benchmark]: RCFGBuilder took 603.66 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 97.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:50,980 INFO L168 Benchmark]: TraceAbstraction took 7120.70 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 96.8 MB in the beginning and 178.6 MB in the end (delta: -81.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:42:50,980 INFO L168 Benchmark]: Witness Printer took 65.72 ms. Allocated memory is still 219.2 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:42:50,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 123.3 MB in the end (delta: 96.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 767.77 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.5 MB in the end (delta: 412.4 kB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 99.03 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 122.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.84 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 121.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 603.66 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 97.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7120.70 ms. Allocated memory was 151.0 MB in the beginning and 219.2 MB in the end (delta: 68.2 MB). Free memory was 96.8 MB in the beginning and 178.6 MB in the end (delta: -81.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 65.72 ms. Allocated memory is still 219.2 MB. Free memory was 178.6 MB in the beginning and 176.0 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 1172 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 97 PlacesBefore, 38 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2978 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 282 SDtfs, 351 SDslu, 423 SDs, 0 SdLazy, 235 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 308 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 10982 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...