/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/safe027_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:44:40,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:44:40,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:44:40,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:44:40,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:44:40,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:44:40,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:44:40,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:44:40,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:44:40,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:44:40,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:44:40,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:44:40,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:44:40,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:44:40,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:44:40,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:44:40,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:44:40,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:44:40,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:44:40,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:44:40,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:44:40,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:44:40,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:44:40,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:44:40,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:44:40,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:44:40,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:44:40,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:44:40,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:44:40,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:44:40,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:44:40,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:44:40,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:44:40,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:44:40,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:44:40,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:44:40,851 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 13:44:40,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:44:40,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:44:40,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:44:40,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:44:40,883 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:44:40,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:44:40,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:44:40,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:44:40,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:44:40,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:44:40,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:44:40,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:44:40,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:44:40,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:44:40,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:44:40,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:44:40,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:44:40,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:44:40,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:44:40,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:44:40,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:44:40,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:44:40,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:44:40,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:44:40,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:44:40,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:44:41,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:44:41,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:44:41,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:44:41,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:44:41,375 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:44:41,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2020-12-23 13:44:41,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f086174de/08fe1a551d754f698907f27bac3b5498/FLAGf10cf1fab [2020-12-23 13:44:42,260 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:44:42,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2020-12-23 13:44:42,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f086174de/08fe1a551d754f698907f27bac3b5498/FLAGf10cf1fab [2020-12-23 13:44:42,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f086174de/08fe1a551d754f698907f27bac3b5498 [2020-12-23 13:44:42,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:44:42,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:44:42,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:42,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:44:42,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:44:42,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:42" (1/1) ... [2020-12-23 13:44:42,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6b772a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:42, skipping insertion in model container [2020-12-23 13:44:42,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:42" (1/1) ... [2020-12-23 13:44:42,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:44:42,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:44:42,793 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/safe027_tso.opt.i[949,962] 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[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:43,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:43,042 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:44:43,058 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:43,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:43,215 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:44:43,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43 WrapperNode [2020-12-23 13:44:43,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:43,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:43,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:44:43,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:44:43,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:43,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:44:43,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:44:43,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:44:43,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (1/1) ... [2020-12-23 13:44:43,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:44:43,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:44:43,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:44:43,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:44:43,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (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 13:44:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:44:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:44:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:44:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:44:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:44:43,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:44:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:44:43,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:44:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:44:43,474 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:44:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-23 13:44:43,474 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-23 13:44:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:44:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:44:43,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:44:43,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:44:43,476 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 13:44:44,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:44:44,126 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:44:44,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:44 BoogieIcfgContainer [2020-12-23 13:44:44,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:44:44,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:44:44,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:44:44,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:44:44,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:44:42" (1/3) ... [2020-12-23 13:44:44,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570f0e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:44, skipping insertion in model container [2020-12-23 13:44:44,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:43" (2/3) ... [2020-12-23 13:44:44,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570f0e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:44, skipping insertion in model container [2020-12-23 13:44:44,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:44" (3/3) ... [2020-12-23 13:44:44,145 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2020-12-23 13:44:44,152 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:44:44,153 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:44:44,158 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:44:44,159 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:44:44,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,217 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,218 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,218 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,219 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,231 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,234 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,234 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,235 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,235 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,237 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,237 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,238 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,239 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,240 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,240 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,241 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,246 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,246 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,247 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,254 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,255 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,255 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,259 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,259 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,260 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,260 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:44,268 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:44:44,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 13:44:44,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:44:44,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:44:44,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:44:44,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:44:44,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:44:44,330 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:44:44,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:44:44,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:44:44,350 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:44:44,354 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-23 13:44:44,358 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-23 13:44:44,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-23 13:44:44,415 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-23 13:44:44,416 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:44:44,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-23 13:44:44,426 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-23 13:44:48,064 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-23 13:44:48,403 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-23 13:44:48,510 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-23 13:44:48,784 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-23 13:44:48,785 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-23 13:44:48,792 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-23 13:44:48,847 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-23 13:44:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-23 13:44:48,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:44:48,861 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:48,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:48,862 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-23 13:44:48,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:48,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078571442] [2020-12-23 13:44:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:49,235 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 13:44:49,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078571442] [2020-12-23 13:44:49,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:49,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:44:49,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745902866] [2020-12-23 13:44:49,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:49,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:49,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:49,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:49,269 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-23 13:44:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:49,370 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-23 13:44:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:49,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:44:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:49,399 INFO L225 Difference]: With dead ends: 832 [2020-12-23 13:44:49,399 INFO L226 Difference]: Without dead ends: 553 [2020-12-23 13:44:49,400 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 13:44:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-23 13:44:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-23 13:44:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-23 13:44:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-23 13:44:49,512 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-23 13:44:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:49,513 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-23 13:44:49,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-23 13:44:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:44:49,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:49,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:49,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:44:49,517 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:49,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-23 13:44:49,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:49,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590323983] [2020-12-23 13:44:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:49,673 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 13:44:49,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590323983] [2020-12-23 13:44:49,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:49,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:49,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053915798] [2020-12-23 13:44:49,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:49,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:49,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:49,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:49,678 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2020-12-23 13:44:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:49,703 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2020-12-23 13:44:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:49,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:44:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:49,711 INFO L225 Difference]: With dead ends: 526 [2020-12-23 13:44:49,711 INFO L226 Difference]: Without dead ends: 526 [2020-12-23 13:44:49,712 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 13:44:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-23 13:44:49,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-23 13:44:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-23 13:44:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-23 13:44:49,742 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2020-12-23 13:44:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:49,742 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-23 13:44:49,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-23 13:44:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:44:49,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:49,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:49,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:44:49,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:49,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:49,747 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-23 13:44:49,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:49,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307122833] [2020-12-23 13:44:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:49,848 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 13:44:49,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307122833] [2020-12-23 13:44:49,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:49,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:49,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492342152] [2020-12-23 13:44:49,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:49,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:49,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:49,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:49,851 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-23 13:44:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:49,893 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-12-23 13:44:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:49,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:44:49,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:49,898 INFO L225 Difference]: With dead ends: 682 [2020-12-23 13:44:49,898 INFO L226 Difference]: Without dead ends: 394 [2020-12-23 13:44:49,899 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 13:44:49,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-23 13:44:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-23 13:44:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-23 13:44:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-12-23 13:44:49,916 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-12-23 13:44:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:49,916 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-12-23 13:44:49,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-12-23 13:44:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:44:49,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:49,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:49,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:44:49,923 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:49,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-23 13:44:49,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:49,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599012612] [2020-12-23 13:44:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:50,053 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 13:44:50,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599012612] [2020-12-23 13:44:50,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:50,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:50,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027149100] [2020-12-23 13:44:50,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:50,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:50,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:50,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:50,056 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 4 states. [2020-12-23 13:44:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:50,075 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2020-12-23 13:44:50,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:50,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 13:44:50,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:50,079 INFO L225 Difference]: With dead ends: 376 [2020-12-23 13:44:50,080 INFO L226 Difference]: Without dead ends: 376 [2020-12-23 13:44:50,080 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 13:44:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-23 13:44:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-23 13:44:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-23 13:44:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-12-23 13:44:50,096 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-12-23 13:44:50,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:50,096 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-12-23 13:44:50,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-12-23 13:44:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:44:50,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:50,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:50,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:44:50,098 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:50,099 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-23 13:44:50,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:50,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451705497] [2020-12-23 13:44:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:50,176 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 13:44:50,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451705497] [2020-12-23 13:44:50,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:50,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:50,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285750563] [2020-12-23 13:44:50,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:50,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:50,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:50,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:50,179 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 5 states. [2020-12-23 13:44:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:50,219 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-12-23 13:44:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:50,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:44:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:50,222 INFO L225 Difference]: With dead ends: 466 [2020-12-23 13:44:50,222 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 13:44:50,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:44:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 13:44:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-23 13:44:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-23 13:44:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-23 13:44:50,232 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-23 13:44:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:50,232 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-23 13:44:50,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-23 13:44:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:44:50,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:50,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:50,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:44:50,234 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:50,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-23 13:44:50,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:50,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822000739] [2020-12-23 13:44:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:50,371 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 13:44:50,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822000739] [2020-12-23 13:44:50,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:50,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:50,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719059945] [2020-12-23 13:44:50,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:50,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:50,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:50,375 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-23 13:44:50,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:50,422 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-23 13:44:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:50,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 13:44:50,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:50,425 INFO L225 Difference]: With dead ends: 287 [2020-12-23 13:44:50,426 INFO L226 Difference]: Without dead ends: 206 [2020-12-23 13:44:50,426 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 13:44:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-23 13:44:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-23 13:44:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-23 13:44:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-23 13:44:50,434 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-23 13:44:50,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:50,435 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-23 13:44:50,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-23 13:44:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:44:50,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:50,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:50,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:44:50,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-23 13:44:50,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:50,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224265948] [2020-12-23 13:44:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:50,539 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 13:44:50,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224265948] [2020-12-23 13:44:50,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:50,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:50,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754708821] [2020-12-23 13:44:50,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:50,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:50,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:50,544 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-23 13:44:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:50,601 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-23 13:44:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:44:50,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 13:44:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:50,604 INFO L225 Difference]: With dead ends: 227 [2020-12-23 13:44:50,604 INFO L226 Difference]: Without dead ends: 162 [2020-12-23 13:44:50,604 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 13:44:50,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-23 13:44:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-23 13:44:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-23 13:44:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-23 13:44:50,611 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-23 13:44:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:50,611 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-23 13:44:50,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-23 13:44:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:44:50,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:50,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:50,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:44:50,615 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:50,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:50,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-23 13:44:50,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:50,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625105229] [2020-12-23 13:44:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:50,750 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 13:44:50,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625105229] [2020-12-23 13:44:50,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:50,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:44:50,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646629601] [2020-12-23 13:44:50,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:44:50,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:50,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:44:50,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:44:50,754 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-23 13:44:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:50,818 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-23 13:44:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:44:50,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 13:44:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:50,820 INFO L225 Difference]: With dead ends: 158 [2020-12-23 13:44:50,820 INFO L226 Difference]: Without dead ends: 125 [2020-12-23 13:44:50,821 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 13:44:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-23 13:44:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-23 13:44:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 13:44:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-23 13:44:50,827 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-23 13:44:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:50,827 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-23 13:44:50,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:44:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-23 13:44:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:44:50,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:50,829 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 13:44:50,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:44:50,829 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:50,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:50,830 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-23 13:44:50,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:50,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440758424] [2020-12-23 13:44:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:50,913 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 13:44:50,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440758424] [2020-12-23 13:44:50,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:50,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:50,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992501083] [2020-12-23 13:44:50,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:50,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:50,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:50,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:50,917 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-23 13:44:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:50,936 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-23 13:44:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:50,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-23 13:44:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:50,938 INFO L225 Difference]: With dead ends: 166 [2020-12-23 13:44:50,938 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 13:44:50,938 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 13:44:50,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 13:44:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-23 13:44:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-23 13:44:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-23 13:44:50,943 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-23 13:44:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:50,943 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-23 13:44:50,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-23 13:44:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:44:50,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:50,944 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 13:44:50,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:44:50,945 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:50,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:50,945 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-23 13:44:50,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:50,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818224165] [2020-12-23 13:44:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:51,010 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 13:44:51,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818224165] [2020-12-23 13:44:51,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:51,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:51,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623767842] [2020-12-23 13:44:51,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:51,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:51,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:51,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:51,013 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-23 13:44:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:51,030 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-23 13:44:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:51,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-23 13:44:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:51,033 INFO L225 Difference]: With dead ends: 142 [2020-12-23 13:44:51,034 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 13:44:51,034 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 13:44:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 13:44:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-23 13:44:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 13:44:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-23 13:44:51,037 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-23 13:44:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:51,038 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-23 13:44:51,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-23 13:44:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:44:51,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:51,039 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 13:44:51,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:44:51,039 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-23 13:44:51,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:51,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370425027] [2020-12-23 13:44:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:51,097 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 13:44:51,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370425027] [2020-12-23 13:44:51,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:51,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:44:51,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306231202] [2020-12-23 13:44:51,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 13:44:51,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:51,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 13:44:51,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:44:51,100 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-23 13:44:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:51,141 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-23 13:44:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:44:51,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-23 13:44:51,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:51,142 INFO L225 Difference]: With dead ends: 81 [2020-12-23 13:44:51,142 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:44:51,142 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 13:44:51,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:44:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:44:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:44:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:44:51,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-23 13:44:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:51,143 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:44:51,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 13:44:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:44:51,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:44:51,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:44:51,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:44:51 BasicIcfg [2020-12-23 13:44:51,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:44:51,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:44:51,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:44:51,150 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:44:51,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:44" (3/4) ... [2020-12-23 13:44:51,154 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:44:51,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:44:51,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:44:51,163 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:44:51,164 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-23 13:44:51,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-23 13:44:51,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:44:51,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:51,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:51,216 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe027_tso.opt.i-witness.graphml [2020-12-23 13:44:51,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:44:51,218 INFO L168 Benchmark]: Toolchain (without parser) took 8684.79 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 125.6 MB in the beginning and 101.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 97.7 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:51,219 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 152.0 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:44:51,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.10 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 126.0 MB in the end (delta: -552.9 kB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:51,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.10 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 123.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:51,221 INFO L168 Benchmark]: Boogie Preprocessor took 63.73 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:51,221 INFO L168 Benchmark]: RCFGBuilder took 760.27 ms. Allocated memory is still 152.0 MB. Free memory was 122.3 MB in the beginning and 98.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:51,222 INFO L168 Benchmark]: TraceAbstraction took 7013.01 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 98.2 MB in the beginning and 104.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:51,223 INFO L168 Benchmark]: Witness Printer took 67.53 ms. Allocated memory is still 225.4 MB. Free memory was 104.7 MB in the beginning and 101.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:51,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 152.0 MB. Free memory was 124.5 MB in the beginning and 124.3 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 681.10 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 126.0 MB in the end (delta: -552.9 kB). Peak memory consumption was 28.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 87.10 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 123.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.73 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 760.27 ms. Allocated memory is still 152.0 MB. Free memory was 122.3 MB in the beginning and 98.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7013.01 ms. Allocated memory was 152.0 MB in the beginning and 225.4 MB in the end (delta: 73.4 MB). Free memory was 98.2 MB in the beginning and 104.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. * Witness Printer took 67.53 ms. Allocated memory is still 225.4 MB. Free memory was 104.7 MB in the beginning and 101.6 MB in the end (delta: 3.1 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 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 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, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 236 SDtfs, 285 SDslu, 340 SDs, 0 SdLazy, 180 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...